I am building a mod using a 18650 battery. I have tested the voltage from the bottom of the battery through the button (switch) into the 510 atty connector and I'm getting full power (it actually reads slightly higher than 3.7v -- 4.2v). In any case I am getting no vapor (or even sound) emanating from the atty.
Does anyone have an idea as to what is causing the atty to not work given the above? I am using attys that I bought at madvapes that are "sealed" 510s.

Does anyone have an idea as to what is causing the atty to not work given the above? I am using attys that I bought at madvapes that are "sealed" 510s.
