Also, there (at least when the Magnic thread was rampant) was no data on power output, so no way to assess whether any charging loads could be added, or if the internal generator could be switched from "lamp" to "charge." You'd have have to take on any modifications strictly on your own. There's a Kickstarter for a second generation that is supposed to have a stand light and beam pattern closer to complying to the German standard. It didn't mention an external charge function.

But it's claimed to have a very good quality of light output, and drag is not perceptible.