Yesterday I did some grass driving. On 2:30 minutes apx 30Wh was spent => I should be able to drive at least 10 minutes. Peaks of 130Amp, temperature rising quite linear during those minutes, but I still have no cooling in place.
However did the test result in a a few stripped gears. Clearly from the landings.. I think it was the ordinary hardened gears, and not the bullet proof ones, but I'll see later today.
I'd have to say that the voltage is keeping up very well on this 14s1p3300mAh Hyperion packs..