Here's a comparison with an eGo and a Hello 016.. and a quarter 

it takes 2- 16340 batts.. it is muti voltage device. dont know you would want to use any other batts in it..
Thanks for the answer(?) Doots. I was hoping to get more mahs than the assorted 16340 size batts provide, especially if I would drain them at 4.5v-5v or more. How long do you get and at what voltage?
Thanks hyperspace, I am looking around Lighthound for batts, no luck there. I'll try to find the black Trustfires.I get around 12 hours with the black Trustfire batteries.
Thanks hyperspace, I am looking around Lighthound for batts, no luck there. I'll try to find the black Trustfires.
Can you use an 18650 at 5+ volts? If so, would it have better battery life than the two CR123's?
SHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH they are watching
Buzz
How would you get 5+ volts out of one 3.7 volt battery?
Boost converter - Wikipedia, the free encyclopedia
I may be dumb but I'm not stoopid.
I'm no electrician, just wondering if the Buzz's POT could work as a step-up converter. Thought I remembered seeing the 18650 as one of the batteries the Buzz could use, but sadly I'm too lazy to look it up so I'll just guess that I'm wrong about that.
I like to have only one type of battery to manage anyway so I use the Buzz for my happy-performance-vaping and a mini vapestack for a small pocket-able 3.7 volter that I can just stuff in my fifth pocket and not have to have a different type of battery to manage. Still curious about the 18650 with it's mega mAh anyway.
A boost converter must be something that's not easy to put in a mod because I haven't seen one that has it.