Battery Storage Box - Gridfinity

I needed a rugged battery box that actually worked for my setup—but none of the existing Gridfinity models quite fit the bill. So I pieced together parts from different sources, made a few tweaks of my own, and ended up with a compact, magnet-secured 5x3 box that holds a ton of batteries and fits perfectly on a 256mm build plate. This design standardizes on 8u height for secure stacking, uses no hardware, and includes magnet holes for extra stability. It took a fair bit of effort to get right, so I’m sharing it here to save you the trouble. If your needs are a little different, you can easily customize the box and holders using the parametric tools and resources linked below. Gridfinity is flexible like that—and once you get the hang of it, it’s a great way to stay organized. Gridfinity is a modular, open source, grid storage system that can be, and has been, adapted to many different applications. The sheer number of compatible 3D models is amazing. If you like to be organized, you re