Hi,
I remember reading an old post here about testing your car's battery with a voltmeter. The procedure was, IIRC, to measure the lowest voltage during starting the engine. The only problem is, I can't remember what voltage was good and what voltage was bad. Can anyone remind me the correct way to test the battery?
I've tried to look through old posts but can't find the post I was looking for. I've looked on google and I am finding many sites which talk about measuring the voltage without starting the car; I thought these tests were not useful?
TIA