I keep 9 batteries. # in the mod, Three I'll need later that day and the last three if I have to stay over night somewhere while the first 6 are charging. I run 3mil nic, 80/20, and my juice comes from Vape Connexion. Yes its spelled that way. All juices are built while you wait. All are clear. To color additives so its as clean as can be. I enjoy two flavors mainly. Lynticulus and Saiyon Fart. I haven't picked up my Tobacco pipes in 2.5 years and sold them all. I go thru a lot of juice. At this time with the RTA I run at 110 Watts. It makes me feel like I'm still puffing on a pipe with all the vapor that comes out.