Bring your Sony WF-1000XM4 charging case back to life with this new replacement battery, designed specifically for the charger case model YY2948.
If your case no longer holds a charge, drains quickly, or won’t fully charge your earbuds, this 520mAh Li-ion battery is the reliable fix.
🔋 Battery Specifications
- Battery Model: 702428
- Capacity: 520mAh
- Voltage: 3.85V
- Type: Li-ion
- Condition: New
- Compatibility: Sony WF-1000XM4 Charging Case (Model YY2948)
⚠️ Important
- Fits the charging case only (not the earbuds)
- Confirm your case model is YY2948 before ordering
- Professional installation recommended
Watch Our How To Install WF-1000XM4 Charger Case Battery Replacement:
Reviews
There are no reviews yet.