The Battery Mount is very simple to make. Look at the image below and the measurements on the Draft.

• Important: Set up the project as m.m. and .1mm & only creat/edit your shapes if you are in a direct 90 degree view of the shape and at that moment you can Set the Plane. Finally, turn off the shadow. If this confuses you...go view the training for Cube/Sphere/Peg. 
• First, I placed three boxes on the screen.
• Box #1 I made the base (Green) and gave it a dimension of 56mm x   12mm x 3mm (view the draft!)
• Box #2 (Blue) is 35mm x 12mm x 2mm.
• Box #3 is (Red) is 2mm x 12mm x 22mm. Copy and paste  this shape - you should now have two red side walls.
• View the Draft Images and use the arrows on your keyboard to precisely line up the boxes on your Battery Mount. 
• Finally, add the two holes - view the Draft Image for placement of the holes (The size of all the holes are 3.18mm x 3.18mm)- Group - Print...you are done!