In an ideal world you can compute that. Say you have a battery rated at 100 AH (amp hours) and the battery is depleted to 75%. If you have 5 amp charger, it would take 5 hours to charge it. (25 divided by 5). Unfortunately we don't live in an ideal world so that would be very approximate.
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Work is for people that don't know how to fish!
Bill H. PTC USN Ret
Chesapeake, Va
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