Digital Display】: This 200W features a digital display that provides real detection. It operates at a normal v of 11.6V-14.8V after starting and 11.6V-12.8V when not started, ensuring your device's safe. 【Efficient Cooling System】: Equipped with a powerful cooling fan, this car ensures rapids heat removal to prevent overheating during use. Its quick evacuation of heat conduction guarantees safe and reliable operation