In this situation, you need to use the adapter to directly charge the robot, it should be noted that after the robot prompts the charging is completed, it still needs to continue charging for at least one hour, at this time, the battery inside the robot is charged to activate the external lithium battery, one hour later, the robot stops charging for one minute, and charges the host again. This can be charged normally, if still not, please follow the above operations three times, you can fully activate the battery.