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Old Oct 05, 2008, 11:23 AM
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Germany
Joined Dec 2003
5,604 Posts
Well, just compare a charge and a discharge graph.
While the resting voltages might have a considerable difference, as soon as a pack is charged, its voltage rises rapidly, and the voltage of a discharged pack decreases rapidly, this making the actual voltage difference of 2 connected packs fairly small.

I once connected a fully charged and a fully discharged pack (100% charge difference), and the current was about 2C initially. It became much less after 30s, and after 2 minutes, it was only a couple of hundred mA.
With a max of 50% charge difference, the current should be even lower.

Cheers,

Julian
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