LS Accessories Li-ion Battery for Samsung Galaxy S2 (I9100) and Samsung Galaxy Camera (EB-F1A2GBU) (NOT compatible with Galaxy SII for AT&T, Galaxy SII for T-Mobile, Epic 4G Touch for Sprint) Battery (EB-F1A2GBU) ONLY compatible with Samsung Galaxy S2 (I9100) and Samsung Galaxy Camera, NOT compatible with Samsung Galaxy S2 for AT&T, Samsung Galaxy S2 for T-Mobile, or Epic Touch 4G for Sprint 1650 mAh high quality Lithium Ion battery that charges to its full capacity for over 500 cycles Grade A batteries with Dual IC protection to ensure safety; Battery Voltage: 3.7 Volts Battery Energy Content: 6.11 Watt Hours