Every car needs a battery to help it start and power its electronics. Here's how many volts this all-important component ...

You try to turn on your car, and it just won’t start. Maybe the dashboard doesn’t even light up. A likely cause: The 12-volt battery is dead. All cars lose a little battery power when parked. If you ...

If you've been driving long enough, this scenario might sound familiar: You get into your car, turn on the ignition, and then... nothing. Your battery is dead, and you're probably going to be late.

You're running late, your car won't start, and you're standing there with jumper cables and a charger wondering –– do I have to disconnect the battery before I juice it up? The short answer is no, you ...

There’s only one way to answer the question, “Is it my battery, or something else” when your car won’t start: Hook up the best car battery tester and get a readout of what’s going on. Skip the ...