I have had this 1300Mah VV/VW ego battery many times and they don't turn off unless you tap the power button 5 times in succession. However my new one turns off for no reason sometimes, which I don't see as anything more than a minor annoyance that I can easily ignore as long as it isn't a sine that it will wear out sooner than it is already destined to do. I know that no one can say for certain whether or not this is the case I just want an opinion from someone who knows more than me. I emailed the company about it and they have not gotten back to me so I'm not even sure if they would let me return it or not.