what are the symptoms when a battery dies for good? I've had this 65 mm auto around 4-5 months I'm guessing. have used it a good bit. when I inhale, it lights up like it should, but nothing happens otherwise. no vape, no activity within carto. I try to charge it, but the tip doesn't light up like it usually does when charging. so it won't charge basically. is this the end of the line for this battery?