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.
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:
My 2 cell 8V series power packs
are suitable for use with Stenlights with a suitable XT60 to Tamiya
connector which can be made up from a scrap Sten battery
Up to 40% more burn time from my new tech power pack
and at a lower price!
Stenlight lamp converted to robust XT60, my power
banks go straight on.
£40 plus postage
for 2 cell power bank.
Lamp conversion plus
the power bank is £50 plus postage.