Apply the load as specified by the tester for 15 seconds, or as specified by the load tester manufacturer. A good battery should maintain voltage above a specified level during the test.

When your car doesn’t start, often the battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best practice is ...

Prepare to Test the Battery Unless your vehicle won’t start or you already suspect battery issues, wait at least a few days without driving to test your car battery.