Gridfinity 18650

A 1x1 gridfinity bin that holds 4 18650 batteries.It was made in openscad, here's the Github repo if you want to modify: https://github.com/glowcouch/Gridfinity18650. There's two versions, a 3 unit high block, and a 4 unit high block.You can print it with pretty low infill I used 2%.