shipping still puts me off and it still will work out more $$ for me but other,s might be intrested.
I don't have the extension for 3 18650, but I can try it with 3 CR123's (also don't have 3 identical 16340's).
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Actually, 3 primaries is only 9v, not that much better than 8v. I'll try it w/ a 18650 and the two flame 16340's I have if I can find the second 16340.
Ok, found everything and tried w/ 2 16340 and 1 18650 (12V total). 2.6A, vs 2.73 minimum (quickly rising to 3A) for 2 cells (at max 8.4v). Quite bright, about 50% more light on the meter. Suspect just going to DD? Not going to try runtime, given this isn't exactly the safest setup for it, esp since I can be absentminded sometimes.
rising to 3 amp quickly she might smoke
try the run time test i did on 2 x 18650,s
You tried 3 cells on the SR3800 rev 0? The 16340 are going to sag man, so not sure what is the real voltage, but we'll make do. Main thing is that it does 50% more light on meter, that's the bottomline. 
Remember Thommy? He has a SBOMZ triple XM-L, the only guy i am aware of with the SBOMZ which takes 4 cells with all the happening extensions. 3 cells it's 1.77A, 4 cells it is 1.3x A. But he mentioned it could not work on 2-cells. He ain't posting nowadays, after he received a DOA of something from Manafont (forgot what is it)
The Trustfire TF-3T6 reports the same light on 2 or 3 cells.
What I mean is that I measured it @2.6A at 12v on the cells total. The 2.7/3A number is for 2 cell (min 2.7A and goes to 3A pretty quickly, before voltage even drops to 8v). I might charge up the cells to full (12.4v or so on my undercharging chargers) and see if it goes up (DD) or down (regulation).
2100 already did a lot of runtime test for 2 cell. It goes to like 4A+ towards the end until it has some kind of low voltage cutoff.
The SBOMZ has a buck driver, no boost. Entirely different to these.
Ok, if anybody wants to get the 3-cell TF-3T6, can add $2 for the extension at CNQG. So it's $47. I think if you ask him to test, he will test for ya....he's a flashaholic man. :D
Buy more then of course it could be a few dollars more for DHL shipping and stuff etc. Sometimes i even see EMS to be cheaper than registered air. MF does not do no negotiations.
Indeed they are but they are the 2-cell version. I got the 3-cell version which can be used in 2 or 3 cell configurations for more options. Looks like a good price though.
Cool.
Sorry if I missed the info, but would the 3cell config be any brighter than the 2 cell? Or would you just get additional runtime?
As I recall the 3-cell is 0.5A stronger driven as well as increased runtime plus you can remove the extension and run in 2-cell mode if you like.
The driver decreases current as more cells are added. It's the same light btw.
I disagree about that, the higher the voltage the less current needed, less current less heat.
The 3 cell would be the best pick and I would be careful about eBay lights and be concerned about genuine products
Now THIS is an interesting find. Thanks to Jarosf for reporting it. Welcome to BLF by the way, nice contribution to start!
So how does this work with 4xAA? Do you just jam them in there, or do you use some sort of container? Sorry, I don't own this light (yet), and I'm seriously interested in it now.
@Fran: Why can the 4xAA configuration only be used with the 3-cell version?
What about 1x18650?
So, where to buy this at if I want the 4xAA option? CNQ or Manafont?
Thanks a lot!
My guess is that the 4 AA's are in series, so the 3 cell would be needed for the length. I too am very interested in this light. Ebay also sells the 3-cell version with the extension, but it's $57.00.
Ah, right, I bet it's for length. I didn't think they would be installed inline.
What about the DRY light? Would it be possible to jam in a bunch of AA cells in parallel?
Last time I checked, Watts = Heat, not Amps. Current * Volts = Watts.
10Volts at 1 Amp = 10 Watts
1Volts at 10 Amps = 10 Watts
With LED's of today, roughly 80-85% of that energy will be wasted as heat, so a 10 Watt LED will generate about 8 or 8.5 Watts of Heat. Volts and amps are irrelevant by themselves, it's the product of them that matters.
PPtk
The 3x XM-L DRY is a no-go due to voltage constraints.
The Long-Run DRY single XM-L could potentially work, if someone made a series 4 x AA holder.
your talking emiters and basic math, i thought we where talking about the driver.
why does 3 x 18650 draw less then 2 x 18650,s and why does 1 x 18650 draw more then 2 x 18650,s
as in example draw 20 amps at 15 volt through 14 awg wire it will get hot, but draw 20 amps through the same wire at 24 volt it will not get hot.
there is other examples like with 24v 4wd,s and 12v 4wd,s the diffrence in wiring and thermal fuses for extra lighting they didnt teach me in collage.
another example is voltage sag thats followed by scaling up in current draw.
im going to try this tomorrow, it seams the lower voltage has increased the current draw