[Updated] Sony WF-1000XM4 severe battery drain & overheating issues persist months later, potential workaround inside
Here’s the crux of the article in video form:
New updates are being added at the bottom of this story…….
Original story (published on Jan. 30, 2023) follows:
The WF-1000XM4 truly wireless headphones raise the bar in terms of noise cancellation and music quality. They provide an outstanding listening experience that is personalized to each individual listener.
The earbuds recognize when you are stationary, moving, or in a noisy environment and switch to ANC or Hear-through mode for you.
However, some people are having difficulties using them.
Sony WF-1000XM4 severe battery drain & overheating issues
According to multiple reports, Sony WF-1000XM4 users face battery drain and overheating issues with their devices (1,2).
Users began reporting high battery drain on the WF-1000XM4 earbuds issue about 5 months ago. At the time, the culprit appeared to be the 1.4.2 update.
Another alarming symptom noticed by several users was that the affected earphones became hotter than expected while charging in the case.
As their earphones were still under warranty, users contacted Sony and received new devices.
While some people did not experience these problems, there were a few others whose warranty-replacement pair (Which came with v1.5.0) had this issues.
Mine were absolutely fine. They’re about 10 months old. No battery drain or Un-even discharge on any side. About 2 weeks ago i updated to 1.6.1 just to be on the safe side. Then the issues started. My left bud now drains 15-20% faster than the right one
I just got a pair of WF-1000XMFs. I turned them off in the app with 100% battery and didn’t put them back in their charging cradle on purpose, as I wanted to see if the uneven battery issue had been fixed by a reset. However, the next day their battery levels were at 40% (they weren’t touched and the bluetooth on my phone was not on). Later in the evening, they were dead.
Sony allegedly released a new firmware update in December of last year to reduce battery drain issues. But it looks like things haven’t changed much.
Now Sony USA appears to have established a common process for addressing these RMAs with the following list of questions:
1. Have you tried the reset process?
2. Is the unit getting hot while charging?
3. Is the red light blinking on the unit?
Additionally, replacements are being honored outside of the standard warranty period.
A user has proposed a potential fix for this issue that involves downgrading to pre-v1.4.2 firmware. Use this tool to do so:
We hope Sony looks into WF-1000XM4 severe battery drain and overheating issues and resolve them as quickly as possible.
As always, we will keep an eye on the situation and update this space as new information becomes available, so stay tuned.
Update 1 (March 1, 2023)
01:25 pm (IST): While a new firmware update is available, it does not seem to fix the issue, as reported by some users.
Update 2 (May 16, 2023)
05:12 pm (IST): Fresh reports suggest that the issue with battery drain still persists and it appears that the only solution is to return the faulty units for refund or replacement.
Update 3 (May 22, 2023)
05:49 pm (IST): A Redditor said that their headphones were not approved for servicing for battery issues due to invalid serial number.
Update 4 (May 23, 2023)
05:14 pm (IST): According to a user, the battery drain issue started to happen after around 400 hours of use.
Update 5 (May 24, 2023)
05:24 pm (IST): In an attempt to address this issue, a user suggests consistently powering off the headphones when they’re not in use.
Daily driving the mx4 for the past 1 year+. Honestly, I charge it like once a week <~20% to full>. Never had the battery drained more than 10% a day <3 hours use a day>. The stats get better after 1 month. But do keep in mind that you should turn off the headphones when not in use to save the charge and protect your headphones.
However, it’s important to note that for some individuals, this method doesn’t provide a foolproof solution, with up to 30% battery drainage still reported.
Update 6 (May 26, 2023)
05:14 pm (IST): Some users agree that the battery drain issue started showing up in one of the earbuds after a year of use (1, 2).
Update 7 (May 30, 2023)
04:53 pm (IST): Normally, the Sony WF-1000XM4 offer around 6 hours of battery life. However, the units affected by the problem barely offer around 2 hours of use.
Update 8 (May 31, 2023)
02:36 pm (IST): A user suggested that the WF-1000XM4 battery drain issue could be blamed on a software failure and not a hardware failure, causing the earphones to misinterpret the real remaining capacity.
Note: We have more such stories in our dedicated Sony section so be sure to follow them as well.
Featured image source: Sony
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