Holy Stone Spare Battery 7.4V 2800 mAh for HS720 GPS Quadcopter Drone
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Color Black. Original 7.4V 2800 mAh for HS720 GPS Drone
When charging, the charging indicator light of the battery will flash green quickly and the power indicator light will be red.
When fully charged, the green and red light will turn solid.
Charging Time: 5-7 hours