The Wagan 400-Watt Power Dome EX is a powerful portable power source designed to provide AC and DC power and functionality wherever you need it. Built around a rechargeable 18 amp-hour sealed lead-acid battery, the Power Dome EX provides enough jumpstarting power to revive all but the largest of car batteries, while its built-in 260 PSI air compressor can be used to quickly inflate car tires and sports equipment. It contains one DC outlet and two grounded AC outlets which utilize the built-in 400 watt inverter. Additional features include: heavy-duty 6 gauge / 24 inch battery clamps, a 5-LED work light, a USB power port, a built-in AM/FM radio, an audio output jack and more.