Remixed to fit the seldom used CR 1/3N battery type, which should be very close to the DL 1/3N battery type as well. Voltages of those batteries should be around 3v but some go up to 3.7v. This will easily hold a single battery or it can hold up to 4 batteries within the handy carrying case.

Printer: Bambu Labs X1 Carbon
Filament: PLA or PETG will work fine.
Layer Height: 0.2mm
Wall Loops: 4
Top Layers: 4
Bottom Layers: 4
Sparse fill: 15%
Sparse pattern: gyroid