Gunslinger
Shooter
There are dozens of lights, all are made in China, some are private branded, I have them from 110 lumen to 3800 lumen personally. Some of mine have the cree modules that interchange the color, white, blue, green, red. All use the 18690 batteries and I run them between 2400MaH and 5000 MaH. I am a light freak and have too many, even my headlamps are 2000+ lumen...lol
Lets see the last one I bought was from Amazon http://www.amazon.com/gp/product/B010DHZ78Y?psc=1&redirect=true&ref_=od_aui_detailpages00
The light manufacturers in China will work with you on spec and private label for less quantity than you think, same with MDVR's, lots of fun stuff.
Dang 2000 lumens that dude must get hot?