Compact CR2032 Coin Cell Holder

A very compact CR2032 coin cell holder for limited space applications. It was initially intended to be used in a PS2 slim (SCPH-7500x) to replace the clock battery that was initially a pre-made cell with wires, JST connector, and heat-shrink wrapped around. However, even this very compact setup ended up not working for that use case, but I'm sure it could be used in other situations as well. This was to avoid needing to make or get such a cell each time and just get a standard CR2032 cell from the store and slot it in. In the end as this did not work, I just ended up removing the spot welded wire contacts on the previous dead cell and press fit them with my new working cell and wrapped it all in Kapton tape.

This holder would be best printed in resin, but a small nozzle diameter or low enough layer height on an FDM machine would work too. The tolerances may be a bit too loose on resin though so you may need some tape on the sides to hold the lid in place. Otherwise, it would ideally friction-fit together. It has two 1 mm holes for small metallic contacts for the battery such as male DuPont connectors or a paperclip that can then be connected to whatever you need to power. I ended up using 2 male DuPont wires as contacts and for a bit of extra pressure to ensure good contact, I added a thin sheet of metal shielding from an old router on the bottom between the contact and cell. I then hot glued the wires into place and taped the lid to fix it in place.

This model was made using Fusion 360.