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A jump starter can pay for itself the first time that you use it, without waiting around for a tow truck. Between the invention of the self starter and the end of the 20th Century, the best portable ...

A dead car battery is frustrating, especially when you're short on time. It can also be dangerous, depending on where you've broken down. What's worse is relying on others for jumper cables isn’t ...

Portable jump starters can squeeze an incredible amount of power into a package the size of a lunch box. The best ones will hold a charge for months so they’re at the ready in case of an emergency.

Jump starters typically have the same voltage as most car batteries: 12. The range of amps is much wider, though, to fit the gulf of requirements among all types of cars. For example, a small sedan ...