I am having a heck of a time. I love the way the epower cig works but the button broke. I got a replacement and ordered two more. All three of the new ones stay on and sizzle and burn up my cartomizers. I am so frustrated and don't want to spend more money on buttons. Need to find another ecig that gives power and give it a try. I have the Riva which still works great but does not give me the vapor like the epower does.