7.4V 850mAh Rechargeable Battery for Ei-Hi S800C Quadcopter Drone 7.4V 850 mAh Replacement Rechargeable Lipo Battery for Ei-Hi Large Size S800C 2.4GHz 4 Ch 6 Axis Gyro Rc Remote Control Quadcopter Compact and solid body ensures the battery is more stable and shockproof Direct replacement battery for Ei-Hi Large Size S800C 2.4GHz 4 Ch 6 Axis Gyro Rc Remote Control Quadcopter, no modification is needed. Upgraded battery offers more power, more safety and higher performance for your quad copter. Enjoy over 10 minutes flight on one charge.