Quote:
Originally Posted by MWB
the battery came off of the charger at around 13v we tested it.
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Unless it sat for a few hours first, or you put a small load on it for a few minutes before you tested it, you were measuring the battery's "surface charge". That tells you almost nothing about the actual state of health of the battery. A badly sulfated plate, or even a broken one that only has a small fraction of its bulk actually connected, can still be charged to full voltage. It just won't have anything like the capacity it should.
A stack of hearing aid batteries can also read 13v, but they won't run a robot.
Introverts can be good leaders too, we just lead differently. - Ari423 [more] 
28-03-2010, 20:45
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