Question about battery for Ebike

General Discussion about electric bicycles.
Vikingimike01   100 mW

100 mW
Posts: 48
Joined: Mar 31 2019 4:16am

Re: Question about battery for Ebike

Post by Vikingimike01 » Apr 03 2019 12:25pm

Thank you!

Vikingimike01   100 mW

100 mW
Posts: 48
Joined: Mar 31 2019 4:16am

Re: Question about battery for Ebike

Post by Vikingimike01 » Aug 18 2019 3:52am

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

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MadRhino   100 GW

100 GW
Posts: 5912
Joined: Sep 03 2010 5:28pm
Location: Montreal QC Canada

Re: Question about battery for Ebike

Post by MadRhino » Aug 18 2019 6:58am

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.
Make it fool-proof, and I will make a better fool.
Current bikes
Street: https://s20.postimg.org/ewrvugywt/Session_04_2015.jpg
Dirt: https://s20.postimg.org/lbqwr55ml/IMG_0157.jpg

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