I'm using Ego-C 650mah batteries with Stardust Visions. Since starting to use the Stardusts, it seems like my batteries just don't last any time at all now. I can charge one all night, vape for 2 hours and it's dead. Should I be using a different battery? I don't care for the twists, they seem to last even less time. This is happening with batteries that are less than two months old.