Speleo Technics NiCad and NiMH powered bulb caplamps
All of my lamps are designed to work with Lithium Ion (Li Ion) power packs. To get the best out of the ST bulb models I can without reservation recommend the Retro XP conversion by Mike Hrybyk.

I used one of his earlier conversions before I applied myself to building lamps myself, this was quite a few years ago now. You will even find a review that I did on his conversion. Here is a link to his website:

http://www.mineexplorer.org.uk/ledlighting.htm



r the power packs.