INPUT of Cigarette lighter socket: 12V-24V Suitable for Cars Trucks RV SUV BUS This power inverter for laptop can be also used in boat. Open you new 12 volt power world. Connector size: Square Tip , Output 20V 4.5A (also compatible with 3.25A and 2.25A) USB Port with Quick Charge 3.0 is faster than common chargers. Give you a high speed.suitable for many electronic devices. Charge Smartphone, Galaxy ,Tablet, Power bank, Humidifier, Driving recorder while charging your laptop.