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Discussion Starter · #1 ·
So I've done some research, I'm new to this EV world and I'm quite overwhelmed. I've narrowed down the numbers that I want to achieve +- a few variables like motor and Controller ratings etc.

Goals
1) At least 100volts
2) Minimum 30ah
3) High discharge rate Min 200 amps continuous (300-400 is fine)
4) fast charging capabilities
5) batteries that pack a punch due to the size of a dirt bike.

I can go more on these figures to give me even more headroom in all areas, its just the idea of having that power, under control via the controller programming is the key and playground I want for the bikes development.

Side note, one idea is to use my power tool batteries (makita) with their respective charger, converted to draw power rather charge the batteries.

Cheers guys,
Regards

Michael
 

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Discussion Starter · #3 ·
Heh... you're not getting 200A continuous from a 30Ah pack, at least not without some unusual chemistry like LTO. You may be able to squeeze out 150A, but the pack will be unhappy.
How many Ah needed? I'm designing the batteries to be plug and play (swappable). Plus I won't be going all out every second, only on hills and straights.
 

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for 200A continuous with the typical automotive NMC cells need at least 40Ah (5C discharge), but ideally you want to reduce the discharge rate even further. If you're using new cells, then better to check the spec sheets instead of guessing.
 
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