Hi ! I am also digging mine ,but the battery failed twice. First time VDN wanted to return the whole unit on my expense which would cost the half of the value,so i told them just to send a new battery. New battery failed right out of the box in the very same way the first one did . I said fuck it and screwed it to my 3 battery mode with TUBO software and it is freakin great ! I wish it had less spillage, make sure you inhale very slowly, i use mine attached with u shaped adapter to water pipes and it delivers nice hits, i guess i should get some of the wider cup options on the other models this company offers ,but never again buying a battery unit from them ,the atties are great though ,do not get me wrong !