Looking the the various PCC's (Personal Charging Cases) out there, and they all seem to hold 1 battery and 1 atty. To me, I would think a PCC should hold 2 batteries, so that you can get your whole setup in the case for when you go out. I really want one, but I am trying to get away from having a loose cig in my pocket. If they held 2 batteries or even 1 full e-cig and an a charging battery, I would think they would be about perfect...