Review on High-Speed Motorcycle USB Charger Kit - MOTOPOWER MP0609A: SAE to USB Adapter for Charging Phone & GPS On-The-Go by Jason Flores

Bought to charge my devices while cycling. The description says "waterproof lid" and yes, as far as I can tell, the lid is waterproof. However, due to the careless fit of the cap on the USB connector body, the device as a whole is NOT waterproof. I really like the design because the USB connector fits a bit into the case so it will be very difficult to get the connection wet if you install the device according to the instructions, but if you put the cover on you'll soon have one Store of water that ends up rising high enough to cause a short circuit in the charger. It's a shame because otherwise it's really good. As long as you don't get wet, you're fine.