It is a modular battery case.
Insert the desired socket and use it!
M3*30mm or more bolts and nuts are required to assemble the hinge.
referenced the design from https://www.thingiverse.com/thing:4757317
| 2032_Socket.STL | 10.6KB | |
| AAA_Socket.STL | 121.8KB | |
| AA_Socket.STL | 33.5KB | |
| Socket_Contaner.STL | 83.1KB | |
| Socket_Contaner_Cap.STL | 129.4KB | |
| Socket_Contaner_no_nut_hole.STL | 65.9KB | |
| Socket_Level_brick_V2.STL | 21.0KB |
