Just tested with a fully charged battery with 99% life according to the app. I flew around pretty steadily and did a few high power ascends running the Zenmuse Gimbal and recording on my GoPro. Time to 1st low voltage warning: Approximately 15 minutes. Time to 2nd low voltage warning: 18 minutes, 30 seconds. 60 degrees Fahrenheit and sunny. 10 to 15 MPH winds.