Mini jump starters for your car

Claimed to be the world’s smallest jump starter, the Antigravity Batteries Micro-Start XP-3 is powerful enough to start your car in an emergency, yet small enough to fit in your pocket. It includes a USB port and various adapters to charge tablets, phones, music players, cameras, and other electronic devices. And, it has a built-in LED flashlight to help you find whatever it is that needs a charge.

Just introduced at the Specialty Equipment Market Association (SEMA) show in Las Vegas, the XP-3 measures 5x2.8x1-inches, and it weighs in at a mere 12 ounces. A company representative at the event told us it can be charged in a couple of hours on either 120-volt household current or a 12-volt car power outlet, and it will hold a charge for up to six months. (Learn how to maintain a car battery.)

For somewhat greater needs, the slightly larger XP-1 is still a relative featherweight at six inches long and 14 ounces, but it adds the capability to charge and power laptop computers and includes a wider assortment of adaptors.

Both include a carrying case and are available at powersports retail stores now. The XP-1 carries a list price of $160, and the XP-3 can be yours for $130.

More From Consumer Reports

See our last portable jump starter test, and learn how to jump-start a car.

—Jim Travers

Copyright © 2005-2013 Consumers Union of U.S., Inc. No reproduction, in whole or in part, without written permission. Consumer Reports has no relationship with any advertisers on this site.