I have been vaping on this for a month now. Today, I had been vaping and a little while ago, I picked it up to take a drag and nothing. No button light. No coil burner. Nothing. I clicked the button five times and still nothing. I switched batteries and started using the other one. So I put the other one on the charger. I checked on the charge every few minutes and all seemed to be going well. I put my hand on the charger and it felt pretty warm; almost hot (is this normal). I went ahead and pulled the battery off the charger and the light blinked. I tried to turn it on and it turned right on. So I went back to using that battery. Is something wrong that I'm missing or was it just a fluke? 