Beer crate battery holder, empty version with recycle logo

As with original, for best result you should print with no infill and added walls until solid fill. I also ironed the topmost layer, for aesthetics (makes it look flatter). The base is only required for stacking (e.g. if 2 or more high). Glue it on after print. I used super-glue (cyanoacrylate) and it worked well, even with a rough texture on both faces from Bambu labs textured PEI plate. Use an accelerator/activator for the glue so you don't have to hold it in place for long.