This is SF5243128SH45 2S2P 5000mAh 7.4V RC car Lipo battery( with carbon hard case) . Type: Lithium Polymer Nominal Capacity: 5000mAh Nominal Voltage: 7.4V Configuration: 2S2P Dimensions( T* W* L) : 24.0* 46.0* 138.0mm ( middle value) Weight: Approx.: 293g Maximum Continuous Discharge: 45C Maximum Continuous Current: 225.0A Ideal for use in RC car.