Diy battery mod with 1.3 turnigys give me 19 min on the app but i'm thinking its so heavy with (2) lipos , flytrex, & antennas that the flight time is not a big improvement! I gotta go back to the drawing board and lighten this bird up! 2.65kg now. What are you currently, or for you guys that have moved on to p3, have you used for the lipo's ?? Amps & weight vs flight time?