okay to clarify , the samples i got from the one trading company are a perfect match, and the batteries under no load measure at 4.2 volts and are 1300 mah, i should have my sample from kanger this week, there site is difficult to tell the difference between all their models , so I have about 6 different ones coming from them. and I have compared my sample so far to date directly to a nhaler model.I know what you are saying as far as being scammed , I have spent the past couple of months with my pulse on the ECF , trying to see the bigger demand and try to help out so to say with a higher demand product.I have had samples from many suppliers to date , there is one that I personally really like and that is the ECHO , and I might carry that one as well , that supplier was quick to respond and very fast in delivery to me. I know it is hard to separate the good ones from the knock off's. I wish I could just talk to Drew at nhaler and get the skinny on who to talk to over there to get it simplified .