Dual Battery Power Box (AAA for now)

thingiverse

This is a simple battery power box. AAA for now, Might include AA and 18650 later, It uses minimal plastic with the walls being 0.8mm, two layers thick. Printed at 0.2mm layer height and 20% infill. No doubt you could go taller on layer height. To install, strip two wires and make a small loop and insert into holes. Snap your batteries in. Depending on your battery tolerances, the top should be flush. Wrap the wedge with aluminum foil and press into the end. To uninstall, use screwdriver to poke out the wedge from the bottom. Then pry out batteries one by one. You can make your own wedge to fit the tolerances of your battery and wires. My use case is series, but it's not hard to use this for parallel If the holes print out too small, drill them out. If your battery isn't fitting flush, try pulling the top and bottom slightly higher.