Features:1. It is Li-Po Battery with for MJX X300 X400 X800 4CH 2.4GHz 6Axis Gyro RC Quadcopter2. Lightweight、 durable、 practical and convenient to use3. High capacity and long life span4. 100% brand newSpecifications:1. Model: X8-0012. Battery Capacity: 750mAh3. Battery Voltage: 3.7VPackage included:5 x Lipo batteries5 x Charging line1 x USB