Hey everybody. Pretty new to vaping, about a month and a half so far and I hate to make my first real post a problem question, but the online vaping community seems to be the place to go for knowledge. Here's what's going on. First, my set-up. I have 2 tanks. A Kanger Evod 2 and a Kanger Aerotank 2. As well as now, 2 batteries. and itaste vv v3.0 and a Vision Spinner 1300. My problem apparently centers around my 2 oldest pieces. The Evod 2 and the itaste. With the itaste, the thing when fully charged is only staying charged for about 2-3 hours tops all of the sudden. It used to go for 6 to 8. And all of the sudden, the Evod 2 won't work on it (gets no hit at all). Last night, it wouldn't hit for about 45 minutes, then all of the sudden, bam it started going like normal. Tonight, nothing at all. Changed the coil, nothing. So I switched batteries. Put the Evod 2 on the spinner and it works fine. Now, my Aerotank works fine on both batteries. So originally I thought maybe bad coil and bad battery? Or maybe it's just the battery, but like I said the Aerotank seems to work fine on it. Any ideas? Bad Evod 2? Bad itaste? What do you think?