Stanley FatMax Battery Mockup

Disclaimer: although this is already a working prototype, it is still a work in progress, mainly improving ease of print.

I have more tools than batteries and hate leaving the connections exposed when I throw a tool in the toolbox, so I started designing this mockup.
At first, I'm trying to make it as close to the original batteries, because that works, when everything is fully functioning I might simplify it to save on print time and materials.
It's made of three printed parts, two M3x10 hex socket screws and a 8mm diameter spring cut to 21mm length.
Another possible idea for the future is making distinct versions, for example, the jigsaw one can have storage for the blades and so on.

Update 20/06/2021: I've added the files for V1.7, it is meant to use less supports than V1.5. I'm currently printing it, so it is untested, but V1.6 was quite similar and worked.