Odd electrical question

[meyrick]

Been trying to figure this one out for days, but I can't find any useful info:

Is it ok to wire up two 12V sealed lead acid batteries of different capacities (amp hours) in parallel and both use and charge them as a single unit?



Paul.

[stinkwheel]

Not sure. I would have thought using batteries in paralell would work ok. They use a big line of batteries in coaches and buses.

Not sure about the capacities though?? I know when you charge batteries in series (like in a radio controlled car) they only go up to the level of the lowest capacity cell in the pack.

What are you trying to do?
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[alains]

in parallele yes , the charging amps will split in 2 separate intensity function of each capacity . ex : if you've got a 12 Ah and a 8 Ah with a total charge courant of 4 Amps , the 12 will charge at 2,6 A & the 8 at 1,6 A .
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[meyrick]