How to replace an Index Controller battery when both Pimax and Valve refuse to help you and tell you to buy a new controller instead - Controllers - OpenMR | Community
Replace Index Controller battery without soldering (XINJ battery) #righttorepair - YouTube
Will leaving the Index controllers plugged in at full charge damage the battery? : r/ValveIndex
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Amazon.com: DeadEyeVR Valve Index Wrist Mounted Battery Kit - Accessory That Charges Your Controllers While Playing : Video Games