This convenient mains inverter is designed to provide you with basic mains-charging, laptop charging, and other low-power mains applications. It boasts all the safety features you need like overload and input reverse polarity protection, and is plug and play via your vehicle or boat cigarette lighter / charging socket. The 450W surge rating helps provide enough power for devices requiring a little more power to turn on, and 150W is plenty of power for most devices. Perfect for charging small appliances.