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Sony WF-1000XM4 Charging Case Battery Replacement

필요한 것

  1. Sony WF-1000XM4 Charging Case Battery Replacement, Charging Case Battery: 1 단계, 이미지 1/1
    • Open the case lid and remove the headphones if present

  2. Sony WF-1000XM4 Charging Case Battery Replacement: 2 단계, 이미지 1/1
    • Use one hand to press together the short edges of the case (in the direction of the green arrows). This will create moderate gaps in the top rim on all four sides

    • With the other hand, insert a spudger or pick in each of the four gaps, and carefully lever up the inner plastic piece a little bit.

    • The clips in each of the four corners (location indicated by the red circles) aren't very tight and should be easy to release.

    • I used a metal spudger, but you should prefer a plastic pick as there's less chance of causing damage.

  3. Sony WF-1000XM4 Charging Case Battery Replacement: 3 단계, 이미지 1/1
    • Once the clips have been released, you can lift out the inner assembly (which has the hinge and lid attached).

    • The bottom plastic piece holds the battery and the charging coil and is very loosely clipped to the top, release it and carefully fold it to the side.

    • These clips break easily, but that shouldn't be a big problem, as the bottom piece will be held in place by the outer shell later.

    • Be careful to not rip off the wires of the battery or the charging coil, especially the charging coil wires are very fragile. If they break, you might need to resolder them.

    • If you're able to, you may want to desolder the copper charging coil wires now, which greatly reduces the chance of further damage. You'll need to resolder them when finished.

  4. Sony WF-1000XM4 Charging Case Battery Replacement: 4 단계, 이미지 1/1
    • Above the battery is black plastic piece, which is now free. Lift it up and remove it. Make sure to remember the original orientation.

  5. Sony WF-1000XM4 Charging Case Battery Replacement: 5 단계, 이미지 1/2 Sony WF-1000XM4 Charging Case Battery Replacement: 5 단계, 이미지 2/2
    • In case you want to access the underside of the PCB, unscrew the PH 0 screws holding the PCB.

    • However this isn't strictly necessary for just replacing the battery. It might give you more room however.

    • Note that the magnets attract the small screws, which can be annoying.

    • Carefully unplug the battery connector.

  6. Sony WF-1000XM4 Charging Case Battery Replacement: 6 단계, 이미지 1/1
    • Now the battery is free. Carefully remove it from the bottom of the plastic frame, maybe applying some (moderate!) heat or isopropyl alcohol to loosen the glue if necessary.

    • Do not damage the battery! It could catch fire or explode.

    • Place the new battery in the same location and reassemble again.

결론

To reassemble your device, follow these instructions in reverse order.

다른 16명이 해당 안내서를 완성하였습니다.

Jonathan Haas

회원 가입일: 03/09/18

977 평판

안내서 2개 작성하였습니다

댓글 9개

Hello there, I am facing a peculiar issue recently. And I am unsure how to fix it. My WF1000 XM4 case after I got some water in it from the rain, whenever I want to charge it via USB C the case completely shuts down. I opened case, and the disconnected the battery and put in a silica gel bag. And then well, after that I again connected the battery. And the lights went up and it works but I can’t charge it. Whenever I want to charge it, the case shuts down and I have to disconnect and reconnect with the battery to turn it on. The green lights and all everything’s fine. But I can’t seem to recharge it. So, my question is, would a battery replacement be enough to fix it or do I have to replace the whole case?

Md. Zarif Kaisar - 답글

Does it charge the headphones with the battery disconnected while connected to USB C?

I suspect the problem to be on the PCB in your case. You could try to clean any corrosion with isopropanol. Especially around the chips and the battery connector.

Jonathan Haas -

Thanks a ton Jonathan, you were a big help in guiding me through this repair process cause in Bangladesh my country there's no support for repairing tiny electronic devices like this. I tried cleaning some of it with isopropyl alcohol on a cotton swab. But, then I noticed my Sprayway contact cleaner was expired in 2022 which makes it ineffective in 2024. I couldn't clean the internal of the USB C where I feel the mail culprit of the corosion lies if there is. Cause it was in my pocket and I was wet. And after cleaning it I still couldn't charge it. The battery still powers off automatically and the case turns off completely.

Now, as you asked me to try charge the headphones directly with the battery disconnected, well it works. But a few observations. It doesn't connect the first time. It connects the second time and it blinks red twice continuously. It charges the earbuds properly and also works to connect and disconnect from the phone but it shows red light blinking twice. Green and Orange light work too

Md. Zarif Kaisar -

And btw can I please get your email so that I can contact you directly if I need more assistance. If it's alright. Here's mine, zarif.kaisar@gmail.com

Md. Zarif Kaisar -

Red blinking is normal when the battery is disconnected. As it charges when the battery is disconnected, I assume the problem is the battery. Can't guarantee that there is no damage on other parts, however.

I don't do private support, I just wanted to help people by putting the howto on the site, so I'm not giving my email, sorry.

Jonathan Haas -

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