About this item:Wide application: 3800mAh high capacity Li-ion batteries fit for WLtoys 44001/144010/124017/124019/124018/12428 high speed rc car and most 1/10, 1/12, 1/16 RC cars, trucks and RC Boats. Please kindly check the battery compartment size and the original battery plug of your RC cars. (Only if the voltage, dimension and the plug match, then it will fit).Parameters: dimensions: 90*38*20mm; weight: 155 g(per unit); high capacity: 3800 mAh; voltage: 7.4 V. Discharge: 30C Plug: Deans T Plug.High capacity and more power: 3800mAh high capacity battery pack delivers power when you need it. RC battery pack delivers a discharge rate to push your RC car run time to the peak of its abilities.Long cycle life: our advanced Lipo battery with uniquely designed .