14.6v from alternator [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: 14.6v from alternator


mattydmax
12-05-2009, 04:25 PM
Is this too much? I am electrically challenged!

Horsehaulin
12-05-2009, 04:30 PM
IIRC 14.4 is the ideal number for a charging system when the engine is running at idle. That is from my big stereo days, so I could be a little off since that was back in '96

mattydmax
12-05-2009, 05:21 PM
Have a battery that spilled a little so just starting with overcharging and moving forward from there. Thanks.

BombDocDiesel
12-05-2009, 05:40 PM
You're good. Mine run 14.5 or 14.6 volts.

Brad92
12-05-2009, 08:04 PM
In my 2002 GMC it runs atleast 15, for years with the same old battery. I haven't checked it out with a good voltmeter (relying on the factory gauge), but it hasn't done anything bad yet so...