This is a 18V battary pegboard mount for Makita battery.
It was designed for a metric prgboard with oval holes (please find the attached picture of the supported pegboard and it's measurments).
Other then the printed parts you need 4 X M3x6 screws (There are several of these in the prusa spares bag).
Simple PLA with 15% infill is more then enough.
I am using supports of the overhangs but you can print it without, it's more a cosmetic then a functional purpose.
I am adding the .3mf and .gcode files with the supports.
The author hasn't provided the model origin yet.