1. The charging box may run out of power, at this time you can connect the charger, until the battery is charged, the indicator light returns to normal;
2. If the indicator is faulty, put the headphones into the charging case and open the cover. Press and hold the button on the charging case until the indicator blinks, and then connect the charger to check whether it is normal.
This could be your charging bay running out of power
This is a normal charging phenomenon, does not affect charging