Hey guys! Recently bought a new DJI phantom 1 that was left in stock and i took it out for the first time today, completely new battery, fully charged not much wind but a bit chilly 6 degrees celsius. And i got about 3-4 minutes of flight time. I have bought 4 batteries, all were fully charged and my total flight time including time to change batteries was about 15 minutes. This cannot be normal? What could be wrong?