So I tried my first battery and it smoked well for a few hits, then no vapor and the light starts blinking. I let it charge while I take the spare out with me, which has seemed to last for a good while without any charging. A few hours later, I come home, with the battery I carried with me almost dead, I put in the one that was charging, and immediately, it started blinking again as if it was out of battery. Did I get a fault one or did I do something wrong? It's not drawing any vapor at all and I just charged it for a few hours