Cartman 110V AC outlets and USB 2.1A 150w power inverter, car DC 12V to 110V AC inverter, laptop charger notebook USB adapter Converts 12-volt DC power from a vehicle battery to 120-volt AC power. Simply plug the inverter into your vehicle's DC outlet, and connect your device to the inverter's AC outlet or USB port.providing on-the-go household power in the vehicle. One 110V AC oulets and one USB ports 2.1A Short circuit,overload,overheat,low battery voltage,over battery voltage Protections, Full protection features and Auto-shutdown keep your appliance and car from damage of overheating, over load , low load, short circuit, low voltage and over voltage. High tech achieved: Input & Output Isolation avoid electric shock ! Built-in fuse & cooling fan. Resum working after protections. For DC12V and Car ONLY, not applied for DC24V and airplane use !