I took my Mavic Air out the other day with three fully charged batteries (it is relatively new, bought it November). When I launched the drone my battery levels read that they were full but the DJI Go app was projecting my flight time at only 14 minutes. Checked all three batteries and it was the same with all three. This was not the case the last time I flew it. I took it home and proceeded to discharge the batteries and then recharged them. Launched the drone on the first fully charged battery and it said I had a 15 minutes of flight time. Did not check the rest. Conditions the day I flew it were cold, 45 degrees F ( 7 degrees C) and I had been hiking for an hour before I launched the drone. I also got a low battery temperature warning when launching but that should have fixed itself after a minute of hovering. Especially seeing that it really was not extremely cold. And, if that were the issue, then it should have be resolved when I flew it hours later in my house that was at 65 degrees F (18 degrees C) with still the reduced flight time on a full battery charge. Does anyone have any insights on my dilemma?