Thanks Fellas I have a Pitts Python that I run 2, 2 cell 3000 mah lipos striate to a dual Miracle switch then runs to receiver then from receiver run a dual kill switch regulator to my ignition for the DLE 50cc the plane runs 8 HV servos, I really would like to run 1 lipo on my Extra so I can keep the wait down as above its running 6 hv servos so I really just want to know what lipo would do the job for 5x15min flights.