Ok - It looks like I may have gotten the correct resistance at least because there IS a sticker that says, "510D 2.0 ohm" on the box lid, though I think a previous responder said his said "510 LR" or something to that effect. I'll have to measure the resistance at work tomorrow with a meter to confirm and use an inspection microscope to look for the marking 'cause I don't see one with the naked (albeit old - lol) eye.
That all said, I reckon I should have mentioned that I'd initially used it with an m401 (2.8V) batt
thru an adapter. I'd hoped for a better hit than usual with standard, approx. 2.8-3.0 ohm actual measured resistance, m-series atties. Wasn't very good and there were a lot of air leaks, too, that made the draw way to light and airy for my tastes. Sux having to wrap your index finger around the connector joints trying for a "carburetor" effect to get more vapor and
throat hit.
So...I'd also bought a real, live 510 batt to used with these if the adapter bit was no-go. I built an adapter from the 510 batt to my m-series chargers and was finally able to get it charged up. Verdict: One HECKUVA lot better! The higher voltage did the trick...which makes me wonder even more about the actual resistance of the
coils in these. I've modified m-series atties by removing a turn and a half from the coiled nichrome wire and those have been super good vapor makers with great hit. If the "Boges" I got are really "2.0 ohm" atties, they should have noked like a freight train on an old western movie. More to come after I get my hands on a meter...
My only complaint using this carto - whatever make it is - with the 510 Joye batt is that it is noisy as all getout. LOTS of snapping, crackling and airflow noise. Makes it hard to get away with "nokin' in the boy's room" at work without someone hearing all the commotion since they can't smell anything.....well, other than the usual odors from that sort of location...LOL!
c-ya,
Rick