xbox 360 controller 18650 battery holder

A remix of Kingnai's battery holder https://www.thingiverse.com/thing:110764 to use 18650 batteries on xbox 360 wireless controller.

IMPORTANT NOTES
1) voltage will be a little higher than regular batteries since a charged cell is over 4v instead of 3.2v for two AA batteries.
This didn't give me any problem aside the fact that the ring led stays dimly lit even with the controller off, but I've only tested this on one controller so your results may vary and I'm not responsible for you burni