The file 'Packout Dual M18 Battery Mount 3D Printer Model' is (stl) file type, size is 17.5KB.
Couldn't find a dual battery mount for my M18 Batteries, so I threw this one together. Fits nicely in the double wide Packout slots.
I would recommend supports.
M18_Packout_Dual.stl | 68.1KB |