> Lee,
> I know we've had this thread before (over and over!), and I agree that for
> the most part range equates to weight, but if you double the pack voltage
> so that you are drawing one-half the current from the traction pack (for
> the same power), you should get a few more amp-hours, no?
No.
If you have the same number of batteries and wire them as buddy pairs for
156 or a single straight string for 312, then the individual batteries see
EXACTLY the same amps for a given total power output.
Yes you need twice as many amps at 156V, but the current gets split in
half across each battery in the pair.
If you are using a single string of large batts for 156V or a single
string of smaller batts for 312V, then (for a given weight) the large
batts will have about twice the capacity as the small bats and even though
they will see twice the current, the ratio of amps to amphour rating is
the same.
_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev