Take a look at this bad boy. Don’t have any info for pricing, but it looks to be EA4 size with with 18650 battery and the new MT G2 led……WOW!!! http://www.eagletac.com/html/sx25l3/specs.html
With the little experience I’ve had with the MTG-2 I’d suggest that 4xAA would have a hard time driving this led because of the 6 volts required at the led. If it was driven at a low current it maybe ok with AA’s.
I imagine in a few months the market will have bunches of MT-G2 lights out there (with up to 5000 lumens estimates on them) and prices will come down as the clowns clones pop up all over. Send in the clones...
Match measured a P0 MTG2 at over 3100L, and that was on an aluminum board. The rated lumens on this one of 2300 is right about in line with a 3-3.3A drive current, I'm going to guess the 'turbo' mode is around 4-4.2A. Those numbers depend on how much attention they've paid to the thermal issues, but are completely plausible given the battery config used here. Similar claims from a light using a 2S2P config are... well, suspect.