48V or 72V? Watt/hr + Peukert, etc.

3717 Views 4 Replies 4 Participants Last post by frodus, Oct 25, 2010

mechman600

Discussion Starter · Oct 23, 2010

I was going to go with 48V for my motorcycle. 48V X 55ah = 2640 watt/hr. If I go with 72V X 38ah, I get 2738 watt/hr, roughly the same. I am assuming that purely from a range standpoint, the 72V system will go farther because of less current draw and therefore less Peukert effect. Or do I just go with their [nearly] equal total watt/hr and assume that their ranges will be [nearly] the same?

James

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Jan

· #2 · Oct 23, 2010

If you use lets say 5kW to maintain speed. This means you draw a 104 amps from the 55Ah pack, which is almost 2C. And you will draw 70 amps from the 38Ah pack, also aproximaly 2C. So the peukert effect stays the same.

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