This is SF7543128SH25 3700mAh 11.1V Li-polymer battery. Type: Lithium Polymer Nominal Capacity: 3700mAh Nominal Voltage: 11.1V Configuration: 3S1P Dimensions( T* W* L) : 23.5* 42.0* 136.0mm ( middle value) Weight: Approx.: 286g Maximum Continuous Discharge: 25C Maximum Continuous Current: 92.5A Ideal for use in RC models, airplanes& helicopters, RC toys, ect.