Tectra 6600mAh High Capacity Battery + Tools Replacement for Wii U Gamepad Rechargeable Long Lasting Battery, Fix Dead Power Issue : Amazon.ca: Video Games
Buddy of mine gave me all his broken controllers. Time to repair them! Should be an easy fix as most just have stick drift and dead internal batteries. Wish me luck :p :
PSA: If your Switch Pro Controller seems dead, there might be an easy fix
5 tricks to know what's wrong with your DEAD Playstation 4 controller and how to fix it - YouTube
iFeelPixel support: Joystick Data
How to Replace Xbox One Controller Analog Joystick - Fix Stick Drift & More - YouTube