tom, i can attest the same findings comparing the polyquest 3700's versus my new litestorm 4200's (while litestorm is just a brandname hyperion uses for the TP2100's in configurated packs, i guess). i think there's one more factor missing in the solution of the equation: that's inertia, or kinetic energy, if you wish to call it that way. smooth pattern flying is full of that stuff. and if, at a given throttle position, your airspeed is 5 mph higher in level flight while entering a climb, you need less and shorter power bursts to accomplish that climb. and in p5 you have how many climbs..ah, a lot..! so 300mAh less for the whole flight makes perfect sense, that's only a few per climb, and the longer that weaker batt gets beaten up, the lousier it performs and the more you continue to shove that stick forward. you could explain the whole phenomen not monitoring your flight pack but simply monitoring your cumulated throttle position, bet?

roger

btw, barye...what monster are you chasing through the sky, eating up 3360 mAh in 8 min flying time...?[>:] i use exactly the same amount as tom does, but it took some time after daddy took the yamada (t-bird...) away