FatShark 18650 battery end caps

End caps to turn two 18650 batteries (like the famous NCR18650B from Panasonic) into a fatshark-compatible battery that stays in the strap like the original with these "ears" (I don't know a better word for it) sticking out on both sides of the goggles' strap.

A parameter in the scad file changes between both caps for your convenience.

Used in this instructable: https://www.instructables.com/id/FatShark-FPV-Goggle-Replacement-Battery/

I know, in the screenshot I use the "wrong" connecto