Xbox 360 Wireless Controller battery pack from disposable vape cells and tp4056

Battery pack, that fits two vape cells in parallel + TP4056 module. 

ADJUST THE CHARGE CURRENT RESISTOR ON TP4056!

Should be printed from temperature resistant filament to handle soldering (of the contacts and on the tp4056 board). I used transparent PETG to see the tp4056's LEDs.

The top part's printing should be paused to fit in the TP4056 before the cover is printed over it.

Bottom contacts should be made from flat copper plate . I sourced mine from scrap 220V extension cord. 

Changed the model heavily to fit TP4056 + to have space for copper contacts on the bottom