Plug this Auto Jumper into the accessory socket, and in 10 minutes you're ready to go! Safe, easy, no hassle, and no open hoods or jumper cables needed. The powerful Ni-Cad battery (5Amps, 14.5V) allows you to jump start the vehicle from inside the safety and warmth of your car without jumper cables. Recharge from your car battery while driving 30-120 minutes or with the available AC adapter accessories. Keep your car's clock, radio, alarm, and your car's computer memory while you change your battery. Unaffected by extreme weather conditions from -5°F to 120°F. Built-in trickle charge protection. Dimensions: 8.5"L x 2.25"W x 2"H. Cord length: 13".