his Cell Phone Lithium-Ion Extended Battery (2200mAh) is for you to keep as an extra power source for your cell phone device. Keep an extra battery for your cell phone handy at home, in the office or on your travel. Meanwhile the cover is the simplest way to protect your battery from any potential scratches. FEATURES: High Capacity reliable Lithium-Ion Battery rated at 2200mAh Expect to Approx. Double Your Talk and Standby Times This battery for you to keep as a reliable extra power source handy Advanced lithium-ion technology keeps phone working at optimum performance. SPECIFICATIONS: Color: Black Weight: 1.76 oz (50g) Output Voltage: 3.7 VBattery Type: Lithium-Ion Extended Battery Battery Capacity: 2200mAhEstimated talk & standby time: to 6 days standby time and 3.5-4 hours talk timeNOTE: Actual performance and standby time vary depending on user habits. IMPORTANT NOTE: The battery operation time depends on conditions such as: Transmitting power level, Signal (distance between the phone and the base station), and Network parameters defined by the operator Compatible With Motorola Droid 2 A955 Droid A855 Milestone