Alternatively you can get the Øm3 bike light with a USB-plug instead of our waterproof plug. You can run this bike head light with any other external 5V battery which has a 2A output.
We recommend powering the USB-version with our nøtstrøm/xt battery, which regularly will be delivered with a Y-cable. The Y-cable includes a USB-A input which allows you to charge any kind of mobile USB device through nøtstrøm/xt. You can use this port to connect the USB lamp and operate to full extend.
Please note: you can simultaneously charge an iPhone and operate the USB lamp with the Y-cable. When doing so, the USB lamp can be used to 3rd level only. In other words: you can charge your Smartphone and power the lamp simultaneously on all modes except Ultra High Mode!