Mighty Jump Portable Car Battery Jump-Starter. The Mighty Jump as seen On TV safely charges your vehicle battery through your car's DC accessory port. Start your car from inside in just 10 minutes without endangering yourself or your loved ones. No more raising the hood in the cold or flagging down strangers for help. When the Mighty Jump is plugged into the cigarette lighter it transfers power to the car battery, using the interior wiring of the vehicle fits easily in cup holder while in use. Small enough to store glove box or center console. Designed for 4,6,8 cylinder cars, light trucks or SUV's that operate on a 12 volt electric system. Cord approx. 3'L. Approx. 3.13" diameter x 3"H. Mighty Jump rechargeable emergency jump-starter.