18650 Capacity Tester Case

Inspired by [this thing](https://www.thingiverse.com/thing:6767618). I decided to design a case for [smaller version](https://www.aliexpress.com/item/1005006269332956.html) that I have. You would need to print one *top* and 4 *button*s. 4 M3x19 screws with nuts are required for assembly. Also, I recommend to glue a strip of fabric for easier battery extraction. But don't repeat my mistake and don't cover QR code with it.

As in original thing, you can insert a piece of transparent filament into holes for light diffusion