Turnigy Hump Pack 6V 4200mAh 5-Cell Nimh Hump Battery with JR/Futaba Connector Brand New Turnigy Hump Pack 6V 4200mAh 5-Cell Nimh Hump PAK Battery with JR/futaba Connector. Dimensions are L 2 3/4 X  W 1 3/4 X H 1 3/4 please check size to make sure it will fit.