【Durable Shell】Thickened shell, excellent heat dissipation comes from the design and materials, the surface bump design + shell effectively improves heat dissipation, thickened shell, heat dissipation and compression performance are greatly improved. 【Multiple Protections】The cooling fan prevents the vehicle power converter from overheating, saving energy and power. Overload protection, output short circuit protection, overheat protection, input low voltage protection, input overvoltage protection, extend the service life of the equipment. 【LED Screen Display】The LED screen displays the input voltage and output voltage of the battery. Lightweight and compact, it is perfect for vacations, camping, and work trips. It can be plugged into almost any 12V vehicle power outlet, providing charging possibilities anywhere. 【Wide Application】Can be connected to car/battery/solar, etc., widely used such as mobile phones, laptops, lamps, digital cameras, TVs, CD players, DVDs, electric fans, power