+12000 is a guess, based on the assumptions noted. No way I know to actually test it, but I do believe it runs loooong....
My VB-16 variable light has a sub lumen glow at its lowest setting which is good for night time navigation with dark adapted eyes. My rough measurement is that it puts out about 1/1000 the full power (4 watt) light setting. Assuming its buck circuit has the same efficiency at all levels, that equates to an estimated run time of about 2000 hours off 2xCR123's at the lowest level setting.
The HDS/NovaTac minimum output setting (.08 lumens) lasts for 240 hours/ten days on a single 123.
To confirm that my HDS U60 ran at the lowest output level for 45 days (1080 hours) non-stop on a Duracell CR123A. It has an upgraded SSC P4 emitter, was probably putting out around .24 lumens (stock is .08 lumens).The HDS EDC actually lasts longer than the Novatac at the low levels. Thermal guy had a test showing over 13 days at level 16. which is .24lm. In my test at 0.08lm it was over 3 weeks give or take a few hours. An HDS EDC with an upgraded emitter is around 0.16 - 0.2lm at the lowest level...
speaking of... heres my new "Hoople" Head :naughty: that milky custom built to my specs. my goal was to get awesome runtimes on a 123 primary, not concerned with the brightness as im fine in low light conditions. 46 lumens for 10 hours aint too shabby for such a small package. not to mention the extra heatsinking so theres virtually no heat buildup. still has the Miser Mode, so ill have insane runtimes on the ultra lows. tacticool setup - max, ultra low, then medium (~30% max). on my fave 123 body, another Vital Gear. awesome light, exactly what i wanted, itching to put it to the test soon! always a pleasure working with milky too.
Tale of the Milky Tape:
Hoople
SSCP4 USVOH L2head UCL
AcornHC 138 'C-Corndogg' Firmware
Max 46Lm 10h / Med 14Lm 34h / ULow
Optimized for 1x123 Primary Cell
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this is one of the sexiest things you can see on a milky :naughty:
:twothumbs