2.11.1V lipo battery: suitable for most of RC transmitter with JST JR Futaba Plug. 9IMOD 3S RC Lipo Battery 11.1V 650-6000mAh 25C-75C for RC Car Boat FPV Drone. This 11.1V 2200mAh 8C battery is specially design for the RC transmitter and RC model with JST JR Futaba Plug.