This battery make up of high quality lithium polymer, with incredible light weight but powerful output current! Compared to normal RC battery (Nicad, NiMh etc), this lipo battery can bring you longer running time and greater pleasure! New Product! New Arrive! Heatproof. Suitable for RC Car Truck and Boat 100% Brand New Heatproof EC POWER 5000mAh 7.4V 15C Hi Rate Lithium Polymer Battery. Powered radio controlled models. Light Weight. Rechargeable. Dimension : 153mm x 72.5mm x 12mm (please make sure the size of these battery fit your RC first.) Weight : ca 273g Continuous discharge rate: 10C Capacity : 5000 mAh Voltage : 7.4 V Cells : 2 1 pcs of 100% Brand New Heatproof EC POWER 5000mAh 7.4V 15C Hi Rate Lithium Polymer Battery .