Dewalt 18v/20v lithium ion battery mount

Printed with PLA 0.2mm layer height on an ender 3 s1 pro. Print in vertical orientation without supports. I used 15% infill in my prints. 

I've tested this on a DeWalt powerstack and DCB203 20v 2ah battery.

This version slides on and off the battery easier. 
* removed 1 mm of hieght from the surface of the grooves and 3mm from the catch
* added fillets to make some intersections less prone to cutting

This version slides on and off the battery easier. 
* removed 1mm of hieght from the surface of the grooves and 3mm from the catch
* added fillets to make intersection less prone to cutting