The NP-BX1/M8 Rechargeable Lithium-Ion Battery Pack from Sony is designed to replace the original NP-BX1 battery. It is rated at 3.6V and features a capacity of 1240mAh. Camera Compatibility Cyber-shot : - DSC-RX100 - DSC-RX100 II - DSC-RX100 III - DSC-RX100 IV - DSC-RX1 - DSC-RX1R - DSC-HX300 - DSC-HX50V - DSC-WX300 - DSC-HX400V Action Cam : - FDR-X1000V - HDR-AS200V - HDR-AS100 - HDR-AS30V - HDR-AS20 - HDR-AS10 - HDR-AS15