I have a manual 510. Recently all my batts when the button is pressed for a while, the LED light will just shut off. Does this mean that it's doing that safety thing to not burnout the atty? Funny thing is, I'll wait a few seconds to a minute before I vape again, so I don't know if it's doing the atty safety thing. I also don't know the exact time limit I hold down the button for, maybe I'll update this with that info later when I find a timer..