If you have a big chuck you could go to just about any store that sells camera's and pick up some cr123's, they're usually no more than $10 for 2pk just don't chain vape because they're not pcb enabled.
<rant>
I got my chuck on the 14th and I'm STILL waiting on the batteries! All my crappy 901 batteries died a week ago so I'm on normal cigs. Everytime I have to buy another packet of cigarettes I rage to the heavens. I am not thinking rationally: "Are phone batteries 3-6V? is there any way I can hook this up to my pv?"
</rant>