do NOT order that 18650. Thats the old one and there were alot of problems with it. Most vendors stopped carrying that 18650 bc of all the problems. I have the 14650 and its a lot better. I havents had the slightest problem with the 14650.
If you do want the 18650, the new one is out and its supposedly a lot better and they fixed the problems, mostly involving the switch. Sweet-vapes.com has the new 18650. Thats one of the only vendors Ive seen carrying the new one. They only have it in chrome, but its supposed to be alot better. Most people use the 14650 bc the 18650 had so many problems.
I only use cartos on my E-Power. The Ressurectors work awesome. You can also use a tank on the E-Power if youd like. I dont like the bigger
tanks on PVs like the E-Power, Riva, kGo, eGo bc it makes it really top heavy. The 3.5ml Smoktech tank looks good on those PVs though bc its not as big. It works well