Specifications: 1) Nominal Capacity:570 mAh 2) Minimum:550 mAh 3) Internal Resistance<80 4) Voltage:3.7 5) Thickness:4.0 6) Width:30 7) Length: 48 8) Weight: 11.0 g Key Features: 1) High Energy Density 2) Safe and Reliable 3) High Capacity 4) Light Weight 5) Super Slim Design 6) Good Load Performance 7) Flexible Dimensions 8) Low Impedance and No Memory Effect 9) Excellent Discharge Performance 10) Custom Design Available