Car charger is a portable charging device that provides in-car power support for mobile devices, and is widely compatible with smart phones, tablets, navigators and other electronic products. It is powered by the cigarette lighter interface in the car, and supports multiple interfaces such as USB-A and USB-C. Some models provide fast charging function to ensure fast charging of equipment during driving. The built-in smart chip can automatically identify the device and provide multiple protections such as overcurrent, overvoltage, and overheating to ensure charging safety. The car charger is compact and lightweight, suitable for self-driving, long-distance travel and other scenarios, providing users with stable power protection and improving travel convenience.