I ran 2 airtronics rock servo's, pt, with an m8 on spektrum and mine lasted a weekend easy. I never actually ran mine dead. After a race day at leisure with the quals and a main (my greevo = A MAIN) it would only put in 800-1000mah back into the battery. That includes the practice runs before the quals to. Id see if you can get a replacement if yours died in 1 race yesterday.