I ran my fastest lap with a IB3800 on a 3rd run motor. I recut the motor and went out with my best GP3300 pack and went just a tenth slower per lap.
Last pack I went out with my IB3800 deadshorted from first run and it still ran for 40 laps on a 12 sec lap. Thats some mad runtime for a deadshorted pack.
I am impressed with the packs for sure. I dont want to jump to comclusions yet-but so far-no complaints at all. They charged up normal with a 0.03mv/cell 6 amp charge all night long. Pulling in excess of 4350 mAh every time and peaking at about 133 degrees.