EZOPower 2 X 2000mah Standard Lithium-ion Battery + USB Battery Charger for Samsung Galaxy S2 / SII / i9100 Series Compatible with Samsung GALAXY S2 / SII I9100 Attain 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: 2 x EZOPower Standard Lithium-Ion Battery , 1 x EZOPower Battery Charger