Jim, I have heard this point mentioned often, but do not agree with it.
If memory serves me correctly, when you use Nodal analysis, the battery is an open not a short.
With that said, the current may be cut in half when using parallel packs but the effective resistance remains the same.
I am going on 25 year old memory cells and could be wrong, but that is how I remember it.
Packs in parallel will reduce the current by half, not reduce the internal resistance by half.
If wrong, I do stand corrected.
ORIGINAL: GeeBeeJim
Impedance is a very important, but often ignored point. It determines just how much of a load your pack will accept without browning out. And yes, running parallel packs cuts impedance in half. IE - Two 10 mOhm packs in parallel equals 5 mOhms.
FYI -
http://www.hangtimes.com/index.html is one of the few battery vendors that list impedance. The lower the better.
> Jim
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