My first post in this forum as I have recently become interested in lighting and bike generators. I'm trying to develop a self-contained charging system for commuting and touring incorporating a dynohub, the new Busch & Muller E-werk. a Niterider Minewt USB Plus light and battery, and an Iphone. My thought is to use the E-werk to recharge the Niterider battery. The battery will be used to power a helmet-mounted light and also to serve as an external battery for the Iphone.