When an AC wall outlet isn't available and the battery in your device is depleted, a portable power inverter is a great option. Convert 12V DC from a vehicle battery to AC power. Portable power for charging and operating multiple devices at the same time in your car, truck, boat or RV. Features a convenient cigarette lighter adapter plug. Just plug the DC input jack with convenient 3-foot cord into the 12V cigarette lighter socket in your vehicle, press the on/off switch, and it is ready to operate. A built-in ventilation fan keeps the PowerVerter's interior cool during extended use. 400 W AC Inverter with USB Charging. For Device Type: Mobile Devices; Adapter/Charger Type: Power Inverter; Power Source(s): Vehicle Outlet; Connector/Port/Interface: (2) AC Outlets; (2) USB.