How many cigarettes does an E-Cig cartage equal? I read something like 15 to 20 Cigarettes BUT for me it seem to equal about 2 to 3 packs. I then got to thinking about it and realized I was smoking differently , I mean with a real cigarette you got burn time . I figure about one fourth of a cigarette just goes up in smoke never being smoked unless you are working then more like a third. Am I figuring right?