This is a great design! The batteries fit nicely into the case (not too loose, not too tight). The lid snaps on and locks the batteries in their case securely, but also allows the lid to be removed without too much effort. I printed this in red PLA.

Beautiful design! I printed this in black PETG+. This is a great accessory for my printer and love the looks and aesthetics of the design. It provides both form and function. I love it!