I rec my p4 yesterday. after some fiddeling with I finely got it to come on line and fire up. charged the batterys and did all the up dates that there was. it has been raining here all night but there was a lull in the rain so out I went for the first flight everything loaded up with out a hitch. did the coumpas dance and got the green light. started the video and took off. flew around and got the 30 percent low battery warning so I brought her in and hovered and at about fifteen percenta got a warning this a/c will be landing in seven seconds. I landed it and that was at 21 minutes and five seconds flight time. now I have never gotten a flight time like this on ether of the p3p that I own. I am pleased with it.