This is the 850mAh 1S 3.7V LiPo battery for the Vista UAV Quadcopter from Dromida.
Features: Stock replacement battery recharges with USB type charger (not included)
Includes: 850mAh 1S 3.7V LiPo Battery with red JST Connector
Rated Voltage: 3.7V
Continuous Discharge: 25C
Watt Hours: 3.2wh
Dimensions: 2.2x0.83x0.27 (56x21x7mm)