New Z55H ZeniPower Replacement Bluetooth Headset Battery CP1254 (1254) for Sony WF-1000XM4 – Key Features
Compatible Model: Sony WF-1000XM4 true wireless earbuds
Battery Model: Z55H / CP1254 (1254)
Battery Type: Rechargeable Lithium-ion coin cell
Nominal Voltage: 3.85V
Capacity: 75mAh (0.29Wh)
Application: Replacement battery for worn-out or degraded WF-1000XM4 earbuds
Performance: Restores battery life and listening time
Installation: Requires disassembly of the earbud; professional installation is recommended
Package: Commonly sold as a pair (2 batteries), one for each earbud
Here are the Specifications for the ZeniPower Z55H / CP1254 replacement battery used in the Sony WF-1000XM4:
| Specification | Details |
|---|---|
| Battery Model | ZeniPower Z55H / CP1254 (1254) |
| Compatible Device | Sony WF-1000XM4 (XM4) |
| Battery Type | Rechargeable Lithium-ion (Li-ion) Coin Cell |
| Nominal Voltage | 3.85 V |
| Capacity | 75 mAh |
| Energy | 0.29 Wh |
| Shape | Coin/Button Cell with solder tabs |
| Rechargeable | Yes |
| Replacement For | Original WF-1000XM4 earbud battery |
Compatibility Note:
Designed specifically for the Sony WF-1000XM4 earbuds.
A 3.85 V Z55H battery is recommended. Some users have installed 3.7 V CP1254 batteries, but they may not provide the same charging behavior or battery life as the original 3.85 V cell.