I've been using Vapor4Life juice and batteries for over a year, and I'm very happy with everything.
I recently decided to try a tank. I bought the 3.5 ml dual core tank. It worked really well for a day, then just stopped. Now whenever I try to screw on a battery the light blinks, and I can't create vapor. I tried several of my older batteries. They all fit fine, but I have the same result, I push the button to create vapor (I use manuals) and nothing happens. If I put the battery on to a regular cart, no problem at all.
Any idea what I'm doing wrong? Thanks!