Xbox 360 Controller holder

This is a holder for the Xbox 360 wireless controller. I personally don't like to leave the batteries in the controller. I have the feeling they slowly discharge. So I designed a seperate place for the batteries.

The bottom plate has a dimension of 164x40 mm. Both rods have a size of 5x5 mm with two rounded corners to the Middle (In the picture they are 3x3 mm, but I decided to strenghten them).