The drone aircraft doesn't fly for as long as it used to

Check the following:

• If the ambient temperature is low, keep the battery packs in a warm place, and insert them into the aircraft just before the flight.
• The flying time may become shorter than normal under the following conditions:
  • When a payload (external device) is installed on the aircraft
  • When you fly the aircraft in an area with thin air
  • When the battery temperature is high due to a high air temperature or having recently completed charging
• If none of the above applies, the propellers may be damaged. Replace the propellers and then fly the aircraft again.