Hobbico HydriMax NiMH 8C 9.6V 2000mAh Square Transmitter Universal Connector Battery Pack FEATURES: Designed for use in transmitters that use an 8 cell square transmitter battery AA size cells with clear shrink wrap and universal connector INCLUDES: HydriMax NiMH 9.6V 2000mAh Square Transmitter Battery with Universal Connector REQUIRES: Battery charger such as; Any of the DuraTrax Onyx series Hobbico Quick Field Charger MkII, HCAP0290 DuraTrax Ice, DTXP4170 Hobbico Accu Cycle