Wagan TrueRated(TM) 400 Watt 5V 2.1 Amp Continuous Power Inverter with USB Charging Ports - EL2003-5 Portable power inverter provides 400 Watts of continuous power and 1000 Watts of peak surge power Power or charge a laptop, cell phone, MP3 player, digital camera, portable game player, power tools, and more Two grounded AC outlets Two 5-Volt, 2.1-Amp USB charging ports ideal for charging iPad & other tablets plus Amazon Kindle & other e-readers Short circuit and overload protection, low input power shutdown