EZOPower 3 x 2000mAh Standard Lithium-Ion Battery + Battery Charger for AT&T Samsung Galaxy S2 / SII I9100 Compatible with Samsung GALAXY S2 / SII I9100 Brand new EZOPower Standard Battery. Model, Capacity: 2000mAh Battery type: Lithium-Ion. No memory loss effect. Integrated microchip prevents overcharging & lengthens battery life Package Includes: 3x EZOPower Standard Lithium-Ion Battery , 1x Battery Charger