3.7V 3800mah Battery for ZLL SG901 MAX Drone Quadcopter. 1 Set Propeller Blades for ZLL SG901 Pro/SG901 MAX Drone Quadcopter. 3.7V 1800mah Battery for ZLL SG901 Pro Drone Quadcopter. Original 7.4V 2500mAh Battery for 4DRC F11 Drone Quadcopter.