Centropolis
Enlightened
TK10?
Why are you so hung up on number of batteries? A RC-T5 takes two 18650's and runs 4 crees, although at fairly low power, for about 500-600 lumens (probably). Modded, you can get 1A per emitter, taking you to close to 1000 lumens.
A minimag also takes 2 batteries, but it's much smaller and easy to pocket, although a fair bit dimmer.
Some fauxtons take 3 batteries, but they're hardly large.
I forgot about this one since the P7 just came out
http://www.dealextreme.com/details.dx/sku.12060
What kind of batteries?
The WiseLED Tactical has an internal battery and is 1500 lumen according to them.