Sony WF-1000XM4 Charger Case Replacement Battery 520mAh 3.85V (YY2948) Bose On-Ear Parts 📌 Please check your model

📌 Please check your model number on the back of your device carefully before ordering

hinge swivel

No soldering required for the housing swap itself

Installation Notes: Professional installation is recommended

Sony WF-1000XM4 Charger Case Replacement Battery 520mAh 3.85V (YY2948) Bose On-Ear Parts 📌 Please check your modelBring 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 wont 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)