Tips on charging headphones (WF-1000XM4)

Sony WF-1000XM4 review: Software updates help keep these excellent earbuds on top - CNET

Sony WF-1000XM4 Wireless Earbuds

Sony Ear Tips - Comply Foam

The remaining battery charges of the left and right WF-1000XM4 earbuds are significantly different.

Sony WF-1000XM4 Wireless Headphones, Listening in high resolution can now be done anytime, anywhere. Perfect for calls, music and movie enjoyment wherever you are. Block Distracting Noise., By PC Image

Finally did the battery swap on my WF-1000XM4 : r/SonyHeadphones

The headphones do not charge (WF-1000XM4)

The Walkman Blog: Sony WF-1000XM4 explodes while charging

Sony LinkBuds S vs WF-1000XM4 - The BETTER XM4? 😲 — Aaron x Loud and Wireless

Sony WF-1000XM4 Noise Canceling Earbuds, Silver w/ 10000mAh Wireless Charger WF1000XM4/S K