Size:500 Watt The Black & Decker 500 Watt Power Inverter charges via AC and USB outlets. Just plug the power cord into a vehicle’s 12 volt DC port (cigarette lighter), or connect the clamps to your vehicle battery, and enjoy the convenience of household outlets and a USB port. The 2 amp USB port allows you to charge and power smart phones, tablets and much more from just about anywhere. The inverter includes (2) electrical household outlets providing power for a small TV to watch the pre-game show or an electric grill to cook breakfast while camping. Pivoting outlets allow for two large plugs to be used at the same time. Using the inverter is easier than ever – a clear display board and icons show ideal applications and available battery power, while the built-in battery protection shows a low battery warning to indicate when the vehicle battery is running low. Plus, the over voltage 100 watts protection allows you to avoid blown fuses. ETL Certified for performance and safety.