21700 Battery Case

Not much to it, I needed one quick, but could not find one that would fit my need so I made my own.

I've printed it with 0.3 mm layer height and 0.45 mm extrusion width.  

Disclamer

I have no idea how safe it is, don't trust it - it's likely safer to carry a battery in this than loosely in a backpack, but, you know… it's a printed thing.