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 ...

It's also important to know how much your 12V battery is drained before charging. Invest in a multimeter to monitor your battery voltage. A fully charged battery should read around 12.6-12.8 volts.

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.