3.85V 520mAh 702428 Replacement Battery for Sony WF-1000XM4 Charging Case

Specifications Replace Part Number: 702428 Battery Type: Rechargeable Li-Polymer Battery Voltage: 3.85V Capacity: 520mAh Application: Sony WF-1000XM4 Charging Case Battery Replacement Compatible Model Sony WF-1000XM4 Charging Case Package Includes 1 × 702428 Replacement Battery Important Compatibility Note Please check your original battery model, battery size, voltage and connector type before ordering. This battery is for the Sony WF-1000XM4 charging case, not for the left or right earbuds. Professional installation is recommended because charging case battery replacement may require disassembly and careful handling.