2x Z55H 1254 3.85V Replacement Coin Batteries For Sony WF-1000XM4, XM3, XB700 Earbuds

Are your Sony WF-1000XM4, XM3, or WF-XB700 earbuds not holding a charge like they used to?

It might be time for a new battery.

This listing is for two original-style Z55H rechargeable coin batteries.

They're 3.85V with a capacity of 75mAh.

These are the specific cells that go inside the earbuds themselves.

Replacing them can give your expensive Sony earbuds a whole new life.

This is for the internal battery, not the charging case battery.

A quick heads-up: Replacing these requires some skill with soldering and opening up the earbuds, so it's a DIY repair for the handy person.

If your earbuds are dying too fast, this 2-pack of Z55H batteries is a cost-effective way to fix them.