I smoked cigarettes for 16 years a pack a day, one day while skyping I noticed my friend using a ego type battery and asked what is that. After a long explanation I thought well I have spent probably a grand on the little junk e cigs, not gonna mention names but if it comes from a big store it prolly wont help much….I use modified battery compartments with a 510 thread on top for my atomizer, other wise known amongst vapors as a mod. I now spend maybe 15 bucks a month to vape, I quit smoking 6 months ago. Two days into vaping, I threw away my cigs. I have helped a lot of people switch and now proudly own a vape store and the feeling I get from each kit I sell is worth it alone. First week of cigs I coughed a lot,it was all the gook in my lungs coming out super nasty stuff, by the second week everything AND I MEAN EVERYTHING smelled and tasted different, and in a good way, its like I have non been tasting food for 16 years! My doctor says I am in much better health now and my lungs look 100x better. My mother a 3 pack a day smoker for 35 years started vaping shortly after and we are both vape heads to the fullest now.