Just got my new 1300mah auto DAV last night. Charged it up overnight, put one of my favorite tanks on and just gave it a go....DOH! I cant believe this but it has really short cutoff. I mean REALLY short. I actually used a stopwatch and did it like 20 times. Best I could get was 4.8 seconds!! I know it resets immediately and that I just have to wait a millisecond before inhaling again, but c'mon! I HATE cutoffs and am not a happy camper right now