Simple Box

Just a simple 2 parts box, here used for an external battery.
Main part inner volume: 80 x 35 x 125mm
External volume : 90 x 45 x 145mm

Printing:

No need to add supports if you place parts correctly, but feel free to use a high infill for resistance.
Make sure your printer is correctly calibrated on all axis, as the cover part slides in the main part, it should slide in, but not loose.
Correctly printed, you should hear a clicking sound when the box is closed.