I'm currently using a KGO, which I think is 1100mah, and 3.7v. It'd be nice to have a passthru to keep at work so I can vape from one of the many PC's in my office without killing power from my KGO. I've found a few here and there online, but run into some reviews saying they didn't last long, etc. If it has a detachable battery, that's a plus, but not required. I would prefer to stay at 3.7v at the least and have a 510 connection to utilize my current tanks and cartos. I thought I had read a while back that someone was making a passthru KGO version sometime, but I don't guess it happened. Any input is appreciated!