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Re: Question about battery for Ebike

Posted: Apr 03 2019 12:25pm
by Vikingimike01
Thank you!

Re: Question about battery for Ebike

Posted: Aug 18 2019 3:52am
by Vikingimike01
MadRhino wrote:
Mar 31 2019 8:02pm
Vikingimike01 wrote:
Mar 31 2019 1:57pm

I am not planning on needing all that 5kw.
Nope. You are planning to need much more. You just don’t know yet.
Hey you were right I have my 5kw and it goes 50km/h lol, I got my drivers license and I can use it as a motorcycle now. The guy sent a 100Amp one instead of teh 120amp one in the kit!!!! Kinda mad!! Not sure if that would increase max speed... 20+ amps

Re: Question about battery for Ebike

Posted: Aug 18 2019 6:58am
by MadRhino
You need lots of power to benefit full advantage of a big hub motor. If I was building with that motor, the battery would be suitable to feed 500A. This means that using low C rate cheap cells, you will have to carry them in a trailer after your bike is filled with all it can hold.

Stop buying cheap batteries, or replace your big motor with a smaller one. Compare with combustion engine performance: if you build with a 1000 hp motor, you must plan high octane gas and a big fuel tank.