Replaces or upgrades your faulty or damaged Samsung i9100 Galaxy S2. Works like the original manufacturer cell phone battery with 1800mAh Li-ion battery of capacity but at a lower cost. Stay connected with your family and friends by getting extra battery power today. This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life. Best replacement for the original battery with comparable standby and talk time. - Color: Black - Voltage: 3.7V - Capacity: 1800mAh - Double cells - Compatible with Samsung i9100 Galaxy s2 - Great replacement for your damaged worn or lost original battery