Feifan 2pcs 2S 7.4V 2000mah Battery for Kaideng K70C Sky Warrior Drone with AC Charger and 3in1 Charger Cable ORIGINAL BATTERY: This is the original battery for the K70 quadcopter ADVANTAGE: This battery charger set can charge three batteries one time HOW IT WORK: Light in Red when charging, light in Green when charging complete Package Include: 2 K70C batteries and 1* AC charger and 1* 3in1 charger cable