The auto Ego battery has a longer cutoff, so you will not be annoyed with that. Better yet, it is an ego, which means 510 threading. 510 threads means that there is a lot more hardware available, unlike the 808 threads. It will not accidently go off. No more having to click 5 times to turn it on or off so that it doesn't go off in your pocket like the manual ego batteries. If you are a fan of auto batteries then we think you will love the Auto Ego even more!