What is a common indication of low battery during a drone flight?

The presence of warning lights or signals from the drone is a common indication of low battery during flight. Drones are typically equipped with built-in safety features that alert the operator when the battery level is becoming low. These alerts can manifest through various forms of visual signals, such as flashing lights on the drone itself, or audible alarms. This is designed to ensure that the pilot is aware of the impending need to land the drone safely before the battery is completely drained, which could lead to crashes or loss of control.

Other options may involve situations that can occur due to low battery, such as sudden changes in altitude or disconnections from the controller, but they are not as straightforward or reliable as direct warnings from the drone regarding battery status. Therefore, recognizing warning lights or signals is essential for maintaining safe drone operation.