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But you rather made my point. That car battery may provide the high current needed by the motor but only for a very short time. So it's likely the AHr rating of the battery (at the operating current) is the factor that determines the battery size, not whether it can provide the maximum current.......................................
I must disagree with crutschow though... your battery needs to be able to supply 400-500A to run a 300A motor and the AHr rating determines range. a typical crap car battery would be 500CCA (Cold Cranking Amps - the current rating) but only 50AHr ( the "range" of your vehicle ) but that is as good as a lie since lead acid cells ONLY deliver HALF their AHr rating at high drain rates!
Dan
But you rather made my point. That car battery may provide the high current needed by the motor but only for a very short time. So it's likely the AHr rating of the battery (at the operating current) is the factor that determines the battery size, not whether it can provide the maximum current.
I would never try to make a car battery!!!!Does anyone have any experiance making a lead acid battery?
Lead acid is a bit cheaper to build but we are looking at Lithium for the weight savings amother other advantages. Right now we are just trying to set a target amp/hr requirment.
Does anyone have any experiance making a lead acid battery?
The battery makers have spent years and many dollars to get good performance out of there battery's.We are talking about manufacturing lead acid batteries in house so we can save costs and be able to custom fit cells-->packs to the vehicle being converted. This is going to be more than just a hobby one time deal.
Maybe the group that want to make their own lead-acid battery are making an electric car like this:
Hey where did you get the picture of our design so fast? Kidding, but point taken. If we had it figured out, I wouldn't be asking you guys for answers and opinions.
Lithium is of course our desire but we are trying to come up with a lower cost option.