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.

Do not disconnect the positive (+) battery cable first! A slip of the wrench here creates a direct short to ground. Think instantaneous arc welder. The negative () cable is the ground cable; it is ...

Your car won't start. You have a dead battery. We know, it's a pain! You'd like to pull it out and get it checked at an auto parts store or maybe even replace it—and you want to do it yourself to save ...