I founs out today if you lost the back part of your Xbox 360 controller, you can just stick two pennies on top of the batteries. I tried it a few hours
I just dug up my old Xbox 360 and found it to somehow work, only problem I had was that the controllers battery compartment looks like this and the controller doesn't turn
Amazon.com: XINKEEN 2X Black Battery Cover for Microsoft Xbox 360 Wireless Controller : Video Games
Xbox 360 battery pack : r/thereifixedit
Li-po and Li-Ion battery for the Xbox 360 controller. – S-Config
Xbox 360 Controller Battery Pack Charging Fix - YouTube
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Amazon.com: Battery Pack Cover for Xbox 360, Replacement Battery Pack Cover Shell Repair Part Compatible with Xbox 360 Wireless Controller(4 Pack, Black, White) : Video Games
Is it safe to use the Xbox controller while plugged in with 2 AA non-rechargeable batteries inside? - Quora
How to Fix an Xbox360 Controller That Doesn't Turn On - Battery Pack Quick Fix - YouTube
Xbox 360 Battery Pack Not Working? - (Here's How to Fix!)