Yes I live in the southern u.s. Nimh have other advantages too.
If you find Nitecore EA8 and swap led to XPL HI can reach 700 meters.
Other option is to find and mode Convoy Х3.
Manker MK-41
Interesting thread. I was just thinking about posting something similar as I have come to prefer multiple AA lights for my glove box (allows L91 lithiums with the option to run plain alkalines if needed). Currently has a Coast HP14 in one vehicle and a 5.11 XBT A6 in the other. The Coast is utter junk; sure when its working its fine but it frequently doesn’t want to work. The 5.11 I REALLY like as a truck light, though. Operations off half the cells if needed, throws great and has an optional low mode.
Looking to replace the Coast HP14, though. I could scoop up another 5.11 but for the price there has to be some better options. They are on close-out for $30 now but you can still get a lot of light for that in some brands. I would like about the same size as its easy to find, hold and use as a vehicle light (smaller and it tends to get “lost” in the glove box). Any other suggestions? That Sofirn SF11 looks good but its still pretty short. I’d like to be in the range of a 2-3 cell Maglite as far as overall size.
How would a 26650 light with 3xAAs in an adapter like this work?
Edit - 3AAs won’t fit into 26650 space, that adapter is misrepresented in it’s title…
Would that 3xAA adapter fit in a 26650 light? The website says the diameter is 27.45mm.
I find that difficult to believe, or there would be an awful lot of complaints from mobile phone owners (of which there are billions).
BS claims. I owned that light at 1 time. Got rid of it. Crappy shadow rings when zoomed in and light beam reached no where near specs.
Good catch! Didn’t read that far, just went with the headline.
And, of course, the 14mm AA diameter is more than half the 26mm diameter, and if 2AAs won’t fit 3 definitely won’t!
So ignore my suggestion 
Heh — and here I was hoping for “Sure it’ll fit! 26650’s are usually closer to 27mm and their flashlights usually have at least a mm or two of slop!” I don’t have any 26650 lights to actually measure the inner diameters of, so I don’t know.
Ah, well.
I’d certainly think it would increase the market for 26650 lights if they fitted and were sold with 3xAA adapters. They have a decent “regular flashlight” hand-feel, and you can give them to the same muggles who don’t mind toy 3xAAA (i.e. 18650 in disguise) lights — except without the exceptionally poor runtime and the lack of decent amperage.
Maybe I’ll go put a post to that effect in the Sofirn suggestion thread…
you might want to look into the convoy x3 its a little bit dated, but was 4xaa/26650 with some spacer o rings
Maybe you need a Nitecore EA81 with an emitter swap.
Theory is theory but proof is proof, immediately after replying i did try and shove 3 AAs into my Cometa’s 26650 tube… no chance! I agree, we definitely need a couple of 3xAA lights that can also take a 26650, let me know what Sofirn say 
I think a 26650 light that could fit 3xAA would be a great idea! The same flexibility that a 14500/AA light affords, but with much more usable capacity when running on Li-ion.
(Also, I can confirm that a Sofirn SP33 only has an inner diameter of about 26.5mm, so that one’s off the table too. At minimum, 3xAA squashed together is about a 30mm diameter, so I think that adapter’s dimensions are a little misleading.)
Can’t do emitter swap. Gonna have to wait for some manufacturer to make what I want.
I haven’t been able to find one anywhere lately…
Wellp, for 4×AA you got the TN4A, TK4A, and SP…something, forgot. Thrunite/Thorfire/Sofirn, respectively, and all essentially the same light.
Dunno why you’d want to use those hateful little AAs, as they’ll take a dump in the light and ruin it, especially with multiple cells in series (2 worse’n 1; 4 worse’n 2).
And output will fall off from the first second they’re powered up.
NiMH is marginally better, won’t leak, but I still wouldn’t want to use 4 in series, as the first “weak link” that drops below 1.2V will almost instantly be reverse-charged and ruined.
So… you pays yer money and you takes yer chances.
I’ve got two Sunwayman D40A CW/NW lights and I like them hoth.
Chris
A pouch lipo is not the same as a cylindrical li-ion cell.
There is no problem using cylindrical lithium cells in high temperatures.
You will be dead before there is any risk of a lithium cell exploding.
NiMH is a lot better than alkaleaks, especially for power output. They’re not as good as lithium-ion, but a 1000+ lumen 4xAA light will easily run on NiMH.
Most good 4xAA lights have low-voltage cut-off, so shouldn’t reverse-charge your cells even if you have a weak one. Besides, I’ve reverse-charged Eneloops, and they’re still perfectly fine with no loss of capacity. Probably lost a few cycles, though, so it’s definitely not good for them.
One thing that 4xAA lights have going for them, is that you can find batteries absolutely everywhere. The alkaleaks certainly aren’t good, but it’s better than nothing if you have no other choice.