1 X RC Car 9.6V, 1600mAh Ni-MH battery pack gives more power than standard batteries Safety Guard timer won't overcharge your battery--helps preserve battery life Ni-MH or Ni-Cd battery selection 9.6V 1600mAh Nickel-Metal Hydride Battery Pack (23-331) Charger (charge Ni-Cd or Ni-MH batteries and Owner's manual