@ Mquinn, I suppose they do:) ... Ron, I do have one at home... but this happens intermittenly... I can tell the voltage is correct by the vape itself...Ive been vaping on it for a year or so now. I kinda know this thing. But the times it has happened, it was mid-vape, or towards the end of a vape(draw), and POOF! ..... makes me nervous, especially after reading "my mod blew up in my face" stories. What I don't understand is how can the atty make that much air volume???? Im no noob, coming up on my 2 years vaping......never heard of , or seen anything like this....... and for it to do that and NOT burn up the atty?? Bizarr.