Review on 🔌 YONHAN Motorcycle USB Phone Charger 4.8A with Voltmeter, SAE to USB Adapter and ON/Off Switch, Dual Port Fast Charging 3 Installation Options Waterproof Quick Disconnect Plug for Smart Phone Tablet GPS by Clay Ijaz

Works well but the following considerations should be taken into account when using it on a motorcycle: (1) The voltmeter's blue LED display is almost impossible to read in bright sunlight. (2) Although it is LED. The display consumes little power, the internal electronics (reduced from 12 VDC to a regulated 5 VDC for USB) constantly generate enough heat to drain the battery. The heavier the load (e.g. GPS and phone), the more heat is produced. It is better not to store the device connected to the bike battery for more than 24 hours. (3) If the device is in a small space (saddle or tank bag), the device may switch off when overheated. Due to (2), good ventilation is required. (4) The device may turn off when it gets wet. Came back to life after drying (once). It's best to avoid splashes and showers (just like with GPS and cell phones).