Modular Battery Box

3 different grid sizes:

13 supported batteries holders:

Key information:

Lock has to be printed first. While printing lid, job has to be paused on given layer. Lock has to be placed manually, then print can be resumed. Lock should remain in locked state, so it will not deform from the bed heat.
Holders are locked in the grid, they cannot move even if the box is not filled.
Batteries are hold firmly when the box is closed, they cannot fall out when flipped up side down.
Lock that clicks when locked or unlocked, the box cannot unlock on it's own.
Button batteries are also hold with holders that click.

Notes:

Printing with 1 wall loop leads to loose grip on holders - I have tested it a few times and do not recommend.
To reduce amount of filament, I might suggest to reduce infill density.
I do not recommend deleting unnecessary plates, print pauses for locks are assigned to bed plates instead of models.
I printed with PLA, however PETG should work too.
I would appreciate suggestions and opinions - expect to make this box work with gridfinity - I am already working on it.
No print support needed.
I suggest to print lid and lock in 0.1 mm layer height.