SHARPTECK Original 3.7Vx2 1000mAh Li-Po Battery for UDI U842 U842-1 U818S RC Quadcopter Drone Spare Parts Pack of 2 Lithium battery specially designed for UDI RC U842 U842-1 U818S drone Capacity: 3.7V*2 1000mAh Charging time: about 120 minutes, offer flight time about 7-9 minutes High quality and rechargeable performance, battery come with extra battery tray Dimensions: 11 x 4.5 x 3 cm / 4.33 x 1.77 x 1.18 inch