Stop in for a cup of coffee

I've always seen 12.7 as the fully charged around 13.2 as the float or surface charge, like right after shutting off the engine. (Talking older vehicles not stuff with delayed lights on etc.)

We had a thread going on various things that can and do go wrong when using an alternator to charge a discharged battery.

Unfortunately we had member here do that very thing recently.
At least it didn't send battery acid flying. But he's still got a bunch of damage in the wiring to fix.
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