Hobbico HydriMax NiMH 8C 9.6V 2000mAh Flat Transmitter Universal Connector Battery Pack FEATURES: Designed for use in transmitters that use an 8-cell flat battery pack INCLUDES: HydriMax Ultra 9.6V 2000mAh NiMH Battery Pack with Universal Connector REQUIRES: NiMH compatible charger such as the DuraTrax Onyx series of chargers Hobbico Quick Field Charger MkII, HCAP0290 DuraTrax Ice, DTXP4170 Hobbs