The EVO II Car Charger is used to charge the aircraft battery through a car's cigarette lighter socket. The EVO II Car Charger provides an extra USB port, which allows you to charge your remote control at the same time. This charger is designed with under-voltage protection, ensuring the car has enough voltage for starting. In addition, overheating protection of the charger will automatically stop battery charging if the temperature of the cigarette lighter socket exceeds a certain value.