This is a battery holder for the xbox360 wireless controller. The design is printed in one piece, aims to look exactly like the original one.
Unfortunately I could not recreate the spring mechanism that locks the original battery holder into its place, but found out that this design is such a tight fit that you don't really need to fasten it.

Print it with supports (there will be only 2 or 3 layers of supports printed). After it's done, make sure that all the support is nicely removed.

HE3D

No

Yes

0.3mm

doesn't matter

If you want that the holder fits your controller nicely, make sure to sand away all the remnants of the support on the shorter side of the holder (the part which slides into the controller).