Type: Power Inverter Dimensions & Weight: 5.15" x 3.86" x 1.81" / 0.77 lbs. Features: Full Output Power - Other inverters have reduced output over time. 2 AC Outlets - 1 USB Port High Surge Cooling Fan Ground Fault Sensing Overload Protection – Inverter will automatically shut down if load exceeds inverter rating. Smart Surge Control - Inverter will attempt to start loads above the continuous rating for up to 10 seconds. Voltage Protection - Whenever the input exceeds 15 volts DC or is less than 10 volts, the inverter will automatically shutdown. Short Circuit Protection - Automatically shuts down until short circuit is removed. Thermal Cutoff - Automatically shuts down if internal temperature exceeds safe design parameters. 20 Amp Power Requirement - at rated output