10 lumen brightness continues over 3h mark, I just aborted the test there.
During the 10 lumen period it's possible to switch back to high with a single half click. High is then on for 2-3s and steps down back to 10lm emergency mode. This can be repeated as long as the batteries last.
going to have to buy some eneloops now I guess god damm you. 
:bigsmile:
if my 26650 will fit im going to buy one!
Thanks for the well organised preview. Impressive light. Even on AA.
Yes, that ten lumen low for extended time is a very nice safety feature. I'm becoming very tempted...
the, as usual, nice and informative review.
But you people have to stop doing this to me. I have just donated another $45 to Mr. Hank Wang’s bank balance 
Wow this looks great. These should be the standard mode spacings on all lights.
the thanks! Looks super on AA
That photo is a bit misleading.. The spring mod is only on battery carrier negative spring. Doesn't help 26650 usage. [Frankly, doesn't help lot in AA usage either - rumor says Hank is even going to remove it from further versions]
It should be noted that it really is negative spring. Positive end of the carrier doesn't have a spring, which fools me to try to put the carrier in the wrong way around. Carrier spring towards the tailcap is the rule with this light.
As I mentioned earlier, the lens is very clear. Re-checking it now in a direct sunlight shows signs of some kind of coating.
It's not as purple as I have used to see in AR coated lenses, but it shows fingerprints "better" than uncoated lens.
So I decided to test initial OTF lumens with and without the lens and the results were good: Lens cuts only 1.6% (13lm) and performs like an coated lens should.
I think I need to admit my mistake: The lens has (some kind of) AR coating and it performs well.
Sorry about causing unnecessary hassle. 
No side switch?
(nothing is wrong with this light, just that I might be too picky…)
no, i prefer side switch lights too that would have been icing on the cake
that said, i think i bought one days after it was released
I have a lense just like that the its in the oem d5, no sign on the specs of coating, never noticed for MONTHS it was coated, went to take a picture one day and spotted it, now I don’t know how I missed it.
Getting really eager to get this light now.
Thanks for clarifying the.
Glad to hear it is a good AR coated lens.
This X3 looks like a real winner. Thanks for the review.
Sorry. Won't fit. :(
I used King Kong 4000mAh in my tests and (as unprotected) it worked fine. Now I tried TF 26650 "5000mAh" and that's too long at 68.5mm. Same applies to XTAR 18700.
What about the 18650? Has anyone tried that?
"3*NiMH, 1*26650 or 1*18650 (only works with the length under 67mm"
I didn't think about this when ordering . Might have to sell mine.
just imagining, how does this X3 compared to shadow JM26 either in 26650 or 18650?
the pricing is so near…
If protected batteries won't fit this one than I would say the JM26