I have some 12 volt batteries that were used in alarm systems. They
apparently still have some good life in them. My question is about charging
them. I was told that I can just take a 12 volt DC wall wart and connect it
across the battery= pos to pos or pos to neg??= Is that true? Do I need to
be concerned about current ratings vs. ampere hours of battery? Is there a
way of checking the ampere hours of the battery if not stamped thereon?
Thanks-
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