The Battery Tender 120W Power Inverter provides mobile capability to deliver electric power for AC appliances when there is no traditional AC power outlet available. With the cigarette adapter accessory, you can connect to your vehicle's 12 volt battery. That provides the nominal 12 VDC input power for the inverter. The AC output connector provides the means to run a number of traditional appliances like fans, lamps, radios, TVs, toasters, or microwave devices, and others. Also, the 2 USB output connectors provide 5 volt DC power to run other devices like digital cameras, fans, game consoles, GPSs, lamps, and more. The limited warranty period is one-year.