3 piece versus 2 piece?

[deback]

Well, the reason you don't have a PCC is because you have what appears to be an ego or some other big similar thing. I have a 510, so I need a PCC or I'd only be able to use it for a few hours. Also, I must take really short drags. I pretty much drag on it just like a real cigarette.

Yea, if I was using the standard 510 batteries, I'd be using a PCC. I quit using a PCC when I received my first two (genuine) eGos. I ordered the eGos because I wanted longer battery life. Then I ordered more eGos, because I wanted more spare batteries -- and more packages in my mailbox, which I've gotten used to. Now I just rotate all the eGos and charge one when the light flashes 20 times -- usually one or two batteries each day.