KD (kaidomain): Deals and new products thread

Just noticed that Kaidomain has some new XPL HI Stars.

Cree XP-L HI U4 7A2 3000K-3500K LED Emitters with 20mm x 1.6mm Copper Base

http://www.kaidomain.com/product/details.S024424

Cree XP-L HI U4 7A2 3000K-3500K LED Emitters with 16mm x 1mm Copper Base

http://www.kaidomain.com/product/details.S024423

Could you tell what the point of a u4 bin is? Surely that’s a step back from the xml2.

Marc.

> what the point of a u4 bin is?

That wouldn’t be the main target of the production run.

Binning takes the output of the run and sorts them by color and efficiency.

The odd bins collect the emitters that came out a bit off the target; they get sold cheap by discounters to people willing to buy small lots or single items.

https://www.google.com/search?q=led+binning

But the u4 bin is not as bright as an xml2 u2?

Marc.

U4 is brighter than U2… but they are not as bright as the V-bins.

I’m seeing 869 lumens for the XPL U4 VS 1119 lumens for the XML2 U2.

I don’t see the point in the XPL at this bin.

Please tell me if I am missing something as I have no experience with the XPL.

Marc

Hmm… seems that I was wrong. I assumed, that the XPL and XML2 bins would be equal, since the die size is the same. They are not.
at 3A, XPL U4 should give 869-920 lumens, and XML2 U2 1119-1193.
XM-L2 U2 is comparable to XP-L V4 or V5 in brightness.

But you aren’t going to find a 7A tint XP-L HI in a “V” bin anytime soon.

The warmer tints typically produce less lumens, and the HI produces less lumens.

U4 isn’t a bad bin all things considered.

Compare the 7A tints: XP-L HI to XM-L2 - that's more equivalent. I think the XM-L2 7A's were like T2 or T3 - way lower than U2's. There are 7B3's now though in a T4 bin.

They’ve just added the Cree XP-L HI V3 1C 6500K LED Emitter to their list for $5.79

http://www.kaidomain.com/product/details.S024438

Also listed is a clearance sale of older SSC torches for $10. For some it may be a good value host for modding.

http://www.kaidomain.com/category.128

Do you know a way to filter that site for things in a category that are on sale?

Hi,

Thanks! I picked up a couple of the $10 lights :)…

We are doing some clearance for our warehouse.

Those SSC LED flashlights are great for using or modding.

See which is interested to you.

Thanks :slight_smile:

Sorry I’ve not worked it out. I tend to look through many pages to find interesting products as the search is limited. Fortunately some sales live the SSC are listed on the main page.

New UltraFire UF-T80 Cree XHP50 Flashlight
(http://www.kaidomain.com/product/details.S024453)

- Stepless Adjusted (1–100) and Strobe mode

  • USB Rechargeable

Only $47.84

This one’s interesting. The cells are 3P, so a boost driver must have been used.

2500 lumens seems like a reasonably conservative turbo rating, the XHP50’s certainly capable of higher. Dunno about the driver.

i asked “someone” if he can get it :wink:

The KD HAIII BUCKLE V6 in red that I bought from KD was a real treat. A great little light for just over £3.00. I think I have an urge to get another one probably blue this time.

I mentioned the boost driver becasue the forward voltage of the emitter is far above the input voltage and the cells are in parallel. By comparison, this is very unusual for nearly all cheap flashlights, which are either buck or linear regulated.
Cree shows 1606 lumens at 2 amps for a J bin XHP50. With reflector losses, etc… that would be knocked down to 1285 lumens, which is probably far more likely with the grossly exaggerated chinese lumens we have all come to expect.