PowerDrive RPPD300 300-Watt DC to AC Power Inverter with USB Port and 2 AC Outlet Continuous AC power output: 300/500 watts; Maximum AC power output (surge): 600/750 watts Converts 12-volt DC power from your vehicle battery to 110-volt AC power Two 3-prong AC outlets and USB port with 5 volts DC output Plug directly into 12-volt port or attach directly to vehicle battery High/low voltage protection; over temp and overload protection