I swopped my p3a for a new one with the new motors yesterday, been out this morning with a full battery and did two flights over a dam in Sheffield, first flight was 17mins and the second was 11 mins. (came down and landed to change my camera nd filter) so that's a total of 28mins with 20% left in the battery. I think the motors use less power than the old ones. it is a brand new battery though.