Options for UV flashlight without going LiIon

Here, have a look at the reviews of the usere mfm and Haggai:

Both feature the Tank007 TK 566 365nm edition, which seems to be good, and uses 1xAA. You can get the light over at Manafont.

http://www.manafont.com/product_info.php/tank007-tk566-haiii-365nm-money-note-watermark-detective-uv-light-1aa2aa-p-4435

Or you could build/modify a low voltage drop in and use the 2xAA compatible Solarforce “L2r” (which isn’t the original L2r any more but works nonetheless).

If you want a cheap 17 mm driver for 2xAA, I have successfully used this (single mode, ~700 mA) :

http://dx.com/p/1-5v-4-2v-3w-cree-circuit-board-for-flashlights-16-7mm-5-6mm-25505

Happy modding!