LST 200W Car Inverter Converter, Car Charger, Converts DC12V to AC100V, 4 USB Ports, QC3.0 Quick Charging, 2 AC100V Outlets, Modified Sine Wave, Cigarette Lighter Socket, Compact & Simple R10/ This is considered essential for use in environments without a power supply (AC100V), such as power outages, camping, and car camping. It converts DC 12V direct current power from a car battery to a more stable AC100V alternating current power, allowing you to power electronic devices. Rated output: 200W, Maximum output: 250W, Input voltage: DC12V, Output voltage: AC100V. After power is supplied, the battery voltage is displayed, so you can clearly see the battery's condition. In addition, whether it is in normal or abnormal use is easily understood with the green and red LED lights. It has overload protection, short circuit protection, overvoltage protection, undervoltage protection, and abnormal temperature detection protection, and will automatically shut off in case of an abnormality. It is equipped with a temperature control fan, and the heat dissipation increases depending on the temperature. Designed to be compact and lightweight. With 4 USB ports and 2 AC100V outlets, you can use smartphones, laptops, video cameras, digital cameras, CD/DVD players, radio cassette players, TV games, iPads, electric shavers, electric razors, and other electrical appliances. Typically, the reasons for not being able to use it are as follows: The key switch on the unit does not turn on. The red lamp lights up in case of overvoltage or undervoltage, making it unusable. This product is for DC12V negative ground vehicles only. It is not applicable to 24V vehicles. If using equipment that exceeds 200W, do not plug it directly into the cigarette lighter socket in the car. Please use the connection clips for the car battery. Because it is equipped with a cooling fan, there will be a small amount of noise during use. There is no problem with use, so please use it with confidence. For safe use, when using it in a car, please be careful not to exceed a total power consumption of 300W for the electrical appliances you are powering.