4DRC V4 RC Drone WIFI FPV 4K Dual Camera Gesture Photo Smart Follow Quadcopter

1 x V4 RC Quadcopter. Quadcopter battery: 3.7V 2000mAh lithium battery (included). Hobbywing 30A 40A 50A 60A 80A Brushless ESC for RC Airplane Helicopter Drone. Q: What if the drone can’t take off ?. Q:How many battery of this drone?.