Batteries draining at night, runs good all day
12-11-2012, 07:01 PM
#16
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Location: Pemberton NJ
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When they tested your batteries did they disconnect them? or at least one of them? If not you could have one good battery masking a bad one since they are hooked together in parallel.
12-06-2016, 07:22 PM
#17
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I noticed that someone said that 13.2 volts means your battery is proper. This is incorrect. 12.7 to 12.75 (theoretically 12.8....but I've NEVER seen a 12.8....ever) is the no load voltage of a GOOD and FULLY CHARGED car battery. And it goes down from there...depending on if it's bad...or not fully charged. By the way,...you "might' get a 13.2 volt reading if you've just shut your truck off and not let the batteries get back to their normal state.. Give it at least ten minutes.
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