So, one of my eGo batts from a kit I got from a forum supplier, bit the dust. In a big way! So I replaced it w/ a xl eGo batt from goodprofets, and it rocks. I have been using this thing for almost 10 hrs and it is still kicking. But I was getting between 2 and 6 hrs at the most from the standard eGo batts. Usually only two. Did I get inferior batts from my original kit? Or what. I am vaping like I normally do, I think. Anyone have a similar situation?