SDNPBX1 Lithium-ion Rechargeable Battery - Ultra High Capacity (1600 mAh 3.6V) - Replacement for the Sony NP-BX1 Battery For Sony Cyber-shot DSC-RX100 III,DSC-H300,DSC-H400,DSC-HX300,DSC-HX400,DSC-HX400V,DSC-HX50V,DSC-RX1,DSC-RX100,DSC-RX100 II,DSC-RX1R,DS Replacement battery for the Sony NP-BX1, Lithium-Ion (Li-ion) 3.6V (1600mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark