I'll call it the Troll
Maybe the Stache.
If you figure:
Flashlight - $32
Switch - $5
Battery holder - $15
Cells - $16
2x PCB's - $6
Scope mount - $13
You may as well go buy a MagicShine from Geomangear for just shy of $100 shipped. This is a tad more "spot" than the MS with a slightly tigher hot spot...but I think the runtime and volume of light are about equal. The MS may be a tad brighter over the entire runtime b/c it uses a buck PCB and a 7.4v 2s/2p battery pack. Still though...they seem to look about the same side-by-side initially. With a 3.5hr runtime...I doubt I'll notice much dimming in either light. I don't normally ride that long at night.
If I get the bug to build another...I'll probably buy a buck PCB and do the 7.4v battery pack...I just wanted to see how these $3 boards perform. I've got a p60 host laying around that I could use, i guess.