Draw AC power for tools and appliances from your vehicle with the Energizer 400-Watt Power Inverter. With a wide range DC voltage input from 11-Volt DC to 15.5-Volt DC and pulse wave modulation technology, you can power up more efficiently. High and low input voltage alarm and shut down features protect the inverter and electronics plugged into it. Overload and short circuit protection and shut down systems ensure safe tool operation . Includes USB charging port.