Sony WF 1000XM4 Left Earbud draining 10 times faster than right

[Thommy]

Like the title states, my left earbud randomly started draining extremely fast.

I suspect the 2.0.1 firmware.

I bought these in Denmark on February 17 last year and now they are essentially worthless as I can only use the left earbud for about 40 minutes.

 

I have since moved countries to Japan, so I don't know what to do about warranty now 😞

I have a attached pictures showing the battery drain using both over about 1 hour.

Sony please respond.

 

[Marino.Manolo]

WF-1000XM4: The remaining battery charge varies greatly between the left and right earbuds
https://www.sony.co.uk/electronics/support/articles/00283656

[Thommy]

Thank you Marino, I have followed the page and tried resetting and re-initislized but I did nothing unfortunately 

[SuperMarioY]

I have had identical symptoms and here is what worked for me.

1. Open Sony Headphones Application

2. System > Initialize Settings > Initialize Headphones to Default State

3. Uninstall Sony Headphones Application

4. Fully charge earbuds and case

5. Install Sony Headphones Application

6. Reconnect earbuds via phone's Blutooth as usual

7. Open Sony Hadphones Application then follow these few steps :

Set the following settings on the Sony | Headphones Connect app, and play any music:

• Volume: Middle
• CODEC: AAC
• DSEE Extreme: OFF
• Noise Canceling: ON
• Other settings: OFF

It looks like unless you follow those steps something residual is still left behind messing left earbud's battery drainage up so please be sure not to skip anything mentioned above.

My earbuds are now in as good as new state, I hope it works for you to.

Good luck bro.