RE: I just bought my Herr little extra...
Battery consumption isnt linear...I would try the 3 flights and then say a 4 minute flight (1oz) and check, as I stated earlier mathematically you could get 5 flights and land with 0 mAh but it doesnt work that way....and it makes a difference if you float around in circles or doing 3D stuff, but you said wide open...It is a fun plane though isnt it!!...gotta get mine out and play with it some....Rog
btw are you deadsticking in to determine your flight times?