Hmm, don't mean to double post, but I can't find an 'edit' option to add this to my last post-
I just opened my 510 and was looking for the same info as the OP. I'm going to let one bat charge until I leave work.. about 3 hours. Then I'll use that tonight to try it out, and charge the other overnight. I'll follow directions as far as I can without it being too much a bother.
I'm only a casual smoker, so my being anxious is just because it's a new toy, not out of need for the nicotine. I enjoy hookah, and often a menthol cig when drinking, but absolutely hate the smell afterward. I also want to try to get some of my heavy smoking friends off their analogs, and figure getting some strong juice and letting them try this might help them make the first step away from their addiction.