What is the life expectancy of a Zeus? Mine (2) are about dead - 1 won’t charge at all, the other takes 10 minutes to turn green after just 1 drag. Both draw r e a l l y slow, as if they’re about to die. I know there’s a 1-year warranty on these, and that led me to think they’d last, well, at least 1 year. But these are 5 months and 4 months old, respectively. I don’t consider myself a heavy vaper, so I don’t think it’s over-use. Would like to know if this is normal, or not.