I thought I'd give my 57 Olds battery a voltage check with the car ignition off verses on.

Off: the battery is 12.7V
On: the battery registers 14.5V

The battery seems to be in the "Good" range with the engine off. However, I am not so sure about the 14.5V with the ignition on. Is this voltage too high or within an acceptable charging range?

 

The 14.5 is right on the money

 

Thanks for the reply citcapp.
Dan

 

With the lights and heater fan on high, the reading should be no lower than 13.5 or thereabout. 14.5 is normal as said.

 

You know, this is exactly the kind of information that makes this forum a winner.
Thank you,
Dan