Im looking for a small light with little stepdown. I mean like 5 to 8 min at 1000lm.
I dont need one hour of runtime so one 18650 is enough.
Compact size needed.
I had S2 custom with a17dd and xml2, S2mini, S3,…i sell them.
Now im running olight S1 cu edition always in my pocket, a manker E14 nichia with Efest or a klarus G20. As everybody i own the L6 but not too much use of a big thrower.
I dont have read all the review on blf but do you have any inputs ?
Nitecore concept N1, ASTROLUX S42, astrolux k01, manker E14 II,…
if you have any numbers about runtime without stepdown on high levels ??? Turbo not needed as it always stepdown
What conditions will you be in (cool breeze? Standing still indoors?) and how much heat can you tolerate?
An S2 sized flashlight with 8x7135 regulators (3ish amps) should do 900+ lumens consistently. You can test this with lower settings on your A17DD driver… it will give you a ballpark to determine how feasible it is, though a linear 7135 regulator is the way to get consistency as the battery drains.
Your only problem is heat, you’ll want to test this, you may find an S2 burns your hand or triggers thermal regulation depending on the setup, after outputting 1000 lumens for a while.
There is no way around this. If you can’t/don’t want to deal with the heat produced in an S2 size light, you’ll need a larger light.
Convoy C8 is big enough to do turbo indefinitely without overheat. I have less experience with the M1 or M2 but they are in-between sizes.
From what I’ve read here and saw in some reviews, Zanflare F1 turbo (+1200 lumens) automatically drops after 30 seconds. You may double click to get the turbo again, and again, but I don’t know if it doesn’t get too hot to hold.
Maybe High mode can hold on a bit more, but I don’t know if it holds that time you need.
If you want, take a look at one of my favourite reviews of the light. Long, but complete!
The E2L will heat up just like the S2. It actually weighs less and heat reaches the outside faster because of the design. But the heat will build up the same over time. The limit is how much air touches the outside of the flashlight, to carry heat away. The E2L and S2 have very small differences— only a larger light would be better.
There is no waytoruna small light like the S2 at 2,8-3A without it getting hot
Maybe a longer tube
Thrunite TN12 (of its brother with charging)
I did a review on a nice Darktort tube that too is longer and has some cooling fins
You have to make a choice, add length or width or run lower amps (I like the S2+ with 4 7138 chips, that stays at a safe temp on highest mode and for a longer period.)
I think a Jaxman E2L host with 3x XPL2 or XPL HI, and H17F driver could sustain 1000 lumens for 5-8 minutes. The head of the light would get very hot, but it has plenty of good heatsink fins and you don’t need to hold or touch the head to operate the light.
No way with S2. “DQG Tiny 26650 III” is thicker than S2 but also much shorter and outputs solid 800 lumens on high mode permanently (and 2500 lumens on turbo for a minute).
Yeah the Sofirns drop at 3 minutes. I have a run graph of the SP31 here:
You can manually bump it back up but I didn’t graph for that. But it could do the 5-8min you are describing handheld without getting excessively hot. I walked with it in approx 75F (24C) weather.
Lumintop SD mini will do the job perfectly, no step down from 1000 lumen,at least with my sample. There should be termal regulation but I haven’t seen any after 10 minutes on HI. It will get hot but not as S2 or similar shaped lights.
Price on GB was something like 25$ for xpl hd
Yeah it’s little beefier but surprisingly compact, better feel in pocket then any other longer lights. Plus USB charging as well, but only 500mAh and stops to early at 4.10V……
