Autos: battery test
Self-tutoring about car maintenance: the tutor mentions a resource.
I was checking over a car then thought about the battery. I decided to refresh my memory about how to check it.
What I seemed to pick up is that 12.5V or more is good when the car isn’t running, while 13.7V to 14.7V is good when the car is running.
Source:
Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.