High Capacity 1600mAh high capacity NP-BX1 replacement battery. Voltage: 3.7V Compatible Modelfor Sony NP-BX1/M8, DSC-RX100,DSC-RX100 II,DSC-RX100M II,DSC-RX100 III,DSC-RX100 IV,DSC-RX100 V/VII,ZV-1 Camera Features four layers of protectionCome with CE, FCC, PSE, ROHS Certified. Tested by manufacturer to match OEM standard. over-charging, short-circuit, high-temperature, and surge protection) with a high-quality, fire-resistant construction, ensure complete protection for you and your devices. Memory free for maximum performance- Absolutely no memory effect so that you can charge battery at anytime - Super Long Time Recording. Package ListNP-BX1 Battery*4, Battery Charger with Charging Cable*1