ARINO TATTU Lipo Battery Pack 1800mAh 14.8V 75C 4S1P for RC Cars Boat Helicopter Electric Toys, Professional RC Battery for UAV Drones FPV Goblin 500 570 630 700 770 Energy Density: Special adapted to each UAV type and RC car/boat/heli type. Very High according to capacity/weight Low IR: Provides stable voltage until the end of your mission Safety: Gens ace and its' partners full fill the ISO9001, ISO14001, standards Tattu 1800mAh 75C 4S1P, professional battery for FPV racing. With light weight, smooth discharge and long flight time. TATTU is specialized for the UAV & UAS market, with their industrial quality