Battery for Sony MDR-1ABT MDR-1ADAC MDR-1RNC MDR-1RNCMK2 MDR-1000X PHA-1 PHA-2 MHS-TS55 WH-1000XM2 Headset 3.7V 1200mAh SP73 - AliExpress
SONY Wireless Noise Canceling Headphone MDR - 1000X: High Resolution | eBay
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Amazon.com: ALLC Replacement Battery for Sony MDR-1000X/MDR-1ABT/MDR-1ADAC/ MDR-1RNC/MDR-1RNCMK2/PHA-1/PHA-1A/PHA-1AEU/SRS-BTS50/WH-1000XM2,PN:4-296-914-01/LIS1580HNPC/SP73/SP-73,1050mAh : Electronics