How To Do A Battery Test. After plugging the power cord back in click on the Start Battery Test button. A list of diagnostics and component tests should pop up.

How to Do a Battery Leakage Test Using a Voltmeter. That means your battery is fully charged. Before you begin testing make sure the ignition key and all of your vehicles lights are off.
A list of diagnostics and component tests should pop up.
Any lower than 10V then that means the battery has worn out. Turn off the ignition and any accessories like lights or the radio in the vehicle. It also has a switch that turns on a very low-resistance dummy load. If your battery is lower than 12 volts make sure you dont have anything on in the car by accident.
