The ACMobile 200SI Inverter converts 12v DC automobile power to standard 120v AC home power - up to 200 watts. Simply plug the inverter into a 12v DC outlet (cigarette lighter outlet) up to 150 watts or use the included battery clamps for loads of 150 to 200 watts and you’re ready to go. It is equipped with 2 (two) 120v outlets for running multiple devices at the same time, and also has a convenient USB port for charging cell phones, MP3 players, and digital cameras. It has full-time surge protection that guards against power fluctuations from vehicle startup and shutdown, and has an ergonomic slim-line design with a small foot print. Its universal 2-in-1 auto/airline connector can power your electronics on the road, in the air, or on your boat. It’s the perfect device to power all your mobile/consumer electronics, small appliances, emergency equipment, and portable tools.