A jump start uses a working battery to supply enough current for the starter motor, then lets the alternator recharge the ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Recently, I saw a post on social media about using a tool battery to jumpstart a car.

Just imagine: You're pretty sure you have a dead car battery that needs replacing, and you want to take a look under the hood to see what's going on. But thanks to your modern car's electronic system, ...

All modern vehicles rely on a battery system to help get the wheels moving. For most cars with internal combustion engines, these devices are 12-volt batteries. The vehicle depends on the battery to ...