Got my Sony WH-1000xm3 when they came out. And after 4 years it's time to replace the battery. Hope to get 2 years more of life at least. If more then I'm
Sony WH-1000XM3 Wireless Noise Cancelling Over-the-Ear Headphones with Google Assistant Silver WH1000XM3/S - Best Buy
Sm-03 For Sony Wh-1000xm3 Headphone Battery - Buy Headphone Battery,Bluetooth Battery,Headset Battery Product on Alibaba.com
Sm-03 For Wh-1000xm3 Headphone Battery - Buy Headphone Battery,Wireless Headphone Battery,Headset Battery Product on Alibaba.com
Sony WH-1000XM3 Battery Replacement - iFixit Repair Guide
Sony WH-1000XM3 Battery Troubleshooting, Repair or Replacement Walkthrough - Teardown and Fix - YouTube
Sony WH-1000XM3 Battery Replacement - iFixit Repair Guide