Umarex and Elite Force have brought an inexpensive, reliable smart charger that quickly and safely charges NiMH batteries while protecting from overcharging that occurs with standard wall chargers. This charger has a simple LED indicator that changes from red to green once the attached battery is fully charged.Specifications and Features:Compatibility: 9.6v NiMH batteriesFor use with 9.6v batteries ONLYMaterial: Injection molded polymerOver voltage and over current protectionSmall Tamiya plugTrickle-charge keeps batteries fully charged after charging cycle is complete