Hello. It does not measure resistance when the button is pressed, "fire" (can't a video file to attach, more than 10MB), and of course does not supply power to the atomizer. And it is not only battery change, ie: You've used the mod, then put the mod on for example 20 to 40 minutes, the mod went to sleep, you want to use immediately - and he again doesn't see the resistance. - this is the main problem. Other dna mod, this is not a problem. They give power to the atomizer when you press "fire", even before the screen lights up, i.e. instantly.