Yes. It uses three of them, and the charger will charge the smaller 18660s, too. The sleeves to use the smaller batteries came with the light.
Since I already have my long burning, well regulated, indestructable AA and AAA Fenix lights, like the LD12 which will run at three lumens for 97 hours on a single AA and the LD22, and many others, I can look at more 18650 lights such as this one.
What do you think of these run times, and numbers?
![Image and video hosting by TinyPic](http://i45.tinypic.com/33cbr7a.jpg)
![Image and video hosting by TinyPic](http://i45.tinypic.com/289j7si.jpg)