This is a wall mount for the battery of a Tenways CGO800S. It can be loaded inside and there is space for the power cable on the side.
Simply attach to a board or wall with 4 screws (not countersunk screws). I have glued foam rubber to the inside of the base so that the battery lands softly and is not damaged.
I recommend printing it a little more stable as the battery is quite heavy. Supports not needed.