I created this battery holder mainly because I needed a way to separate charged batteries from exhausted ones. It's designed for AAA batteries with a diameter of 14.3mm. The model's holes are 14.7mm to compensate for the 3D printing "shrinkage" that usually happens with these kinds of shapes. If your 3D printer doesn't have this problem, you probably want to edit the model first to adapt the holes to yout printer's capabilities.

The carved logos have a depth of 2mm, depending on your printer, you might need to use supports to properly print them.