SDIABP85ST Rechargeable Lithium-Ion Battery - Ultra High Capacity (1000mAh 7.4V) Replacement For The Samsung IA-BP85ST Battery Replacement battery for the Samsung IA-BP85ST, Lithium-Ion (Li-ion) 7.4V (1000mAh) 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark