3.6V 700MAH Battery(2/3AA)-With Air-to-Air Plug-(ShapeH-Shape, One Row,left and Right Each with 2 Inner-Battery)-Size-42x29x14mm,3.6V NI-CD NI-MH 700MAH Battery be suit for RC Truck,RC Car,RC Boat,RC Robot,rc tank,rc Quadcoter,Drone,RC Helicopter,etc.