If you run a dynamo hub on your commuter or tourer and are looking to charge a USB battery pack then you need a power inverter at some capacity. The Cinq Plug5 Pure charges at a controlled current, with a 700mA max output and features an aluminum twisting door to protect the USB-C port from dust and water when not in use. While the Plug5 Pure is not in stock at Cinq, you can however order them from your local dealer.