Specification: Voltage: 3.7V Capacity: 380mAh Battery Type: Lithium size:37*20*7.8mm weight:9.6g Features: 100% brand new and high quality High quality and durable in use. High capacity, enjoying much longer fly. Easy to install. Can act as a spare or replacement battery for your quadcopter, to increase the flying time. The instruction for charger: 1.Please inspect the batteries for any damage or swelling before charging 2.Plug all the connector of batteries or the connector of the converting wires into the port of charger completely 3.While the light is off ,it indicates that the batteries are fully charged.While the batteries are full,Please unplug the adapter at once Wide Application: No modification necessary! Exact replacement for Hubsan H107 DFD F180 RC Quadcopter Drone and other.