A 12-volt power inverter converts 12-volt DC power or direct current to standard AC power or alternating current which allows you to run electrical equipment off your car or marine battery for mobile applications. The 3 500-Watt 12-Volt Modified Sine Wave Inverter from PowerBright provides 29.2A a no-load draw of < .2A and four 3-prong AC outlets. This inverter also has an anodized aluminum case for durability an LED display that shows input and output wattages built-in cooling fan internal 30A spade-type fuses and an overload indicator. It includes an audible low voltage alarm and will shut down in case of overload thermal or short circuit problems.