I have made a discovery with the njoys. I actually have a shop that i go to here in chicago to buy my njoys, and i noticed that my atomizers(or so i thought) we crapping out on me after a few days. So i replaced about 3 of them, finally when i got the last one i made a discovery, i borrowed my room mates white battery(i had a black one) and all of a sudden the atomizer worked again, so i went back to the store, and the owner flipped the battery around on some of the ones i had brought back and certain batteries worked, so i replaced my two batteries, and havent had a dead atomizer since.