No quad-rotor drone battery this size can last for hours; it's just not possible with the specific energy available in batteries. If the entire drone were a bat

No quad-rotor drone battery this size can last for hours; it's just not possible with the specific energy available in batteries. If the entire drone were a battery (i.e. the rotors and housing were mass-less), it could last 45 mins. I expect battery life to be around 20 mins.