XBox Controller Battery Cover / Cable Guard / 18650 Battery.

Updated Aug 2025.

I updated the battery cover file. Should you lose the original factory cover, this should fit good and tight. It should positively snap into place. If the snap is too much to your liking, just file or sand the bottom of the middle tab a bit to lessen the pressure needed to snap it in place.

Print in black PETG to replace the factory battery compartment cover. Tree-Support for the tabs work best for me. I used Pet-G for its lasting springey jet ridget properties, but PLA should also work, may not last as long.
I printed this with a 0.5mm nozzle and it was spesifically desighed to work with 0.24mm layers. Should be fine with 0.2mm layers, but I did not test. The difference comes in how smoothly and level the cover edges fit into the compartment. After many itterations this model got it as snug and flat as possible.

I also recently bought a 5m USB extension cable to try and lesson the controller lag in my games, so I designed this "Cable-Guard" to keep the USB-C cable safely aligned, especially should the controller fall. I have lerned my lesson on usb ports getting damage when cellphones with charger cables fall and damage the charging port on the phone, which is expensive to repair.
The cable-guard provides for a small cable tie to keep the cable down in the groove. It should fit most usb-c cables, used one with a larger plug and cable diameter to test it, worked well also, with much less space in the groove, but it did work.

The cable-guard also prevents inadvertent tugs on the cable to damage the port. Those tugs happen a lot in my case, bluetooth is such a better idea, but no such thing as a perfect solution I suppose.

I also suppy an alternative 18650 Battery compartment design which I thought to improve on some aspects of the original design.

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Original 18650 Li Battery converter Text.

This started with my XBox controller eating batteries as fast as I kill bosses in games.
I even upgraded from XBox-One to XBox X/S series, which was expensive but well wroth it. The new X/S-series controller is lighter on batteries ,but still chew thru them.

My design was inspired by someone on Thingiverse showing people to build enclosed overheated chargers with lithium batteries to solve this same issue. I strongly recommend charging all your batteries, cellphones included, in a dedicated charging area, properly prepared, with at least a fire extinguisher nearby.

This design uses a "regulated" 18650 Lithium battery that can be popped out and charged elsewhere. (I use two batteries, one in charger, one in controller.) The "unregulated" batteries are slightly shorter, but I did not try them for this controller.

Print flat as in the file with TREE-supports for the five tabs, but block support for the long 5mm hole for the positive wire thru the battery holder. (See pictures)
Two button head M3 screws with a suitable spring will be the contacts. Secure them with Lock-Nuts. They must be able to move a bit.
Use soft copper wire that will carry at least 4amp to wire the positive thru the long hole to the correct M3 screw. The negative is short and goes to the closest M3 screw. Be sure the two wires and screws cannot cause a short.

Please TRIPLE CHECK YOUR POLARITY.
PS: My controller had a bad fall with this conversion. The two top tabs broke off the printed part. No other damage to controller. I reprinted and all is working well. Thought of strengthening the two tabs, but decided better to have the print break should clumsiness happen again.

PS: I designed a stand / wallmount to be used with this. Please see www.thingiverse.com/thing:6527284