Those plug-in cables will never be connected with reverse polarity, but they might not be able to carry enough current to actually crank your engine. Enter the Michelin Smart Jumper Cable.

A control box located inline gives the Smart Jumper cables a number of safety and convenience features. Antuan Goodwin/CNET. We've already shown you how to jump-start your car with standard jumper ...

The Mychanic Smart Jumper Cables ($25) include the brilliant feature of reverse polarity protection. Live positive to dead positive, live negative to ground—that's the car-jumping wisdom that's ...

The Mychanic Smart Cables are 12 feet long, allowing you to jump-start a car in a variety of situations. The cables are made of 6 gauge wire, with support for medium duty applications.

Beginning this fall, Michelin Smart Jumper Cables are available in North America at auto supply retailers and mass merchandisers for around $40 (U.S.). Visit www.michelinsmartcables.com for store ...