I torture tested my v2 today. I went to the track with 3 4s packs. 2 8k 15c and 1 5k 25c. I ran back to back to back for 6 hours straight. esc never got hotter than 135, motor stayed at 150 steady all day and batts were in the 103-107 range. This puts my v2 at over 40 hours of use now!