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It's powered by USB battery bank and a USB-PD breakout module that tells the battery bank to output 12V. I put them inside a zip-lock bag inside the 3D printed box. It's water proof enough for the sonoran desert.
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this post was submitted on 21 Aug 2026
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Where is the advantage in that outside of an actual ebike with battery?
Having a single battery and integrated running lights that are always present is convenient compared to having discrete lights on the frame that need seperate charging/replacement and need to be brought with you and stowed when not in use. At least that's been my experience. Less to charge, less to remember to bring.