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Old 06-03-2007
Jony Jony is offline
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Join Date: Jan 2007
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Quote:
Originally Posted by mark christopher View Post
dont want to point out the obvious if a manufacture says thier charger can do 12 cells it has to do it.
if both packs are the same capacity/type ie gp 3700 and they are discharged and equalised the same you will have no more trouble than charging 6 cells in one pack
I'd really say be very careful if you're going to try this. While what you say is kind of true, it's not exactly true. Even when the packs are new all gp3700s don't have the same capacity/peak voltage. And it gets worse as the cells wear out. Imagine you take two packs that were identical when new. Run one pack for a few hundred cycles at high current and it'll lose capacity (the cells wearing out). Now if you try and charge those two packs together the worn one will overcharge before the new one is full.

Like I said, if the mismatch is small, you'll be ok. After all, cheapo unmatched packs don't explode when you charge them. But if the mismatch is bigger you're inviting trouble. Unless you have the tools to know whether the packs are well matched I'd say don't bother trying.
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