Charging question
Years ago I remember checking the voltage at my truck battery to see if the charging system system was working correctly. The instructions were to check the voltage at the battery with the engine run...
Forum Discussion
pnichols wrote:ScottG wrote:
Modern charging systems are temperature compensating and will allow higher voltages.
Modern charging systems will also put out only 12.9 to 13.1 volts under certain temperature conditions.
I've seen my RV's 130 amp Ford alternator put out only this much in 100 degree outside temperatures. It was probably REALLY HOT under the hood in these outside temperatures, too. The good thing is that in these temperatures, I wouldn't want my batteries to be seeing voltages any higher than this, either.
Exactly, the temperature adjusted voltages are probably why batteries last as long as they do.
