The LED doesn’t light when the battery level button is pushed or the battery is not recognized and the aircraft can’t take off

In the Airpeak Flight app, identify which battery is not recognized, then follow these steps:

1. Remove the battery that isn't recognized, wait approximately 30 seconds, and then insert it again.
2. Remove both batteries, and insert each into the opposite battery slot.
3. Fully recharge the battery that cannot be recognized, and then insert it into the aircraft again.
   
   Note: First, insert the battery into the battery slot near the power port to recharge the battery pack. If the issue is not resolved, then insert the battery into the battery slot farthest from the power port and try recharging again.