“lithium battery bike _”

I have a homemade battery made up of 84 NCR18650b cells that I bought (in other words, I didn’t make the battery myself). Anyway, I lost the charger for it at Burning Man, and now I’m going nuts trying to figure out what kind of charger to buy. The arrangement of the batteries is odd. Part of the battery looks pretty straight forward in what I believe is a 8s6p design, but the rest look different… they are set up like a 4×3 rectangle framed by 2 L’s. I would have happily uploaded a picture, but that doesn’t seem possible. Is there anyway I can send you a picture to show you what I mean?

Love your youtube videos! I’m actually looking to make an electric longboard on the cheap. I have an 18V motor (from a battery drill) that I want to power and I have purchased 10 (AA) 3.6V 3000mAH Lithium-ion batteries with the intention of connecting them together in a series arrangement to run the motor. What would be the best way to arrange them? And is there a need for a BMS for a smaller arrangement? Or would it be more time effective/safer to just charge each battery individually? Any help is appreciated.

Finally, have you used the type of spot welder shown with hand held probes? Can see the benefit of greater reach, but do you know if this gives as neat a result (my spot welder there is a very firm press up to activate, hence the discharge only occurs when the tips of the welder are pressing the strip firmly against the top of the cell so i assume ensuring a tight weld)

The Powerful 350W Brusless Motor Has Excellent Power To Reach Speeds Up To 12.5MPH And On Hills It Gives You The Power To Easily Reach The Top. Power: 350W. Turning e-Bike riders into explorers and ad…

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Thanks! I’m putting together a new rig I need to tow a 50lb trailer over some soft sand…I’m realizing the proper system is paramount. Any recommendations for power/battery/controllers? DIY eBikes website?

Nickel Metal Hydride batteries are about 20% lighter and 30% less voluminous than a NiCd pack of the same capacity. They have similar discharge and charge characteristics, but because of the higher energy density they are available in higher capacities than NiCd packs. Because NiMH is safe for disposal in the landfill while Nickle Cadmium is not, the metal hydride has almost completely replaced cadmium in most consumer batteries.

When soldering these wires to the nickel strip, try to solder between two cells and not directly on top of a cell. This keeps the heat source further from the actual cell ends and causes less heating of the battery cells.

The high C-rate is not the only reason LiPo is adored by the high performance crowd, the addition of Cobalt to the cathode meant that more power would fit in a smaller package. This was driven by the boom in Radio-Controlled (RC) batteries for electric scooter in the late 1990’s (RC airplanes, cars, helicopters, etc). When that market suddenly expanded, an Australian enthusiast started a company to supply RC parts from factories in China. Hobby King.com was born. Last year, due to popular demand, HK has opened warehouses in The USA and in Germany (edit: even more countries have HK warehouses now).

Another advantage of lead acid batteries is their high power output potential. Lithium batteries generally don’t like to handle too much current. SLAs, on the other hand, can provide huge amounts of current. If you are planning a very high power electric bicycles, SLAs might be a good option for you.

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