Full Case for Cheap 18650 Battery Capacity Tester, No Supports Needed

The tester is available from many different places with different names for under $10. This one is labled HW-586
The case protects the PCB but exposes the USB input and the battery / resistive load ports on the side.
The bottom of the case has the fairly popular supportless hole trick applied (two one layer high rectangle cutouts) so no supports are needed to print.
The buttons are exposed through three extensions you pop in the case before closing it, and work just fine with fairly crooked buttons as the PCB assembly probably has.
The LEDs are exposed through the top, with labels as good as FDM with a 0.4mm nozzle will do.
The screw clamp downs for the battery and load input/output are exposed through the top so you can still attach or remove them after assembly.

4x M3 bolts at least 6mm long are required for the bottom to connect to the top, I used 10mm button head but socket head bolts will also fit. Or just use your favorite glue, it's not mechnically important.

Print instructions

Use 0.2mm layer height for the bottom so the supportless hole trick works on it but that's the only piece layer height dependent.
Lower heights are better for the top cover since it has text that's already pretty small for FDM.