Thank you for the review! I tested the lid issue (pushed down without batteries) on 3 different printers and, it's tight, but I was able to remove them each time which suggests the challenge may be with your printing environment. This model, designed with a 0.1mm tolerance for the friction fit, has been successfully used on other platforms for several years. Could you share a picture of the seams on your print? It would help to identify and address the issue you're experiencing. Here to help!

I was unable to separate the parts. In the end, I was left holding the bottom because the walls cracked. I will recalibrate and try again, this time increasing the wall thickness so that the walls do not crack so easily.

Of course, I immediately had to print a second one. For this, I set the scaling in the slicer to 101% and the larger batteries now fit perfectly. I scaled the lid to 101.5% and it also opens and closes cleanly on my printer. I need to change the seam position because the print start is clearly visible, but I'm sure there's a solution for that (see photo). Adjusted settings X1C / Textured PEI Plate with PLA Matte: Smoothing Type: Only top surfaces / Linear Wall Lines: 6 Top Shell Layers: 7 Bottom Shell Layers: 5 Infill Density: 20% Every printer has its own tolerances – with these settings it worked wonderfully for me. I hope my comment can help someone. Thank you very much for the great model.