I wonder how many minutes of flying times that those who own Iris+ with 3DR Robotics 5100mAh battery get. With fully charge I let it fly and stay at the same spot to check the duration of the battery with fail safe set battery voltage at 10.8vlts it just last for 8-9 minutes and it return to landing. I was told to set fail safe at the battery voltage 10.8vlts. I like to get more fly time and safe, what should I do. Is my battery wrong or setting to fail safe is wrong. Please let me know how many maximum minutes you gentleman got and how you did it.