Okay so here's my little vaping back story. I started vaping two years ago to quit smoking cigarettes and towards the end of that run I had upgraded myself the the SMY God mod. Having the 3 batteries really seemed to make the thing last forever so from my knowledge (very limited) this would mean that the 3 batteries ran parallel since it increased the battery life.... Or can running in series increase battery life or just overall output? ..... Anyways things happened and I found myself smoking cigarettes again for six months and I have just recently bought the evic VT. Love the temp control and now couldn't imagine vaping without it. I'm starting to have some issues with it and I'm wanting to upgrade again but I need something with temp control.. And the batteries parallel I think? Because I'm looking to get good battery life. The two mods I've been looking at are the IPV 3 Li and the snow wolf 200. I've heard that the snow wolf isn't as accurate when it comes to temp but I like that it doesn't use joules as a unit like the IPV device(im sure I could figure this out just a minor setback) any answers to any of my questions or suggestions are highly appreciated!! (First time poster)