“electric motor bike kit -bicycles with electric motors”

Hi Kim! Great question… I’ve heard some ebike companies and shops guestimate that 180 lbs is a good cutoff when jumping from 350 to 500 or 750 watts (750 is the highest allowable in the US). I’m sure you could get away with a 350 just fine, especially if you pedal along a little to help it get started each time and ride mostly on flats. Here’s a video interview I did with an individual of similar weight who was riding a 350 watt motor for over two years and using a throttle with higher powered 48 volt batteries… you can hear some grinding when the bike starts and I believe this is based on accelerated wear and tear. I hope this helps and welcome you to share what you choose and how it works down the line. I personally appreciate the compact size and efficiency (and lower price) of 350 watt motors but most people would recommend that you aim for 500+ watt in this case.

Lastly, regarding the spot welder. I actually prefer to use the kind like you said, with the two arms that lift up and provide equal pressure at each weld. The kind with two long welding cables like this welder has both options which is nice, especially for if you need to reach to the middle of a pack to make a repair or if you missed a weld. I mostly use the short rigid arms though and just weld one row at a time before adding more cells – that way I can reach all the cells with the short arms.

trying to decide on an e-bike for a 15 mile, hilly commute. I’m a heavier rider. tested haibike with mid drive (loved it), and specialized turbo S (also loved it). It seems the mid drive does better on hills, which kill me. there also seems to be a big difference in price on the 20mph systems and the 28mph systems. for a heavier rider, is it worth the extra cash for the 28mph system?

China has experienced an explosive growth of sales of non-assisted e-bikes including scooter type, with annual sales jumping from 56,000 units in 1998 to over 21 million in 2008,[69] and reaching an estimated fleet of 120 million e-bikes in early 2010.[2][70] This boom was triggered by Chinese local governments’ efforts to restrict motorcycles in city centers to avoid traffic disruption and accidents. By late 2009 motorcycles are banned or restricted in over ninety major Chinese cities.[69] Users began replacing traditional bicycles and motorcycles and e-bike became an alternative to commuting by car.[2] Nevertheless, road safety concerns continue as around 2,500 e-bike related deaths were registered in 2007.[70] By late 2009 ten cities had also banned or imposed restrictions on e-bikes on the same grounds as motorcycles. Among these cities were Guangzhou, Shenzhen, Changsha, Foshan, Changzhou, and Dongguang.[69][70]

Pedego Electric Bikes toll-free at (888) 870-9754 from 8 a.m. to 5 p.m. PT, email [email protected], or online at www.pedegoelectricbikes.com and click on “Voluntary Battery Recall” for more information.

Karl at electric-fatbike.com is the Bafang mid drive guru, and even though the BBSHD only maxes out at a slightly higher amperage (30A vs the 25A on the smaller BBS02), the extra copper mass in the BBSHD stator means that at 52V X 30A = 1560W of power, the BBSHD barely gets warm, because it is larger and also sheds heat better. Even if used at the same watts as the BBS02, the stator of the BBSHD is 66% wider, so it will definitely make more torque.

Regarding you question, if I understand you correctly, it seems that your 18650 lithium battery will be smaller than the old NiCad battery, so you have extra room in the battery box that needs to be filled, correct? My recommendation is to use some type of fairly rigid foam to fill the space. It adds almost no weight and it also helps cushion the battery pack.

With a budget in mind, here is a 36V charger (output 42V, exactly what a 36V li-ion pack needs) that I have used and found to be a good budget charger. It’s not super fast, at only 2A, but for just $20 shipped, it’s a great deal. You might have to wait about 3 weeks for it arrive from China though. http://www.aliexpress.com/item/100-240VAC-42VDC-2-0A-Lithium-LiPo-Battery-Charger-E-Bike-charger-suitable-for-10S-36V/559929087.html

A solid all-around mid-drive electric bike kit with shift sensing, pedal assist and throttle override offering 500 watts of nominal power output. Two battery size options, available in downtube or rear rack styles, optional Race Face performance……

Some individuals have lost considerable amounts of weight by using an electric bike.[60] By making the biking terrain less of an issue, people who wouldn’t otherwise consider biking can use the electric assistance when needed and otherwise pedal as they are able.[61] This means people of lower fitness levels or who haven’t cycled in many years can start enjoying the many health benefits E-bikes have to offer. [1]

Today, China is the world’s leading producer of e-bikes. According to the data of the China Bicycle Association, a government-chartered industry group, in 2004 China’s manufacturers sold 7.5 million e-bikes nationwide, which was almost twice the year 2003 sales;[11] domestic sales reached 10 million in 2005, and 16 to 18 million in 2006.[10]

A very affordable 13S BMS that I like is this 30A version, though https://en.wikipedia.org/wiki/Electric_bikes can take a few weeks or even a month to arrive since it’s coming all the way from China. http://www.aliexpress.com/item/13-lithium-battery-protection-board-48v-lithium-battery-BMS-30A-continuous-60A-peak-discharge/1741121963.html

Court, great site you have here. I will tell you want i think i want but realize i don’t really know what i am talking about: i am looking for the best bike i can get. i want speed, endurance, great on hills, smooth ride and easy gear change, light weight (but not if it is in exchange for a lesser battery), max battery (48v and 17/18ah, and max watts) and anything else you can think of. i am a little confused on the different systems, but want the best of all worlds (of course) but realize that there will be compramise. maybe you can tell me the best balance of all that i am looking for as i am not price sensitive. What do you think of the Stromer ST2? any other bikes i should look at? c

Be warned: some less-than-honest vendors try to pass off nickel plated steel for the pure stuff. They often get away with it because it’s nearly impossible to distinguish between to the two with the naked eye. I wrote a whole article on some methods I developed for testing nickel strip to make sure you get what you paid for. Check it out here.

Electric Bikes Are Now Legal on Pennsylvania Roadways! Breaking News… According to the Bicycle Access Council of PA in their November 2014 News and Digest, Electric-Assist bicycles are now legal on Pennsylvania roadways as part of Act 154. “Electric-Assist bicycles are now legal on Pennsylvania roadways as part of Act 154. In a convoluted way since first introduced in 2010, a last minute amendment was introduced by Representative Kevin Schreiber (D-95) with…

A 48 volt 20-Ah pack  contains 960 watt hours and once you get close to 1000 watt hours you are getting serious commuting range which most e-bike manufacturers promise but do not deliver…think 30 miles.

Hi Om, most electric bike kits that I’ve reviewed don’t offer regeneration and those that do are incredibly inefficient (like ~20%) so you’re losing much more energy than you capture. It’s a neat feature for helping you slow down when descending big hills and it creates a nice feeling to think that you’re getting a charge but I would not set out to generate electricity by pedaling unless you want to simulate hills and use your bicycle for rigorous exercise. If that is your interest then check out the BionX kits which all offer regen, you can even buy them preinstalled on bikes from OHM and others.

“power assist bike kit +noblift battery”

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Thanks for your reply. I am 190 lb. and 6 feet. I want to do mostly road work with some hills. I also want to do gravel trails made from old rail lines and so not really “off road” but not asphalt either. I love speed and acceleration and the ability to go far (even have a second battery on the rack to change out if needed? ). I am not a long time experienced bike guy and don’t like the totally bent over road bike ride. But can go from a somewhat lean forward and exercise ride to maybe putting on “after market” handle bars that allow for a more upright cruise ride as an option with my wife. Does this help? Also looking for an electric recumbent for my wife. c

The nickel is surprisingly soft, which means you can use an ordinary pair of scissors to cut it. Try not to bend it too much though, as you want it to remain as flat as possible. If you do bend the corners with the scissors, you can easily bend them back down with your finger.

These guys (Applied Future Technologies) are in Australia, and although they use the same motor and geared reduction as Cyclone, the rest of the kit parts are heavy duty and this fixes many of the complaints from Cyclone users. The distinctive added fins help the Headway motor shed heat much faster.

Not all e-bikes take the form of conventional push-bikes with an incorporated motor, such as the Cytronex bicycles which use a small battery disguised as a water bottle.[45][46] Some are designed to take the appearance of low capacity motorcycles, but smaller in size and consisting of an electric motor rather than a petrol engine. For example, the Sakura e-bike incorporates a 200 W motor found on standard e-bikes, but also includes plastic cladding, front and rear lights, and a speedometer. It is styled as a modern moped, and is often mistaken for one.[citation needed]

Cool! Glad I helped a little, it’s a fun journey creating something custom. I love doing the research, drawing designs and sharing ideas. If you do create a custom bike be sure to post some pictures and updates in the forum! I’m sure other people would love to see how it all turns out if you’re open to sharing 😀

Electric Bike Technologies has been delivering the best experience in electric bike kit conversion since the company was founded in 2008. Driven by a respected founder and a team of dedicated electric bike enthusiasts, the E-BikeKit™ electric bike conversion systems have been sold worldwide to thousands of electric bike riders and fostered partnerships with some of the best brands in the bicycle industry. The company has been featured on NBC’s Good Morning America and the E-BikeKit system is the only electric bike kit system distributed by J&B Importers, the largest bicycle distributor in the United States.

36v 10Ah Bottle Type Battery. Rated capacity: 10Ah. 36v 14Ah Rear Rack Type Battery. Rated capacity: 14Ah. 48V 14Ah Rear Rack Type Battery. Recommended to be used with 36V 250W electric bicycle motor.

Hi Om, most electric bike kits that I’ve reviewed don’t offer regeneration and those that do are incredibly inefficient (like ~20%) so you’re losing much more energy than you capture. It’s a neat feature for helping you slow down when descending big hills and it creates a nice feeling to think that you’re getting a charge but I would not set out to generate electricity by pedaling unless you want to simulate hills and use your bicycle for rigorous exercise. If that is your interest then check out the BionX kits which all offer regen, you can even buy them preinstalled on bikes from OHM and others.

Lead-acid electric bike batteries are cheap and easy to recycle. However, they are sensitive to bad treatment, and they don’t last very long. They are not a good choice if you’re serious about actually using your bike to commute.

at an extremely high efficiency (up to around 80%), doing more with less wattage, and thus not heating up too quickly while giving plenty of torque. In fact, in our testing of the new drive we’ve found it to be on par with a mid-drive motor system in terms of giving consistent torque on extremely steep hills. Other benefits of the Xion drive include a sophisticated control panel, regenerative brake assist, a quick release rear hub, and one of the most smooth performing torque sensors on the market.

I have seen as much as 8000 watts going through a traditional derailleur gear chain (see astro ebike story) with little problems as long as shifting is done with care….but that is with quality shimano components and chain.

As the e-bike concept grows in global aceptance, the electric bike conversion kit makes more sense for a variety of reasons. The hard-core bicycle enthusianst will appreciate the flexability of upgrading their favorite ride with an e-bike kit, while e-bike neophyte can experience personal electric transportation for a relatively modest up front outlay.

I`m trying to figure out a system that offer the less drag possible when pedaling ,but can assist me if the dogs chase me or strange person in the road appears. I don` t mind pedaling heavy weights 250 all include ,what really bother me is the drag .Can you point me in the less drag direction ,and assist power.Thank you in advance.

Although the motor is the same, every part of this drive is very strong and uses the highest quality components, including a 25mm wide primary reduction belt, instead of the GNG’s 15mm wide, and…a #219 kart chain for the secondary, which is rated for over 20-HP (15,000W). By moving the motor-freewheel from the right side, over to the large primary driven pulley on the left, the http://electrichuntingbikes.com has been improved to 33:1 (compared to the original GNG reduction of only 21:1).

Small hard-cased A123 cells (about the size of a “C” battery) have been salvaged out of power drill packs, car battery packs etc, and have made it into the hands of e-bike DIYers who solder them together in series and in parallel to construct a pack big enough and powerful enough to power an e-bike.

Next, plan out your cell configuration on your computer or even with a pencil and paper. This will help ensure you are laying out your pack correctly and show you the final dimensions of the pack. In my top-down drawing below I’ve designated the positive end of the cells in red and the negative end of the cells in white.

You can buy LiFePO4 straight from China from Ping Battery. These batteries are a little bulky, but are safe, and will last over 1000 charges. You can also buy ready made Lithium Iron Phoshate (LiFePO4) or Lithium Polymer (LiPo) packs from BMS battery.

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I’ve checked with a few people that have bought 220V european welders and used them in the US, and they all say they work fine (besides one that broke a few months later from an unrelated issue). As far as I can tell, regardless of whether its half or full phase, the transformer inside still sees the approximately 220V it’s looking for. Have you tested yours on 220V yet?

Note that in the article it says that LiFePo is the most commonly used chemistry. I think that depends on where you are looking. I suspect that LiNiCoMn or the older LiMn is actually most common in terms of total unit cells because they’re the cheapest and get used in the low end E-Bike market in China.

eBay determines trending price through a machine learned model of the product’s sale prices within the last 90 days. “New” refers to a brand-new, unused, unopened, undamaged item, and “Used” refers to an item that has been used previously.

The Panasonic 18650pf is a good cell, that’s the one I used here. I also like the Samsung 26F, though it’s a fairly low power cell, and the Samsung 29E which is a bit higher power cell. The Samsung 30Q is a fairly new cell that has good specifications but doesn’t have as long a life – everything is a trade-off.

Get around in comfort and style with everyday riders from ProdecoTech. Whether you’re commuting to work or riding around town, we have an eBike for you. ProdecoTech American electric bikes can help you save money on gas, save time with your commute and arrive to your destination without breaking a sweat.

If you want to go 50mph and have a 500 or 1,000-watt monster motor on your electric bike you’ll need big expensive, heavy batteries, and you might as well buy a motor scooter or motorcycle. If you wan…

Hi Lalith, cool name you have! If you are buying a high volume of electric bike motors and batteries, then you could probably buy direct from China and maybe use a website like Alibaba. However, if you need a small or medium number, maybe you could research a company like Clean Republic. I reviewed their affordable Hill Topper kit a while back and thought it was good. If you are buying for Africa, it might be easiest to source parts in Africa or find a wholesaler in China that can ship there vs. going from China to the US and then Africa. I hope this helps you! Be careful if you are planning to buy and then fly with products like this because high capacity Lithium-ion batteries are not usually allowed.

Great article! Have ordered everything BUT i have a big problem with the spotwelder. Most homes in europe are limited to 10A and this spotwelder alone drags 15A just to powerupp!!!! I can even start it without blowing both fuses! And when welding it wants 50A-800A which you need a an actual POWERPLANT for!

A big drawback to hub motors is that they position weight further out towards the end of the bike (either the front or back) which reduces balance. This can play a role when jumping a bike or taking it off road. Additionally motor weight is built into the wheel which increases unsprung weight, that is weight that cannot be “sprung” as a part of the main frame. This can be a tricky concept so I’ve made a short video to help clarify. In short, suspension can perform better if the elements it is suspending are lighter because they do not have to deal with as much inertia.

Hi Miran! The Pulsar 250 watt hub motor sounds decent, for your short commute it could work fine and in my opinion front mounted hub motors are alright for basic city riding. They can change the steering dynamic and handling a bit but with a small motor like the one you shared I don’t think it would be a big deal. I really like the Bafang mid-drive but that will be very fast, powerful and possibly illegal where you live. Also, it might be difficult to install compared to the front kit. Here is one I reviewed that might be similar to your Pulsar: https://electricbikereview.com/clean-republic/hill-topper/

The benefit of an integrated controller is easy troubleshooting, while the drawback is inability to service a bad controller as well as a lower heat tolerance for the motor as a whole. The good news is that after many years of development, the TDCM hub is extremely reliable—we can attest to that!

I’ve reviewed all of the bikes you mentioned including those from Pedego (which also makes one of the Ford Ebikes), Specialized and Flux. I disagree with your local bike shop about Pedego being low quality… some of the models are a bit basic and “classic” in terms of design but the company provides good support and honors their warranty, they even did a voluntary battery recall a year or so back which was proactive and upstanding. The downside there is going to be higher price and finding a local dealer.

Hi, Court Rye! Thank you for your response . As I supposedly said, I do cca.20 km per day. 2000 – 3000 per year. The main road is straight, as well as highs. Just for them I need help of the engine. I send you pictures of the engine that are offered to me . They said that discourage hub motor ( in the first wheel ) , as well as the Mid – Bafang , because often corrupts !? So, what do you mean? Thanks and best regards, Miran

Come take a test ride on the @stromerbike ST1X in our shop! This bike syncs with your phone to give you full control of your ride! #stromer #stromerbike #stromersmile #electricbike #electricbicycle #pedelec #speedpedelec #nycewheels #swissbike 24.02.2018 – 01:37

“lithium battery bike +bike batteries”

It’s always hard to say exactly how much AH’s someone will need because every case is different. With that powerful motor sucking lots of juice and big hills though, you are going to want a minimum of 48V20AH. http://electricbikeframes.com I were you I would try to go even higher, but it may be even better to simply have two batteries at that point. It’s annoying to swap them, but if you ever had a problem with a 48V30AH battery that destroyed the pack, it would be a big investment straight to the garbage. A problem in one of your smaller packs would mean you still had the other. It’s not likely to happen, but it’s something to think about.

A letter from Casey Evans to Electric Bike Technologies, makers of the E-BikeKit™ electric bike conversion kit system. This one of kind adaptive electric stroller was designed by students from California State University-Sacramento using two 500w direct-drive hub motors controlled by a single E-BikeKit system. Thank you for enabling me to take my daughter hiking! My name is Casey Evans and my daughter, Montel, was born with a very rare…

Hi Micah, thank you for your advice. I am not going to touch that battery. I know this may be a lot to ask, but would you build me a battery for my velomini 1 ? It doesn’t have to be the one that fits in the frame, I could put it in a bag and hang it on the handlebars or something. If more convenient you can email me directly at dlimjr at yahoo. My sincere thanks and may you and your family have a happy holiday.. Don, San Francisco

It’s hard to say for sure without seeing your work. I imagine that either you have a bad connection somewhere, or else you have some cells that are weakened and drop their voltage too low when a load is applied. I didn’t quite understand from your message: did you rebuild the battery using the cells in your Frog battery, or did you start with new ones? Old or damaged cells could cause the problem you are experiencing.

After years development, we have built up a good reputation for high-quality lithium ion battery packs and electric bikes battery at very attractive prices. Our Quality system satisfies the international standards of ISO 9001:2008.

One other drive system that sort of splits the difference between mid drive and hub drive is the shaft drive. It works like an automobile, positioning the motor more towards the center of the bike while driving the rear wheel with a shaft. These are not very common today, perhaps because they require extremely customized frames that are not symmetrical. While a rear wheel drive truck often has a drive shaft extending from the motor (under the hood) back to the rear wheels that is located centrally under the body, a bicycle has to use one of the chain stay arms to support the shaft. This makes it look a bit awkward and perhaps difficult to service as well.

Frederic bought a 2017 M-850 Addmotor MOTAN Electric Bicycles Sport Black Super Discount For Sale 500W 48V Bafang Rear Hub Motor 10.4AH Samsung Cell Battery Pack Electric Bike For Big Guys With Fork Suspension And Spring Shock Absorber

Maybe another way forward is to buy a pannier mounted supplementary battery pack (a proper one with a BMS) and to install it in parallel with the main one. The question then becomes whether to connect between the sprung terminals that go to the motor controller (which I believe to be the best thing to do) or into the little charging port jack. I presume that the charging port is connected to the charging side of the BMS and I don’t know how much current that port would take or whether it’s even a good plan to charge and discharge the main battery at the same time. I see significant potential for a high current through that small jack once I discharge via the main battery and a voltage difference exists between the supplementary batter and the main battery.

thanks for detail explanation , I was enjoj reading it. Well, I am interesting why did you pick this tipe of battery, I was thinking to use LiFePO4, I know there are usualy 3.2V it is less than 3.6V like here? Also, can you explain me how to calculate max current of battery, it says that you get 8.7Ah, but how much Ampers and what is the power of battery, how many Watts (P = U * I)? Furthermore, without welding, can I do on contact connection, like for example are battery in remote control?

Hi Frank! I used to live in San Francisco and love riding through all of those spots. Hope the city treats you well, ride safe out there. Regarding your “ideal bike” I suggest copying and pasting this question into the Help Choosing Ebikes Forum where people can share their opinions. I’d love to help but am currently traveling and trying to post new reviews with the extra time. The first thing that comes to mind is the Optibike Pioneer City which is a step-thru and uses a powerful mid-drive motor that will be excellent for climbing hills. There’s no twist throttle on this bike but the assist is very satisfying and more efficient overall. Hope this helps!

“electric bike wheel kit |batteries for electric bicycles”

Suitable for electric bicycle & scooter, mechanical or electric forklift. Speed governor :Thin green (Speed handlebar Signal input) /Thin black (Negtive Power) /thin red(5V Positive Power). Ignition S…

The UpCycle Eco-Charger is a Powerful Bicycle Generator that Utilizes an E-BikeKit™ Hub Motor and Empowers You to Generate Your Own Electricity!   The UpCycle Eco-Charger was created by Adam Boesel, the founder of The Green Microgym Say goodbye to worrying about environmental disasters and hello to making the world a better place. The UpCycle Eco-Charger is the most efficient, reliable, and powerful bicycle generator ever. Over the past two…

Loved your comparisons as I’ve been thinking about an e-bike. I ride rurally with gravel roads and lots of long hills, some up to 3 miles and some steep. The plan was to take my cross bike and install a kit but not sure what brands are out and what type would work for my setup especially after watching your hill video. The other issue is durability and dealing with gravel dust. I’d hate to wreck and break something and would gravel dust ruin internal parts? Thanks!

craig it should not damage your controller. When you connect two batteries together in parallel it will actually extend the life of both batteries because you are not taking as much of a toll on them when discharging and hopefully not running them down as low.

I finally made it happen on BMS #3 (the unfortunate thing about AliExpress is that every dumb mistake that kills a part is another month added to the project) and the battery seems to work great, though it only has a couple miles so far.

The nickel is surprisingly soft, which means you can use an ordinary pair of scissors to cut it. Try not to bend it too much though, as you want it to remain as flat as possible. If you do bend the corners with the scissors, you can easily bend them back down with your finger.

Next comes the heat shrink tube. Large diameter heat shrink tube is hard to find, and I got lucky with a big score of different sizes from a Chinese vendor before his supply dried up. Your best bet is to check sites like eBay for short lengths of heat shrink in the size you need.

Great article. As the average ebike shopper does a lot of product research, this explains really well the differences and benefits of the three major drive set ups..none are perfect in all situations. I need all three in my garage. Direct drive rear hub for my high speed 30 mph+ ebike. No gears to melt down. Mid drive for my mountain goat super climber and my real favorite and most used, the internally geared rear hub (not a big fan of front) for everyday riding. The free wheel aspect while coasting or in torque sensing pedal assist makes for a much more enjoyable ride. Keep the review pedal to the metal Court!

very steep hills. The only two drawbacks of a geared motor is a higher possibility of wear due to more moving parts, and a higher noise level than a direct drive motor. But we believe the benefits far outweigh the drawbacks and make the BH Neo bikes a highly compelling option.

If you have time, batteries for electric scooters canada be curious to hear about the pros and cons of this kind of approach. Is the main drawback simply the cumulative size of the plastic housing? Or is there some other limitation to this kind of hardware that makes it unsuitable?

Wow. Thanks for the info. Do you mind if I ask more? How fast does the ST2 go? Does focus thron impulse (FTI) have the same torque as the ST2. The video mad e the ST2 look very good. what do I get from FTI that I don’t get from ST2 other than suspension? Is there a price delta? I have not looked at the other bikes you mention. Can you web site to a comparison of them all? I really want to buy before summer. Thank you so much for the info. craig

My daily driver ebike has 8 cells paralled (14s8p) and it’s been working great for a long time. You can certainly make two 13s4p packs and parallel them after the fact, but don’t be afraid of making a single pack. As long as you use good quality cells, the risk of a parallel group dying is incredibly small.

We strive to provide the best price available on BatteriesPlus.com and in our stores. Store pricing may vary from the price advertised on BatteriesPlus.com. Fees may apply for recycling, environmental disposal, and/or labor/installation.

Original Equipment Manufacturer Parts (OEM) have been designed by the manufacturer to be compatible with your scooter, folding bike or electric bike. That holds true for parts made by Brompton, Tern. Bulls, Stromer, Dahon  and many other brands. Find original replacement parts for the BionX electric bicycle conversion kit, like batteries, chargers, consoles, motors and wiring. NYCeWheels sells parts for Brompton Folding Bicycles whether you need to replace a part or just want to stock up with a spare, just in case. NYCeWheels even sells some hard to find replacement parts and accessories, like those for the eBike that is no longer in production.

I’m sorry but I’m not certain. Here in Israel we are on 50hz so I haven’t tried that model on 60hz. I do however have some friends in the US that have that model on 60hz. They have been happy with it, but I haven’t used it myself so I can’t say how it compares to my experience.

thanks for detail explanation , I was enjoj reading it. Well, I am interesting why did you pick this tipe of battery, I was thinking to use LiFePO4, I know there are usualy 3.2V it is less than 3.6V like here? Also, can you explain me how to calculate max current of battery, it says that you get 8.7Ah, but how much Ampers and what is the power of battery, how many Watts (P = U * I)? Furthermore, without welding, can I do on contact connection, like for example are battery in remote control?

Glad to help! It’s an interesting time for ebikes because some states and cities place restrictions but the national law is < 20 mph unassisted and < 750 watt motor = bicycle. I've been to towns where citizens have challenged the local rules and won... and the rules are rarely enforced for people who are riding responsibly. If you were concerned about legality in the event of an accident it might be worth looking into bicycle insurance. You'll be 3 times faster on your kick scooter! Our high quality push scooters will keep you comfortable and safe while scooting with your kids or on the way to work. You'll smile every time you get on. Our selection of adult kick scooters have... learn more For: electric scooter or electric bicycle. Lot Contains: Electric Bike 3 Wires Ignition Switch Lock w 2 Keys. Left & Right Throttles. Left & Right Brake Levers. YIYUN 24 Volt 500 Watt Controller (Mode... I am looking to purchase my first electric bike. I have test ridden many and narrowed my favorites to the eMotion City Wave and the Pedego City Commuter, with 28″ wheels. I don’t anticipate lengthy trips – likely up to 30-40 miles tops, however we live in the hills of NH, so I would be using pedal assist and/or throttle for the tougher climbs. While I love the City Wave ride, I worry a bit about the 350W vs. the possible 500W on the Pedego. I am 5’8″ and weigh 138 lbs. Your thoughts? The second big change is that the motor now runs at 48V, making the motor both accelerate and regenerate much more efficiently and powerfully. Finally, the fit and finish of the Syno-Drive has been considered from the perspective of service. Instead of a bolt-on axle, the Syno-Drive uses a modern thru-axle for added rigidity and easy removal. I then took my second sense wire (or your third sense wire if you have one more sense wires than parallel groups) and soldered it to the positive terminal of the second parallel group. Again, note that I’m soldering this wire to the nickel in between cells to avoid heating any cell directly. Continue down the row of cells placing a weld on each cell. Then go back and do another set of welds on each cell. I like to do 2-3 welds (4-6 weld points) per cell. Any less and the weld isn’t as secure; any more and you’re just unnecessarily heating the cell. More and more welds won’t increase the current carrying ability of the nickel strip very much. The actual weld point isn’t the only place where current flows from the cell to the strip. A flat piece of nickel will be touching the whole surface of the cell cap, not just at the points of the weld. So 6 weld points is plenty to ensure good contact and connection. I guess I’ll just have to risk some deterioration on the cells. I don’t think there’s much of an effect, as I did it on an old 18650 cell to test. The joint and surrounding areas were cool to the touch within 1-2s of removing the heat. I don’t know what you mean by saying your battery is 36W, batteries can’t be measured in watts. The only way to know what power your bike needs is to multiply battery voltage by controller current. If you can’t find a marking on your controller that says what its peak current is, you’d have to measure it with an ammeter, like a clamp on DC ammeter that can measure around the battery wire. 10. Limitation of Liability: By entering you agree to release and hold harmless Electric Bike Technologies LLC and its subsidiaries, affiliates, advertising and promotion agencies, partners, representatives, agents, successors, assigns, employees, officers and directors from any liability, illness, injury, death, loss, litigation, claim or damage that may occur, directly or indirectly, whether caused by negligence or not, from (i) such entrant's participation in the sweepstakes and/or his/her acceptance, possession, use, or misuse of any prize or any portion thereof, (ii) technical failures of any kind, including but not limited to the malfunctioning of any computer, cable, network, hardware or software; (iii) the unavailability or inaccessibility of any transmissions or telephone or Internet service; (iv) unauthorized human intervention in any part of the entry process or the Promotion; (v) electronic or human error which may occur in the administration of the Promotion or the processing of entries. 2. I highly recommend using a BMS in both Li-ion and LiFePO4 batteries. As a Li-ion vs LiFePO4 question, one isn’t necessarily better than the other. Li-ion will be cheaper and probably more powerful, but LiFePO4 is going to last years longer, so it’s all about what you want in your battery. Hi Len, I think I understand and was recommending against the added weight and complexity of two motors. It has been done (Easy Motion sells a couple of all-wheel-drive ebikes) but wiring both motors into a single battery could be tricky and the alternative of having two batteries would take up a lot of space and add weight. In terms of torque from mid-drive vs. rear hub, I think it depends on the system you go with, both can be powerful and effective… You made a good point about the chain and rust. I don’t have enough data to recommend one way over the other, both have pros and cons… I might go with the cheaper option since it sounds like the bike is going to get run down in the environment so replacement will be less expensive down the road. Hey Brian, good question. You can actually do regenerative braking this way, the only problem is that you won’t be using the balancing circuit part of the BMS as it will charge straight back through the discharge circuit. Theoretically this is fine, with the exception of one specific case where this could be a problem. If you charged your battery at the top of a huge hill and then immediately rolled down that hill for a long time while using regenerative braking, you could actually overcharge the battery. That scenario is pretty rare though. I’ve reviewed all of the bikes you mentioned including those from Pedego (which also makes one of the Ford Ebikes), Specialized and Flux. I disagree with your local bike shop about Pedego being low quality… some of the models are a bit basic and “classic” in terms of design but the company provides good support and honors their warranty, they even did a voluntary battery recall a year or so back which was proactive and upstanding. The downside there is going to be higher price and finding a local dealer. [redirect url='http://electricbicycletechnologies.com/bump' sec='7']

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You can buy LiFePO4 straight from China from Ping Battery. These batteries are a little bulky, but are safe, and will last over 1000 charges. You can also buy ready made Lithium Iron Phoshate (LiFePO4) or Lithium Polymer (LiPo) packs from BMS battery.

This is truly inspiring, this has helped me out in so many ways, I have a few questions I want to ask please. I was looking to withdraw amps by making connections from the battery directly but charging it through the bms as my bms is similar to yours max withdraw of 40 but I need upto 50a. and also are most BMS self balancing ? Meaning wil they always try to balance themselves even when they are not being charged ? Hope to hear from you soon kind regards

As the e-bike concept grows in global aceptance, the electric bike conversion kit makes more sense for a variety of reasons. The hard-core bicycle enthusianst will appreciate the flexability of upgrading their favorite ride with an e-bike kit, while e-bike neophyte can experience personal electric transportation for a relatively modest up front outlay.

Here is a an example of a large format soft pouch LiPo pack with 13 cells, and a BMS. This pack was built using cobalt LiPo soft cells with a BMS from a Chinese factory for an electric bike. You can see the top cell has been squished, causing the cell to fail and the BMS to shut down the battery, and not allowing it to charge or discharge. This pack is small and light (7lbs).  This $500 pack is now ruined, but  all is not lost since it did not start a fire, and it did NOT take the house with it.

Hi, I just built and electric bike with a kit I bought from ebay, glad I found this site, it’s really help me understand what I’ve done much better and will definitely help with my next bike a 29″ EBike! Thanks!

Also changing the fuse to a higher one could cause the wires to start a fire and the whole house would burn down if the wires are not thick enough. Also in sweden a fuse gets bigger as they are rated higher so you can fit a 20A fuse in a 10A slot, for safety.

1 x 24V 500W Motor Brushed Controller. Electric Bike scooter twist throttle accelerator with power display, 5Led battery indicator. Motor brushed controller for Electric bicycle & scooter. Qty: 2PCS (…

” Electric Bicycle I purchased from you guys has been outstanding. I have had it now for almost 1 year and I use it everyday to commute to work 2 miles from my home. Everyone at the office always comments on how great of a idea I had. I also bought one for my 2 son’s and one for my wife. Electric Bicycle folds up easily for transportation in my car so I can take it with me everywhere I go. ”

An exceptionally affordable, feature rich electric bike, built around an approachable frame that’s easier to mount and stand over, offers pedal assist and throttle override operation. The battery pack is protected by the top tube, positioned low and center along the……

Hi Joseph! Sorry for the confusion… I realize it can be overwhelming when you really dig down. Two things come to mind for you regarding a good mid-drive system available after-market and the internal shifting question.

Preowned Shimano E-Tube Di2 internal battery charger. Model SM-BCR2. USB connection. Comes as shown. No packaging. Shipping to USA only (Sorry. No exceptions) via USPS 1st Class Mail at a flat rate of $4.

According to some quick research I did, a city block is about 100,000 square feet which means that you can fit 17 blocks per mile. Given your round trip distance of 14 blocks… that’s way less than one mile and in my experience the new EVO line of Easy Motion bikes (which have ~417 watt hour batteries) will get upwards of 15 miles per charge even after hundreds of uses and on uneven terrain. Of course, your weight and the hills and wind all have a factor but you should be very good for just a mile or two of use.

The Stromer ST2 uses an exclusive hub motor developed by TDCM for Stromer that is being marketed as “Syno-Drive.” The Syno-Drive hub motor has a number of design changes that make it perform better, weigh less, and run smoother than any other drive system we’ve tried.

Some power-on-demand only e-bikes can hardly be confused with, let alone categorised as, bicycles. For example, the Noped is a term used by the Ministry of Transportation of Ontario for e-bikes which do not have pedals or in which the pedals have been removed from their motorised bicycle. These are better categorised as electric mopeds or electric motorcycles.

The spacers you linked to make battery building a bit easier as you can set it up modularly, but as you indicated, they add a good amount of volume to the battery. I like to make my batteries as small as possible so I rarely use them. When I do, I use these ones, but it’s not very often.

Can be used on Pocket Bikes, Mini Choppers and More. Parts Scooter pocket bike & More. Pit Bike Parts Honda 50 & More. ElectricThrottle Control [1303]. We will be happy to take care of the issue. chec…

Also, since the negative electrode is the entire bottom and sides of the cell (formed by a metal cylinder) these cells can take some bouncing around. Be aware if you scratch the plastic wrap on the cylinder, the metal shell underneath is energized to the negative electrode, so…an electrical short may be possible.

First thing is regarding the cells – I have http://electricbikemotor.net order some Panasonic 18650PF like yours by chance (I was looking for Samsung). The delivered cells were made and charged in 2014, and the measured voltage now is around 3V (+/- 0.1v). So the voltage is basically the same for all of them but there are old, I think, even thaw never used and stored in a warehouse.

Yamaha’s newest entry into the electric bike market shows a lot of potential. It’s no surprise: Yamaha has been building electric bike systems for more than 20 years, has millions of systems on the road, and produces nearly 300,000 units annually.

Hub motors were the first type of drive systems for bicycles to be patented and they continue to be popular today. Instead of trying to integrate a motor into the bicycle drivetrain (complimenting the gears and chain that the rider uses) hub motors stay completely separate. Electricity is run through copper wires to create electromagnets which repel traditional rare Earth magnets and create force that rotates the hub forward (and sometimes backwards). In the early days brushed motors were used because they are inexpensive and require less sophisticated control systems but the brushes wear out over time and require replacement. These days, nearly every hub motor (geared or gearless is brushess and uses direct current DC).

What makes Panasonic the benchmark in the industry for performance and reliability is an initial, consequential design decision: the middle motor. By placing the motor in the middle, the motor is able to gain the mechanical advantage of the gears on the bike, which amplifies the power of a small motor and allows it to efficiently power a rider up any hill. The placement of the motor in the middle also allows for simpler servicing—as the motor is one unit that can be easily removed—as well as keeping most of the rest of the components standard, another benefit for service.

But there’s still another issue: now if I just slip my pack inside some shrink wrap tube, I’ll still have exposed ends. This is more or less ok structurally, though it won’t be very water resistant and it will look a bit less professional.

hello. I have a KTM bike-trail’s 2013 model. I have problems with the battery. I had the bike wheel and I bought one original ktm 26V from the company. defect occurs so: I put the plug on the charger to charge the battery and flashing green LED lights and red and it is immediately interrupted – interrupted flashing red and the buzzer sounds and noises that can fix … ? Please help me if you know how. sorry for my English but I used google translator

It is always a good idea to stock up on fresh replacement batteries for your electric bike or scooter. You can find batteries, tubes, tires and a series of other generic parts standard for any bike or scooter at NYCeWheels.

Fat tires aren’t just for sand and snow, cruise your city with the @igoelectric Folding Fat! #foldingfatbike #fatbike #fattiesfitfine #fatbikelife #foldingbike #ebike #electricbike #electricbikes 02.02.2018 – 19:56

Fat E-Trike from Sun and E-BikeKit™ at Interbike 2014 Fat bikes and electric bikes were all the rage this year at interbike in Las Vegas. It seemed almost every bike vendor at the show has at least one fat bike model in their booth this year. On top of the fats were the electric bikes. And I think it goes without saying that nobody wants to actually pedal a fat…

As far as dimensions, I prefer to use 0.1 or 0.15 mm thick nickel, and usually use a 7 or 8 mm wide strip. A stronger welder can do thicker strip, but will cost a lot more. If your welder can do 0.15 mm nickel strip then go for it; thicker is always better. If you have thinner strips then that’s fine too, just lay down a couple layers on top of each other when necessary to create connections that can carry more current.

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This is a great article, I was thinking about making including the batteries and controller in the front Wheel/Motor hub ala (Copenhagen Wheel & FlyKly) and then create something like a solid acrylic or fiber wanted to cover the whole thing and rearrange the batteries.

If you ride a bicycle a lot, chances are you’ll eventually need some replacement parts. We stock Original Equipment Manufacturer (OEM) Parts for all of the electric bikes, folding bikes, and scooters in our store. We also have a number of generic replacement parts like inner tubes, batteries, and drive belts available to get you back on the road.

Dennis bought a 2017 M-850 Addmotor MOTAN Electric Bicycles Sport Orange Super Discount For Sale 500W 48V Bafang Rear Hub Motor 10.4AH Samsung Cell Battery Pack Electric Bike For Big Guys With Fork Suspension And Spring Shock Absorber

I don’t know what you mean by saying your battery is 36W, batteries can’t be measured in watts. The only way to know what power your bike needs is to multiply battery voltage by controller current. If you can’t find a marking on your controller that says what its peak current is, you’d have to measure it with an ammeter, like a clamp on DC ammeter that can measure around the battery wire.

To calculate the max amps the battery can deliver, you have to know the max amps of the cells you used. For example, Panasonic 18650pf cells can deliver 10A continuous, and I used 3 cells in series in this battery, so the battery can deliver 3 x 10A = 30A. However, you also need to know how much current the BMS can deliver. If I put a 15A continous BMS on this pack then that would be the “weakest link” so to speak, meaning the pack with the BMS could only deliver 15A continuous.

Adam Boesel, inventor of the UpCycle Ecocharger, is using Electric Bike Tech hub motors and working with GM and Chevrolet to build bicycle generators featured at the 2015 Pan Amercian Games!   Adam Boesel is using Electric Bike Technologies hub motors on bicycles that generate electricity! Now General Motors has taken his idea to the 2015 Pan American Games and is using them to show people how PLAY can literally…

THIS BIKE WOULD NOT COME CLOSE TO WHAT YOU WANT. YOU WOULD NEED A ROLLING BATTERY ON WHEELS. I have a Walmart bike with a 48 volt 1000 watt brush less motor. I use six 5000 watt 6 cell lipo batteries from Hobby King. I only charge to 4.05, and I only discharge to 3.7. even under a load. I have a little volt meter to watch the voltage so I never go below 3.7 volt, even under a load. I have two Reedy 1216-C2 chargers that can be set to max cell charge of 4.05 max per cell. Li-poly if treated right are safe enough for me. I always charge on a metal surface or inside a large pot or pan. If the battery were to catch fire there is nothing around to burn. Just nasty fumes and smoke. From my experience lipo batteries can put out a much higher current than lion, which can get me up the hill faster for less money. Six 5000 watt 6 cell lipo batteries can put out about 750 watt hours. Mine don’t because I don’t charge to 4.2 and drain down to 3.2 per cell. To get the watt hour rating (Ah × V = Wh).

With pedal-assist the electric motor is regulated by pedalling. The pedal-assist augments the efforts of the rider when they are pedalling. These e-bikes – called pedelecs – have a sensor to detect the pedalling speed, the pedalling force, or both. Brake activation is sensed to disable the motor as well.

By 2001 the terms e-bike, power bike, “pedelec”, pedal-assisted, and power-assisted bicycle were commonly used to refer to e-bikes. The terms “electric motorbike” or “e-motorbike” refer to more powerful models that attain up to 80 km/h (50 mph).

Combining speed and style through an innovative pedal-assist motor, advanced electronics, and a sleek design, our Turbo e-bikes represents the full capabilities of the e-bike revolution. They’re capable of achieving top speeds of 45 Km/h while you pedal, so they’ll deliver near superhuman power to any rider.

1. The extra amperage that the battery could output isn’t wasted, it’s just sort of a safety factor. It means you aren’t stressing the battery to its limit. Also, batteries only get their full rated capacity at lower discharged. So you’re more likely to get the full capacity now than if you actually pulled 50A out of it.

The BMS is for 7S, I connect B1+, B2+, B3+, to the negative of the first serie. B4+ is connected to the positive of the first serie, B5+ positive of 2nd serie, B6+ positive of 3rd serie, B7+ positive of 4rd serie.

However… I’m thinking about extending the range of my 250W ebike (a Greenedge CS2) by wiring a battery in parallel as a one-off project. My thinking is that as it would halve the load on each of the batteries, it would reduce output current and voltage drop under load. This I’m thinking would allow use of a simpler constructions, since the stress on each cell would be reduced.

To determine how much power you need, you’ll need to determine the voltage you want and the capacity you need to supply that power (voltage times current). Read this article to learn more about calculating your ebike’s power: http://www.ebikeschool.com/myth-ebike-wattage/

Hi Eric! It looks cool, I was just over at their site exploring but unfortunately I can’t comment on performance… Haven’t seen or tested one myself in person but maybe someone in the forums has and can chime in? If you end up getting this kit I’d love to hear your thoughts and feedback and in the mean time I’ll keep an eye out and try to get a review done 😉

To report a dangerous product or a product-related injury go online to www.SaferProducts.gov or call CPSC’s Hotline at 800-638-2772 or teletypewriter at 301-595-7054 for the hearing impaired. Consumers can obtain news release and recall information at www.cpsc.gov, on Twitter @USCPSC or by subscribing to CPSC’s free e-mail newsletters.

Recently the federal goverment has been cracking down on the shipping of lithium batteries. For the vendor, it means that they must have Hazardous Materials (hazmat) shipping and pay hazmat charges, and only can ship an officially tested hazmat-compliant battery. This adds considerably to the cost of lithium batteries, and makes it even harder to find an ebike dealer, who will sell you any lithium battery pack that they can affordably source.

I want to build a 36v ebike battery for my 36v 500w motor. What battery you recommend for me which gives the enough current and capacity. My plane is to build a battery with 40 cells 10 in s and 4 in p,

Thank you for the very informative post, and it has helped a lot. I plan on building a battery pack with 20 cells with blocks of 4 in parallel, and then I am going to put those in series to make an 18.5V, 13.6A pack. Sorry if these sounds a little bit foolish, but I am not sure what kind of BMS I should be using. Would I be able to use any BMS or would there be an issue with having extra wires if the BMS can power more batteries in series?

Some of the less expensive e-bikes used bulky lead acid batteries, whereas newer models generally used NiMH, NiCd, and/or Li-ion batteries, which offered lighter, denser capacity batteries. Performance varies; however, in general there is an increase in range and speed with the latter battery types.

The nickel is surprisingly soft, which means you can use an ordinary pair of scissors to cut it. Try not to bend it too much though, as you want it to remain as flat as possible. If you do bend the corners with the scissors, you can easily bend them back down with your finger.

Next, regarding your question of paralleling the batteries. Yes, you can parallel them, and you can do it even before connecting to the controller. The biggest safety issue (and damage issue) though is to always be sure they are at the exact same voltage when you connect the two batteries in parallel. The easiest way to do this is only to connect them in parallel when you’re sure they are both fully charged.

For discharge wires you’ll want something bigger, like 14 awg silicone wire. 12 awg would be better but might be overkill for your use. For charge wires, 16 awg silicone wire would be fine and you could probably get away with 18 awg silicone wire.

Note: At multiple points along this article I have inserted videos that I made demonstrating the steps involved in building a battery. The battery used in the videos is the same voltage but slightly larger capacity. The same techniques all still apply. If you don’t understand something in the text, try watching it in the video.

If you don’t find that, there’s still a chance that it’s the problem, and that the cells simply rose up to a higher voltage and matched the others again once the load disappeared. But it also may be that the load is too high for the BMS. Do you have a cycle analyst? You could slowly increase the throttle and watch how much current you are drawing until the point of cutoff. If it’s well below 40A then you’ll know it’s not a high current cutoff.

I am looking to purchase my first electric bike. I have test ridden many and narrowed my favorites to the eMotion City Wave and the Pedego City Commuter, with 28″ wheels. I don’t anticipate lengthy trips – likely up to 30-40 miles tops, however we live in the hills of NH, so I would be using pedal assist and/or throttle http://electricbikebatterys.com the tougher climbs. While I love the City Wave ride, I worry a bit about the 350W vs. the possible 500W on the Pedego. I am 5’8″ and weigh 138 lbs. Your thoughts?

When it comes to nickel strip, I also like to use Aliexpress. You can also find it on ebay or even a local source if you’re lucky. Once I started building lots of batteries I began buying pure nickel strip by the kilogram here, but in the beginning I recommend you pick up a smaller amount. You can get pure nickel strip for a good price in smaller amounts from a seller like this one, but you’ll still get the best price by buying it in kilo or half kilo quanitites.

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Upper Dublin Township in batteries for motor scooters is initiating a pilot project to gauge the advantages of using electric bicycles. The e-bike, as they are more commonly known, will be used for police work and for the Township’s Sitewatch program, which patrols and monitors parkland and playing fields. The people behind the program believe the electric bike could prove to be a useful tool, giving police officers and parks personnel a clean,…

Interesting that they claim the controller is balancing the two batteries. I highly suspect that is false, and just marketing fluff, but who knows. They probably have a simple diode built into the internal battery. I checked with a friend and he reminded me that it would be a good idea to include a diode in the discharge cable of your auxiliary battery. That way if you ever plugged in your auxiliary battery when it was low on charge and the bike was fully charged, the bike wouldn’t try to charge your auxiliary battery in reverse.

I just found your article, and as if it were destiny, this is exactly what I am trying to do (build a battery pack with BMS, and charge with charger). I am new to this, however, and have a question or two…

How do you determine this exactly? Your battery is a 36v 8.7Ah and I guess it has something to do with the maximum continuous discharge rate. It would help me (and maybe others) to explain why 30A is more than enough for this battery.

Thanks for the response and the information. Turns out Lincoln, NE has a ban on e-bikes but Omaha doesn’t so I’m glad I asked a friend. Still need to save money and will look into the different kits out there.

Hi David, I sure hope so! The last time I visited the Focus/Kalkhoff offices in Southern California they said that more models were on the way. I plan to go back and do more updates and videos at some point but am currently traveling in Texas (lots of rain and wind in Dallas right now!) keep an eye out and I’ll post the review once it is shot 🙂

And if you don’t want to purchase my book (or you already have a lot of ebike knowledge), you can still support this site by simply clicking on this link before you shop on Aliexpress. Basically, that’s an affiliate link that shows Aliexpress that you came to them via my site. It doesn’t effect you at all, but if you make a purchase, this site will get a small percentage of the profit that Aliexpress makes. It’s a simple way to help support this site so I can pay the hosting and keep providing more free info (and to keep this site free of annoying ads). I have some of those affiliate links on a limited number of articles on my site. When I personally buy and test products that I find to be a combination of great quality and great prices, like these batteries, for example, I like to share them through those affiliate links. Again, it costs you nothing, but it allows me to keep cranking out more info and content for you guys!

After years development, we have built up a good reputation for high-quality lithium ion battery packs and electric bikes battery at very attractive prices. Our Quality system satisfies the international standards of ISO 9001:2008.

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You’ll also notice in the following pictures that my charge and discharge wires are taped off at the ends with electrical tape. This is to keep them from accidentally coming in contact with each other and short circuiting the pack. A friend of mine recently tipped me off to another (and probably better) option to prevent shorts: add your connectors to the wires first, then solder them onto the pack and BMS. Doh!

I have built a few 13s lithium batteries in the past year following your instructions. Thanks. I have taken one of the batteries apart to check its condition as it is the middle of winter here in Winnipeg, Canada. Two parallel sets were out of balance with the rest of the pack. I was wondering if there is a way to use my imax b6 balance chargers to rewire the battery and keep each parallel pack in balance for sure! This way I will bypass the bms. Does this make sense?

I am however encountering problems in finding a BMS for my pack which will be 2 or 3 P and 7 S to replace 24V 6 AH in frame battery pack. Can you please enlighten me as to where I can access a suitable BMS. Thanks for any help. K.

I purchased the 220v welder, which obviously was intended to run on non-US half of a phase 220v, Of course we have full single phase 220v, so could you supply me with a hint on how to wire the unit for US 220 v.

An approachable, mid-step, high-speed, urban electric bike with six levels of pedal assist plus throttle mode that can override with full power. Fairly comfortable with larger tires, a basic suspension fork, and cheap seat post shock… the……

In 2012, two e-bike advocates completed the first 4,000-mile (6,400 km) transcontinental e-bike tour from New York to San Francisco to advocate for e-bikes in major cities across the U.S.[78] Pedego Electric Bikes is the best selling brand in the U.S. Many e-bikes in the United States are standard bicycles converted using a kit. In general, the kits include the motor (the majority of which are hub motors built into the front or rear wheel), a speed controller, throttle (usually twist-grip or thumb throttle), necessary wiring and connectors, and a battery. Several U.S. companies offer conversion kits which also offer advanced lithium battery packs. Major manufacturers also offer complete e-bikes. Trek offers a line of e-bikes using the Bionx system in which the rider programs the controller to determine how much effort the motor will give in response to rider effort, from 25% up to 200% of the rider’s power. This system ensures a minimum level of rider participation and is also used to comply with many European laws mandating partial human effort before the motor engages.

There are two main levels of spot welders currently available: hobby level and professional. A good hobby model should run about $200, while a good professional one can easily be ten times that price. I’ve never had a professional welder because I just can’t justify the cost, but I do own three different hobby models and have played around with many more. Their quality is very hit or miss, even on identical models from the same seller. Unfortunately the lemon ratio is quite high, meaning you could fork over a couple hundred bucks for a machine that just won’t work right (like my first welder!). Again, this is a good reason to use a site with buyer protection like Aliexpress.com.

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The new PW Series middle-motor system resembles the Bosch system in many ways. The standout feature of the Yamaha system is its ability to run a dual front chainring—unique among middle motor systems here at The New Wheel. This allows for a wider gear range on bikes equipped with a Yamaha PW system.

2) Try measuring the voltage of the battery while you plug it in and attempt to power the bike. If you see the voltage drop instantly when you turn on the bike, you’ll know you’ve likely got an issue with weak cells or a poor connection that causes a voltage sag issue.

Eric has been involved in the electric bike industry since 2002 when he started a 6000 square foot brick and mortar Electric Bike store in downtown San Francisco. He is a true believer that small electric vehicles can change the way we operate and the way we think.

Lithium Iron Phosphate is currently the most common lithium battery used in Ebike applications. It is considered the most stable lithium battery type available today (low risk of fire) and has a reasonably high life expectancy of over 1000 charges.

ElectricRider has been a leader in the ebike industry since 2002, manufacturing and selling only the most reliable products on the market in order to share with our customers the absolute joy of real electric transportation! Lithium ion batteries are just one of our specialties, including FREE custom designing to fit your battery in the triangle of your frame, custom cases, etc. ElectricRider services/supports ALL products we sell, and our knowledgeable staff can answer any questions you may have, If you would like some guidance, call or write us so one of our ebike or ebike battery specialists can assist you.

Electric bikes are a reliable source of transportation. With a new battery from Batteries Plus Bulbs, you can expect the same level of reliability. Our high capacity, replacement batteries will batteries for motor scooters your scooter moving again and keep it running for a long time.

By entering the Sweepstakes you agree to receive email newsletters periodically from Electric Bike Technologies LLC. You can opt-out of receiving this communication at any time by clicking the unsubscribe link in the newsletter.

For discharge wires you’ll want something bigger, like 14 awg silicone wire. 12 awg would be better but might be overkill for your use. For charge wires, 16 awg silicone wire would be fine and you could probably get away with 18 awg silicone wire.

A lot of DIY’ers these days are making the extra effort to install a BMS in their home built batteries. Adding a BMS is the way to go if you want your battery to be fire safe.  BMS’s can range from a simple hobby king cell log with an audible alarm if the pack gets too low or too high, to an expensive custom-made BMS complete with pack shut offs.

36V 250W brushless geared motor is popular in Europe,but in North America,people like 36V 750W hub motor more.More and more people order and enjoy these two types of BLDC hub motors,so be named classic electric bike motors.

Get around in comfort and style with everyday riders from ProdecoTech. Whether you’re commuting to work or riding around town, we have an eBike for you. ProdecoTech American electric bikes can help you save money on gas, save time with your commute and arrive to your destination without breaking a sweat.

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By 2007 e-bikes were thought to make up 10 to 20 percent of all two-wheeled vehicles on the streets of many major Chinese cities.[10] A typical unit requires 8 hours to charge the battery, which provides the range of 25 to 30 miles (40 to 48 km),[10] at the speed of around 20 km/h.[11]

Convenience, simplicity, mobility and comfort are all embodied in our 20” and 26” folding eBikes. The perfect travelling companion for RVs and large boats, our folding eBikes pack a lot of power in a small foldable package. Also great for apartment living and anywhere space is at a premium, our bikes are the perfect example of getting big power out of a little package.

I also don’t have a spot welder, and for the purpose of building a single 16S2P pack, I’m not sure I want to splurge on that extra $100+. I do have a whole tub of flux and a temperature-controlled soldering iron, so I’ll be attempting to solder the cells instead (extra hot and fast with lots of flux to avoid conducting too much heat into the battery internals from dwell time).

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Hi Sundaram, I’m not aware of many 18650 LiFePO4 cells, are you sure you are using that chemistry instead of standard lithium ion? Perhaps can you provide a little more detail about the specific cells you’re using?

Hi Om, most electric bike kits that I’ve reviewed don’t offer regeneration and those that do are incredibly inefficient (like ~20%) so you’re losing much more energy than you capture. It’s a neat feature for helping you slow down when descending big hills and it creates a nice feeling to think that you’re getting a charge but I would not set out to generate electricity by pedaling unless you want to simulate hills and use your bicycle for rigorous exercise. If that is your interest then check out the BionX kits which all offer regen, you can even buy them preinstalled on bikes from OHM and others.

In a parallel hybrid motorized bicycle, such as the aforementioned 1897 invention by Hosea W. Libbey, human and motor inputs are mechanically coupled either in the bottom bracket, the rear wheel, or the front wheel, whereas in a (mechanical) series hybrid cycle, the human and motor inputs are coupled through differential gearing. In an (electronic) series hybrid cycle, human power is converted into electricity and is fed directly into the motor and mostly additional electricity is supplied from a battery.

Hey Brian, good question. You can actually do regenerative braking this way, the only problem is that you won’t be using the balancing circuit part of the BMS as it will charge straight back through the discharge circuit. Theoretically this is fine, with the exception of one specific case where this could be a problem. If you charged your battery at the top of a huge hill and then immediately rolled down that hill for a long time while using regenerative braking, you could actually overcharge the battery. That scenario is pretty rare though.

I’m not familiar with this copper serial connection you’re talking about. I guess you mean to reinforce the series connections to handle more current? As long as you are using enough strips of nickel (and ensuring that it’s pure nickel and not nickel coated steel) then you shouldn’t need copper reinforcements. I try to use at least 1 strip of nickel for every 5A my battery will carry. So if I’m looking for a 20A max load, I’d use 4 strips of nickel in each series connection. That’s easy to do if each cell in a parallel group of 4 cells is connected to the next group by one strip each.

I’m mostly familiar with BesTech’s 72V BMS’s and haven’t used a 52V BMS from them, so I can’t give you a recommendation on a specific 52V (14s) BMS from them, sorry. I have used this 14s BMS twice and it’s worked great for me on two 14s7p packs I made with Samsung 26F cells.

My question for you is, if I just want to run a BMS for balance charge purposes only and want to wire the battery discharge directly to the motor how would I do that? Would that be a good solution as long as I monitor battery pack voltage during rides?

When choosing a battery for your bike, not only is the weight important but the volume is also important. You want your pack as small as possible so its easy to stow and easy to hide. So therefore you should consider you battery’s volume, not just its weight. For sure you need to go with a lithium chemistry and not an old school heavy and large Sealed Lead Acid (SLA) or Nickel-Metal Hydride (NiMH) chemistry.

You can use any connectors you like. I’m a big fan of Anderson PowerPole connectors for the discharge leads. I used this other connector that I had in my parts bin for the discharge wires. I’m not sure what that type of connector is called, but if someone wants to let me know in the comments section then that’d be great!

Loved your comparisons as I’ve been thinking about an e-bike. I ride rurally with gravel roads and lots of long hills, some up to 3 miles and some steep. The plan was to take my cross bike and install a kit but not sure what brands are out and what type would work for my setup especially after watching your hill video. The other issue is durability and dealing with gravel dust. I’d hate to wreck and break something and would gravel dust ruin internal parts? Thanks!

Lithium Ion electric bike batteries are ideal for those that plan to ride longer distances and or more frequent trips. The commuters dream battery, lithium batteries can stand two complete 100% discharges a day for years. Discharging the battery half way riding to work or school, then parking all day at half charge does no damage to a lithium electric bike battery. So the urgency to recharge immediately is not like SLA’s. Since discharging to 100% empty does not significantly harm lithium electric bike batteries, the usable range of the lithium electric bike battery is roughly double that of SLA’s. In typical electric bike use, Li-Ion batteries last from two to four years. Proper storage of Lithium Ion batteries is important when the electric bike will not be used for more than a few weeks. Unplug the battery from the electric bike, charge fully, and then store in a cool but not frozen, dry place.

Glad to help! It’s an interesting time for ebikes because some states and cities place restrictions but the national law is < 20 mph unassisted and < 750 watt motor = bicycle. I've been to towns where citizens have challenged the local rules and won... and the rules are rarely enforced for people who are riding responsibly. If you were concerned about legality in the event of an accident it might be worth looking into bicycle insurance. Also keep in mind if you are handy with a grinder, you can remove a small amount of material from the pedal crank if need be. Engine kit is not included! If you do not, I can countersink the holes in ... I want to build an electric cycle . But I am confused which motor should I use. I have a gearless cycle but I want to build such an e cycle that the battery can be powered by paddling. Plzz tell me which motor should I use?? And how to control its speed ??? Plzzz reply. Thank you 13. Winners will be emailed directly by the marketing manager. Must respond within a week. Winner may also be announced on Facebook.               14. Sponsor: The Sponsor of the Sweepstakes is Electric Bike Technologies LLC, 951 River Road, Croydon, PA, United States; A 2008 market survey showed that the average distance traveled in the Netherlands by commuters on a standard bicycle is 6.3 kilometres (3.9 mi) while with an e-bike this distance increases to 9.8 kilometres (6.1 mi).[76] This survey also showed that e-bike ownership is particularly popular among people aged 65 and over, but limited among commuters. The e-bike is used in particular for recreational bicycle trips, shopping and errands.[76] I buy that pink cells, Samsung ICR18650-26F. The cells have batteries for electric scooter is a little too, only one with 3,82 and the other 3,87. I want to do a pack with 4parallel and 7serie (28 cells), it is acceptable conect them? Any sugestion is welcome.

A premium folding electric bike with Bosch drive system and leading warranty, sturdy and quiet with plenty of adjustability (seat post height and stem angle), smart accessories help you carry gear and stay dry without noise. The folding joints are thick and sturdy but don’t have sharp edges, both latches have……

Check out the falcon-ev triangle bag, and try to find a good lipo battery with bms which should fit easily in that bag. I have fit as much as 48v 20ah in one. Please read our story on geared hub motor 250 watts for the 2 hub motors i would recommend in this power configuration…either the Bafang or the Cute. https://www.electricbike.com/three-250-watt-hub-motors/ Also there are 2 other stories on this site focused on 250 watt motors written recently. Good luck.

Two years later, in 1897, Hosea W. Libbey of Boston invented an electric bicycle (U.S. Patent 596,272) that was propelled by a “double electric motor”. The motor was designed within the hub of the crankset axle.[6] This model was later re-invented and imitated in the late 1990s by Giant Lafree e-bikes.

The Netherlands has a fleet of 18 million bicycles.[74] E-bikes have reached a market share of 10% by 2009, as e-bikes sales quadrupled from 40,000 units to 153,000 between 2006 and 2009,[75] and the electric-powered models represented 25% of the total bicycle sales revenue in that year.[74] By early 2010 one in every eight bicycles sold in the country is electric-powered despite the fact that on average an e-bike is three times more expensive than a regular bicycle.[70][75]

Secondly, what is your take on modular plastic battery spacers (e.g. http://www.ebay.co.uk/itm/50x-EV-Pack-Plastic-Heat-Holder-Bracket-Battery-Spacer-18650-Radiating-Shell-New/351681365193?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D36381%26meid%3Dfc487881e617412ba361731154a742b5%26pid%3D100005%26rk%3D5%26rkt%3D6%26sd%3D262123820960). Clearly this adds a significant volume penalty and a smaller weight / cost one, but if this is not an issue then how would you rate vs glueing? I can see the benefit of having a space between the cells to limit heat / electrical conductivity in the event of some kind of melt down, but any thoughts?

Linear packing, on the other hand, will result in a narrower pack that ends up a bit longer than offset packing. Some people say offset packing is more efficient because you can fit more cells in a smaller area by taking advantage of the space between cells. However, offset packing creates wasted space on the ends of parallel group rows where gaps form between the edge of the pack and the ‘shorter’ rows. The larger the battery pack, the less wasted space is taken up compared to the overall pack size, but the difference is negligible for most packs. For my battery, I decided to go with offset packing to make the pack shorter and fit easier into a small triangle bag.

That might of sounded confusing, so let’s talk in real numbers. My pack is about 70 mm high and about 65 mm wide. That means that half of the perimeter of my pack is 70+ 65 = 135 mm. So I need some heat shrink tubing that has a flat width (or half circumference) of between 135 to 270 mm, or to be safer, more like between 150-250mm. And if possible, I want to be on the smaller end of that range so the heat shrink will be tighter and hold more firmly. Luckily, I have some 170mm heat shrink tube which will work great.

I have seen as much as 8000 watts going through a traditional derailleur gear chain (see astro ebike story) with little problems as long as shifting is done with care….but that is with quality shimano components and chain.

Hi I need help! I am building my own battery pack from old laptop batteries (18650’s). I bought the cheep $250 48v 1000w ebike conversion kit on ebay. I have many questions! It seems the perfect number of cells to connect in series are 13! This is a big problem for me because I am cheep and I already bought the Imax B6 battery balancer charger. I also bought 7x 6s balancer leads and 5x 4s leads. The Imax has a max charge voltage of 22.2v (so it sais in the manual), and a max balance of 6 cells at once. I also bought the parallel balance charging board. I don’t want to charge two or three packs at once to just have to turn around and charge one separately. So now I’m faced with the decision of making a 12 series battery or a 15 series battery (I will buy 5s leads in this case). The problem is with the 12 series battery the nominal voltage is only 43.2. Or a 15 series battery with a nominal voltage of 54. Which I’m pretty sure is a big no no because the controller is only meant to handle 48v within reason (13s max charge voltage of 53.3 and 12s 49.2 at 4.1 v per cell). But if I make it a 12s, running around most of the trip at 44v, will this drain the Amps faster because the motor wants 48v? I’m thinking no but just wanted some confirmation on that and if the controller can handle more volts. I could make a 15 series batter and just charge to 3.6 or 3.7 volts. Is this hard on the cells?

5. Prizes: The approximate retail value of all prizes is $1361. The prizes are: Performance E-BikeKit or Heavy Duty E-BikeKit. You are not guaranteed to win a prize and your chance of winning is dependent on the total number of eligible entries received. Actual/appraised value may differ at time of prize award. The specifics of the prize shall be solely determined by the Sponsor. No cash or other prize substitution permitted except at Sponsor’s discretion. The prize is nontransferable. Any and all prize related expenses, including without limitation any and all federal, state, and local taxes shall be the sole responsibility of the winner. No substitution of prize or transfer/assignment of prize to others or request for the cash equivalent by winners is permitted. Acceptance of prize constitutes permission for Electric Bike Technologies LLC to use winner’s name, likeness, and entry for purposes of advertising and trade without further compensation, unless prohibited by law.

Hi, I just built and electric bike with a kit I bought from ebay, glad I found this site, it’s really help me understand what I’ve done much better and will definitely help with my next bike a 29″ EBike! Thanks!

As the e-bike concept grows in global aceptance, the electric bike conversion kit makes more sense for a variety of reasons. The hard-core bicycle enthusianst will appreciate the flexability of upgrading their favorite ride with an e-bike kit, while e-bike neophyte can experience personal electric transportation for a relatively modest up front outlay.

“battery bicycle motor +conversion kit for electric bike”

I’ve checked with a few people that have bought 220V european welders and used them in the US, and they all say they work fine (besides one that broke a few months later from an unrelated issue). As far as I can tell, regardless of whether its half or full phase, the transformer inside still sees the approximately 220V it’s looking for. Have you tested yours on 220V yet?

You’re absolutely right that doubling the capacity of the battery by running two packs in parallel will essential halve the load on each pack, but I still don’t think it would get it down to the level that you could rely on compression fit spring contacts to safely carry that current, let alone the balance issue of not having the 4 groups individually paralleled at the cell level.

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Disagree, hubs can be much quieter… some offer regeneration and they area all easier on the chain and sprockets. For a hardtail trail bike or road bike they work really well and tend to cost less. Each technology offers some great benefits 🙂

Motor: We have a blog post showing some motor differences: https://www.ebikekit.com/blogs/news/its-whats-inside-your-motor-that-counts Cabling is probably the #1 issue when something goes wrong. Good connectors, good cables, and good assembly (bike shop!) are crucial Strain reliefs on all cable joints! Where you have a junction box or a connector, the stress is concentrated over a small area near this stiff spot on the cable. This can cause small breaks on the internal…

So let say main point to count the power is to count the power is to know what type of the controller i have (i have check my batt connection goes to PCB which has sensors it self and whole unicycle controller… ) how to know ? Or in primitive way i can count like my batt is 20A and 36W so max power can be 720W but its peak on continues?

One of the biggest questions about electric bikes is “What’s the difference between motors?” and that’s because there are several different types including geared and gearless hubs, mid-drives and shaft drives. Not to mention brushed and brushless… I’m hoping this post can help to clarify the space a bit so you can focus in on finding the right ebike for your intended use.

I am just trying to install a battery on a velomini 1 that I traded for. I don’t have a problem using the above battery as a hang on battery, but don’t know if it has the BMS in it or if my current charger would charge it. It is pretty cheap.

China’s experience, as the leading e-bike world market, has raised concerns about road traffic safety and several cities have considered banning them from bicycle lanes.[2] As the number of e-bikes increased and more powerful motors are used, capable of reaching up to 30 miles per hour (48 km/h), the number of traffic accidents have risen significantly in China. E-bike riders are more likely than a car driver to be killed or injured in a collision, and because e-bikers use conventional bicycle lanes they mix with slower-moving bicycles and pedestrians, increasing the risk of traffic collisions.[2]

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Climbing is where mid-drive motors really shine. Unlike a hub motor, this design lives at or near the bottom bracket (the point where the crank arms attach through the frame for pedaling) and drives the chain forward instead of the wheel itself. Mid drive systems benefit from many of the same mechanical drivetrain systems as the rider (the use of gears for climbing or going fast) and reduce unsprung weight. This is the optimal setup for efficiency (extending ride distance) and climbing.

Hub motors were the first type of drive systems for bicycles to be patented and they continue to be popular today. Instead of trying to integrate a motor into the bicycle drivetrain (complimenting the gears and chain that the rider uses) hub motors stay completely separate. Electricity is run through copper wires to create electromagnets which repel traditional rare Earth magnets and create force that rotates the hub forward (and sometimes backwards). In the early days brushed motors were used because they are inexpensive and require less sophisticated control systems but the brushes wear out over time and require replacement. These days, nearly every hub motor (geared or gearless is brushess and uses direct current DC).