I designed this mount from scratch in Onshape.
Sometimes you need the charger to mount off the wall to compensate for the depth of your power point. So I created a standard mount, 3.5cm offset mount and 7.5cm offset mount.
Because the 7.5cm offset may have some extra sideways force on it, I included a 4 screw option.
Recommended settings:
My Print:
Designed for countersink, 8g (~4.2mm) screws.
STEP files included.