The alternator is a device that keeps your car’s electrical system running once the engine is on. It’s essentially a small generator that converts mechanical energy into electricity, bolted to the ...

Jump-starting a car means transferring current from a live battery to a dead battery by creating a circuit to charge the battery. After jumping a car, it’s important to keeping it running for a while.

If your car won’t start, here’s how to get on the road again without relying on a passing traveler with a set of jumper cables.