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Sony WF-1000XM4 Charging Case Battery Replacement

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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.

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