Emisar D4
With battery (and 18350 tube) a tad bit heavier than your limit, but I would think it’s the smallest/lightest (and brightest) in its class on the market.
A light - in size - like the new Klarus Mi1C or the Olight SMini would be good to have that weight (± 60g), but they only take 16340… :person_facepalming:
Manufacturers should listen/read more of what is said here !…
EDIT: Even the Astrolux E01 has 60g (+ battery = 85/86g, just like a S2+ without clip)…
If the Weight and size is that important to you, i think it is inevitable that you mod an existing light.
I managed to enlarge the inner size of an eagletac D25c just as much to fit an 18350 inside.
This in combination with a fet driver and an xp-l2 made it into the smallest pocket rocket i own.
Including the battery its weight is no more than 48 grams.
As you mention……
The weight is not 40 grams,
the correct weight is 52.
I was not anywhere near a scale, relying instead on the weight specified by Illumination Supply, where I purchased my light.
On AliExpress you can find super cheap (<$2) skywolfeye flashlights that use 18650s, they have wall’s thin like soda cans, possibly fake or super old cree emitters, but I can’t really recommend them
Although it has the reflector and not the TIR, that wouldn’t make the difference in this case.
The final weight with battery is above 86g (with a Keeppower battery, that is lighter than an Aspire), meaning that only the body of the light will weigh more than 60g. And that was the limit asked by Pete.
EDIT: BTW, has anyone ever seen this light/project ? I guess it ended in “nothing”, but this was a pretty light (and they had others) :heart_eyes:
It was from “helioslight”, and I guess this is not the actual “Heliuslight” (it has some posts and threads here on BLF) Helioslight - Most powerful Key Chain Flashlight. | Spicytec
Anything more than this, and it becomes impractical when attached to a cap visor for extended walking, in my experience. And I would like more runtime than what a typical 16340 cell allows. 2 hours of runtime at about 300 lumen output would be nice.