If a vehicles battery is up to capacity and the engine is running so the alternator is charging, will the battery overcharge from the constant current running into it?
Reason I ask is one of my vehicles was taken on a long trip and the battery was empty at the end (wondered why the smell of sulfur was coming through the vents all the way) I topped it up and its been fine ever since and I'm buggered if I know what caused it. Thats the only thing I can think of.
Battery was brand new a week before the trip.
Oh and theres 14.4V flowing into battery