Although there are many models available, I didn't find one quite the same as this. The Modular Battery Storage system works as follows:

• The starting point is a box and a lid. The dimensions are 143.5 mm * 143.5 mm * 59.8 mm.
• The boxes can be stacked on top of each other.
• Each box can have 4 inserts. The inserts can be put in corner and will stay there, so no need to print all 4 if you don't need them.. pick the ones that make sense for you. So far, I have created 6 inserts:
  1. AAA insert: insert for 25 AAA batteries
  2. AA insert: insert for 16 AA batteries
  3. Botton cell insert (mix): 4 * CR2016, 4 * CR2025, 12 * CR2032, 10 * LR44
  4. CR2032 button cell insert: 24 * CR2032
  5. CR2032 + CR2025 button cell insert: 12 * CR2032, 15 * CR2025
  6. LR44/A76 button cell insert: 28 * LR44/A76
• Each part can be printed without support.

In the attached .3mf file, you will find plates with all of these inserts and the box of course. I also added STEP files for each part.

If you like this sytem, please let me know. I designed inserts for the batteries I'm using around the house, but I'm probably still missing some common ones. If you are missing an insert, let me know in the comments and if it's indeed commonly used, I may design one for you. A boost is always appreciated as well :)