Cree changed production process for XP-G2 emitters!

So what Hank was shipping in January was good? I ordered mine bare.

My new ones were ordered at 13 February 2016.

Hhmm, guess I could have gotten lucky. Maybe the bare ones were remains from an old batch, or the new batch came in end of Jan, beginning of Feb. Sometimes he says the LED's are from a new batch or not, I've noticed. He's also very helpful when asked. I've asked couple of times for LED's bare that were not listed, and always were able to get them from him.

I should re-check tail amps then with my clamp meter - might be a little higher than 4.25A. I'm using 20 AWG wires and a FET+1 driver with the SIR800DP, springs bypassed with 22 AWG wires.

Okay… Good info on the number of dots. I guess I need to get my microscope out and check the few XP-G2s I have in my kit. I have a number of older emitters, but mine are all likely 1A tint.

2x magnifier is good enough for this.

I realised which of them where old or new , according to the size of the die (with help from li).
It’s pretty obvious if you learn what you are looking for.

I used a cheapo 10X pocket magnifier, along with my 2.00 drug store glasses to examine the dedomed LED, and that did the trick for these 58 year old eyes. I find magnification combined with a good light source really, really helps. My hands are still pretty steady. I work with a guy in hist late 60's and be does some super small incredible prototyping work still, but same thing - having the right tools is huge.

Recieved my second batch from those( Cutter ones) today and dded 5 of them, they all went above 4 amps and one of those hit 4.9 amps….

Mitko, those are the old style you are talking about?

Have more people tried the new style S4 2B? It seems like the main reason for the decreased performance of the new style is a higher Vf, causing less current to flow in a one cell setup. But the new style S4 2B that Richard tested actually had a lower Vf than the old style. Was that one just a fluke, or are there lots of new style emitters around that actually have a lower Vf and might still be good performers? I realize the new style also has a slightly larger die size, but not by very much.

Mitko which emitters did you received and can you confirm they are from good old batch?

It might be an idea to get this info via PM. You don’t want them to sell out before you get a chance to order.

Yes m8, they are, talking about S4 2B…yet as mapache “predicted” those are sold out allready, i presume BLFers drained the stock out :smiley:

P.S

330 kmcds out of Olight m2x running at 4.6amps and a single battery, same with B158: yet it seems that B158 is more throwing when scope checked

If only I could predict the lotto numbers now!

The individual emitters sold out weeks ago. There are still some on stars but I don’t know if they are old or new. I plan on ordering a few to check but need to wait until I get paid in a couple of weeks.

I always claimed that same kcd values of reflector vs aspheric are not same… With aspheric you’ll see further in a night.

I have 340 kcd reflector and visually it does not out throws even mine 250 kcd UF 1503. Both measured on same light meter at same 7m distance.

So is this perception(the way we percept things) or beam spreading at a distance I can’t tell exactly.

I got my 8 good, old and precious XP-G2 S4 2B and messed 2 of them by by stupid recklessness so Smeagol is very angry now

Yeah thats true m8, yet refclector based torches have their atvantages, even if the target moves from the hotspot you still can spot it cause of the ” oreol, a.k.a halo” lighting caused by the reflector- and its very efective in open filed type hunting.

And ofc thet halo lighting “nukes” your scope eye if there are leafs, grass and other reflecting back obsicles…

By its another topic, and its hella long

Cutter still as S4 2C- its also a great emitter, same performance, same amps

I recently bought these S3 2B fom TaoBao. And have one of them changed into my Courui (DD) and found that it is actually brighter than the initial 2016’s S4 2B. However I still not sure whether these are old version.
They were produced in Dec 2014. Anyone know when CREE changed their production with new batches?

With a date of Dec 2014 they will be the old version.

Noted. Thanks :slight_smile:

One macro shot tells more than 1000 of words. Very easy to detect them…

Can you report some kcd values of your Courui with S3 2B? Yes it probably is brighter than new S4 2B but even old R5 2B is brighter than it.

Old and better version of S4 2B is different animal.

I will quote myself:

“Very simple to detect them by dot method.

Old has around 40 visible dots on emitter while New has more than double number of mentioned dots and they are very hard detectable.

Yes, this is the old batch.
From the left to right: XP-G3 S5 2A (May 2016), XP-G2 S4 2B (Mar 2016) and XP-G2 S3 2B (Dec 2014).
(sorry for dirty LED doom surface as they are so small to handle with).