Quote:
Originally posted by BrianG
So, are you saying lipos maintain a relatively constant voltage (+/- 0.5v) regardless of charge state?
Yeah, I have an electronics/electricity background, but haven't read enough about lipolys, except all the bad stuff. I know the lipos are paralleled very often, that was what really prompted the thread. Even though my main thoughts were about lipolys, the discussion can also be about other battery types.
EDIT:
After submitting this reply, I got message saying my post count reached 50 and I have a prize! Wow, that's cool!
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Lipos don't maintain a certain constant voltage, unless you consider + or - 1.2v to be constant (I wouldn't). But when paralleling 2 cells (or packs), they should be within 0.05v of eachother to prevent a large charge/discharge condition between them.
Quote:
Originally posted by BrianG
Series increases voltage. The product of current and voltage is power. And capacity is current, which increases when batteries are in parallel.
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Right, but cells of different capacities should not be put in series with eachother. The lower capacity cells will reach 3v before the higher capacity cells, and their voltage could continue to drop to unsafe levels. I realize that no two cells will be able to maintain the exact same capacity, but at least if the the cells are stated to be the same (by the factory), then the tolerances should be low enough as to not cause any problems with overdischarge.
P.S., congratulations on your 50th post! The "prize" is a 5% discount on your next order through RC-Monster. You have to contact Mike to get this discount when ordering, though.