RC Drone Quadcopter Lipo Battery Upgrade Version 3.7V 1200/1800/850mAh 

Weight: 20g

Voltage: 3.7V

Type: Li-Ion

Size: Approx.6.7x2.4x1cm/2.64x0.94x0.39inches

Nominal Capacity: 1200mAh/1800mAh/850mAh

Application: PDA