Motorcycle charging adapter with digital display, 2 USB ports and ergonomic handlebar mounting design. It features a cover made of high-quality and durable ABS material, with a protective, fully waterproof casing for maximum protection of the internal system. The smart IC technology improves charging performance and provides a powerful protection system against short circuit, overheating, overcurrent and overcharge. The 12V motorcycle USB socket is equipped with a separate on/off switch that facilitates turning the device on and off for energy saving. Equipped with a smart chip, it can detect the battery voltage and automatically adjust the output power to maximize charging efficiency and avoid unnecessary energy consumption. DC 12V USB-A output voltage: 5V/3.4A, 9V/2.5A, 12V/1.5A; Digital voltage display. Adjustable handlebar mounting ring. Suitable for cars, motorcycles, SUVs, boats and other 12V vehicles.