I created this Ryobi ONE+ battery holder after seeing one created by MichaelAtOz. I started from scratch with a new OpenSCAD program so this design is not based on MichaelAtOz's design. This version has a tighter fit, larger mounting hole (for a concrete screw), and thinner body. I have included STL files for the holder, the wedge, and a combined STL with the holder and wedge.I recommend printing this solid (90% fill) with thick shells. Because the holder is 1.5mm thick this won't use much material. My build on a da Vinci 1.0 used ~5 meters of 1.75mm filament. If you want the electrical connection openings from sagging on top you may want to add supports. Since the supports will only be in the 3 openings it shouldn't waste much material.