DJI t40 battery display authentication failed.

Are you asking about the certification failure of DJI t40 battery monitor? Authentication failed for the following reasons:

1, DJI t40 battery is not installed correctly: Please check whether the battery is installed correctly on the UAV to ensure that the battery is firmly connected and not loose.

2.DJI t40 sensor failure: UAV sensor may fail, resulting in authentication error. In this case, it is recommended to contact DJI customer service or professional maintenance personnel for more detailed fault diagnosis and maintenance.

3. The battery power of 3.DJI t40 is too low: If the battery power is too low, it cannot be verified. Please charge the battery first to make sure it is fully charged.