PowerSmart® 3.6V 2200mAh 7.9Wh Battery LIP-12, LIP-12H for SONY MZ-E3, MZ-R2, MZ-R3, MZ-R30
This replacement battery is also compatible with the following models:
Sony MZ-B3,
Sony MZ-E3,
Sony MZ-R2,
Sony MZ-R3,
Sony MZ-R30,
Sony MZ-R35,
Sony MZ-R4ST