Ryobi USB Power Supply

thingiverse

If you live in an area prone to power outages caused by above-ground power lines, it's useful to keep your cell phone alive during these situations. I have Ryobi power tools using One+ 18V batteries that are always charged, so when Ryobi stopped selling a USB charger, I made my own. You will need some contacts - you can use the Keystone Electronics 204 or the Digikey ones, and a USB socket that can handle 12V or 24V input - like the one on Amazon. After doing a bit of simple soldering, you are done. This design comes in two parts: a bottom plate and a top (tower) piece. Attach them together with cyanoacrylate glue or epoxy. I remixed both from the thingiverse starting point. Make sure to check out Chris Nafis' excellent connector cover for this design. It covers the electrical parts, keeps the battery clips from sliding around, and makes it look tidier; attach the cover with hot-melt glue, and you can remove it later if you have issues or need to re-solder the clips or whatever.