Sorry I made a duplicate, Ginseng already links you to that old thread from his reply post.
I meant this
Did the 2C mag mod other old thread that Ginseng discusses a source for some other bulbs that maybe of interest to you.
Remember that using overdriven bulbs at around 10w-12w or more, may melt your plastic reflector. /ubbthreads/images/graemlins/frown.gif
Which was linked from this thread
WelchAllyn Bulb Usage Reference. Hehe, this will take you a few days to read, and may confuse you almost as much as it did me, LOL
I recall there is yet another thread discussing the KPR112 and other bulbs in a Mag2C, can't remember where? Maybe if you do a search on bwaites' posts for the past 6 months, maybe he posted some recommendations on another thread???
So you have a number of different bulbs you can try without spending too much money.
But, if you want rechargeables, instead of $1 for CR123a's, you can buy 3 of JonSidneyBurly's R123 at $25 each !, and a charger for them. Then you have 3x3.7v = 11.1v total, instead of primary 3 CR123a's which are 9v total. No one has tried the R123 for multicell incandescent mods yet, the R123s have not arrived yet.