This is a modified version of packout hangers from blahblahblahresearch. I wanted these to have the recess for the charger's base feet to be 90 degrees from the original design and far less tall so that the charger is more stable in the wall orientation. This has been tested with the Milwaukee Rapid Charger (48-59-1808) but should work with any Milwaukee combo (M12/M18) chargers.

Note: I found that an 8-32 x ½" screw with a washer on the top with a nut on the bottom will work perfectly and let you tighten down the screw as the hole in the charger holds the nut from twisting.