Review: Yezl Z1X XM-L

True, but it is a very, very nice light - just not one to mod with a high-power LED.

no matter about weight, i have stable trouser pockets.....my interest is more the size.

Don, as about UltraFire C303, you did its review. There probably to put xm-l 16mm
And driver KD 8* AMC7135 Circuit Board?

That would be better - it would lose more heat. But I like my one the way it is...

It would be a pretty easy light to mod.

Wow that’s weird Mine has the longer threads like the bryinte on the right … It is 6 full turns before it drops off the threads … The head side does look a little bit shorter threads and went 5 turns before it fell off the threads . Wonder if your tube is just flipped around?? …I do like my bezel ground down smooth it looks and feels much better …My biggest complaint with this light (xp-g version )Is the body,specificly the center tube The flat spots on the body makes it slicker for no reason ,just so they have a place to advertise .What I want is just all knurling . This is the same reason I’m afraid to buy the D-11 Nitecore …Silly flatspots

Send me your bezels ..

Boazs' Yezl bezel grinding services

lol...thank you Dr. Seuss!

No, it isn’t flipped, it is a different body. Even the lanyard holes are ultra thin on Yezl. I suspect different batches or even built by different factories with the “same”(!) specs…

I received my AW 2900mAh protected li-ion and 1600mAh IMR cells yesterday. With a full charge, the protected li-ion puts out the rated 2.5A but the IMR does a full 3.5A on high. I noticed that there is almost no difference in brightness from 2.5 to 3.5 amps. After doing some reading of Crees product sheets, I see that the XM-L is rated at a maximum current of 3A. It doesn't say what happens when you go beyond that.

One thing I did notice, the head of the light would get absurdly hot in seconds but with the protected cell at the right current, it was a bearable amount of heat.

Am I turning my light into a heater with the IMR cell with no increase in light output?

Yep. You practically have to solder the XML directly to a giant block of copper and cool it with a fan to get good results at 3+ amps.

Got mine also today.

After a few minutes on high, it gets very hot.

Is this still safe for the battery, I don't want it to explode in my hands.

How many XML lights do you own?

Unless you have unusually heatproof hands it will get too hot to hold before the cell overheats. But when it gets too hot to hold, I'd take the cell out and let it cool before using it again.

I've got a TD15X, one of the hardest driven 1x18650/2CR123 lights/2x18650, and 2 more eventually making their way to me,but I can read graphs and interpret data.

nice light, 105 dollars !!

Yep, although I sorta think I might of gone with the TK35 for the better form factor in 2x18650. However, I could never use the throw of it-the TD15X pretty much throws way to far already, though I love the massive hotspot outdoors, and I probably will run it on 1x18650 when I'm camping.

When I'm out in the wilds I tend to find I use the low power / low output lights a lot more. But the throwers when you have a kilometre or so line of sight are a lot of fun. If I had to carry them on my back rather than in my car, I'd not bring a thrower at all - it'd be one of the pure flood headlamps I own. If the car is carrying them I'd bring every light I own. But there are no large predators here - the last wolf was killed in the 16th century. YMMV.....

[quote=srfreddy]

Yep. You practically have to solder the XML directly to a giant block of copper and cool it with a fan to get good results at 3+ amps.

[/quote]

I mentioned this before in the MadMatch build thread, but it bears repeating. During testing I observed extremely minor gains past @3-3.2amps. Pre-build test had 7 XM-L's mounted to a 10 pound block of pure aluminum. Regulated bench power supply was used, along with a Fluke 724 w/ RTD to track temps. Throughout the tests, emitter base temp never rose more than a degree. Any gains available at 4+amps should be magnified by the use of 7 emitters, and to the human eye there was only the slightest increase. To me, certainly not in any way enough to justify the extra power expenditure. I did not use a luxmeter to do a ceiling bounce, just the naked eye.

Lux figures may show an exact quantitive increase, but I'm not in the habit of illuminating the night with numbers.

What were they mounted on?

Wet ground just eats light up though, and when you're running, it takes a TON of output to not trip over something on blackish ground.

Phoew it feels good to be back at this site!

(haven't been posting for quite a while, since my wallet didn't allow me getting any ore crazy then i already was! :p )

but now the bug has bit again and HARD!

Ordered myself a grey L2P, a black L2P, a L2I, some bezels, some coated lenses, some manafont ultrafire drop ins and this yezl today...

DAMN YOU REVIEWERS!! :d

No seriously now, thank you very much for this review Match i've been reading a lot of your posts lately and every single one of them is very interesting to follow!!
First i doubted at this light but after seeing it in action with thommy (who happens to be the father of my girlfriend) i just had to buy it!

This light really is a portable powerhouse!

I would also like to add a thanks to Ric Thomas (salesman of cnqualitygoods who you can add in messenger) for his help and for giving me the 10%CPF discount rate...

(God is my witness that i only have that account for getting the 10% discount )

So thanks again Match and please keep us entertained with your interesting posts!!

Welcome Back, KDLST! Thanks for the nice comments, and I'm happy to be of service! Since writing this post, I've rectified the minor gripes I had with this light and it's quickly becoming a favorite. The one thing I wish it had was a deep pocket clip. Guess that just gives me incentive to make/mod one for it.

Btw, Ric is now giving that same 10% discount to members here as well.