How do i check if my alternator works using an AVO meter?
Car battery going flat after eight hours disconnected battery does not help therefore may not be charging properly. I own a digital AVO and want to check the alternators output
Right, Measure the battery voltage.
Turn on the head lights for a light load.
Using the VOM, set to DC volts, should display ( ~ 14V, 15V or so) when the engine is running, and about 12.7V when not running. 11.7V is a dead