Hi smokie, I'm suffering here I love my joye 510 but....... I was wondering if you could give me some advice on the chuck I do joye 510 and battier just suck big time as you all ready know.I'm not even geting an hr out of my battiersi ordered xl haven't came yet but I love to vape and I guess i'm a heavy vaper. I been looking around and thinking about the chuck but I;m not sure what I need to buy or were could you give me some advice please. My atty are only lasting about 2 weeks for me Thanks Smokie Linda.