While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

The reality is that like almost every component under the hood, a car battery has a finite lifespan and will conk out on you eventually. Weather conditions, corrosion, electrical shorts, charging ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A dead battery happens to all of us. We take care of our cars and are diligent with ...