Wurkkos H25LR vs. Sofirn H25LR

LED Flashlights – General Info 18650 Flashlights
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I’m trying to establish,
(without ripping the guts of the flashlight out)
which white emitters are being used in each one of them.

Wurkkos:
According to the their website, LH351D 5000K LED 90 CRI

Sofirn:
It used to be the same. Samsung LH351D
Now pictures on their website have been adjusted and show “White 5000K LED”.
And the description indicates they using now TN-3535.

I’ve made couple :sweat_smile: of pictures of both.
https://imgur.com/a/S5KjCVR
(skip to ~20th )

Is it Samsung LH351D or already LatticePower TN-3535 in Sofirn ?

24th picture could be the key.

image
image1822×1822 231 KB

White die light up differently under the UV light exposure.

Would someone be able to help determine based on the above?

Could it be different batch of LH351D in Sofrin flashlight?

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2

Both are made in the same basement (77outdoor?) which also makes boruit and the same(maybe with fake XPE instead) light sold on AliExpress for about 5$.

Sofirn and Wurkkos just have a better battery, “Lishen” is I’m correct.

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3

Shenzhen Jinba Technology Co., Ltd. is what you’re referring as a “basement”.
And yes, to the best of my knowledge, they are OEM and ODM for Sofirn and Wurkkos brands, along some others…
But this information does not bring me any closer to identification of the emitters in those two headlamps.
@MineHack7488 I’m after LEDs not batteries.

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4

Since you’re after LEDs, it would be helpful to prioritize a closeup of the LEDs in the album, since it takes a while to scroll from all the popup ads.

Given the existing info, one of them is the TN and one of them is LH351D. Count the number of chopped-off corners on the LED: 1 for LH351D, 2 for TN.

Also, the LH351D 5000K lights up yellow-green under UV, which is highly unusual for a high CRI emitter.

5

This makes sense. The build quality is obviously subpar compared to typical Sofirn/Wurkkos: not waterproof at all, thin aluminum and thin anodizing, crap threads and knurling.

I was tempted to grab one a few days ago, but held off because the photos of latest version show the lack of a retaining ring at the driver/button end. This means I would probably be unable to mod/fix it if the driver breaks.

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Apologies, for making you scroll though all the pictures.
Gallery was created for comparison of the headlamps. Post is for emitter determination.

That’s very interesting…
I’ve grabbed UV flashlight again and couple of others flashlight, that suppose to have LH351D LED emitter…

  • HD20 - 1* LH351D 5000K 90CRI, 1*Cree XP-L HD 5000K 70CRI
  • SP10v3 - 1* LH351D - 5000K - 90 CRI
  • HS10 - LH351D 90CRI ( I believe - 4000K )
    and again
  • Wurkkos H25LR on the Left - officially LH351D 5000K LED 90 CRI
  • Sofirn H25LR on the Right - suspected LatticePower TN-3535 5000K
    Those are the results:
    image
    image1822×1822 204 KB

    https://i.imgur.com/ofesE7l.png

I’ve also grabbed couple of TN-3535 flashlights:

  • HS22 - 1* SFT-25R 6000-6500K, 2* TN-3535 6000-6500K 70CRI, 2* TN-3535 2700K
  • HD10 - 3* CSP2323 (3535) 90 CRI - 4000K
  • HD10 - 3* CSP2323 (3535) 90 CRI - 5000K
    and again
  • Wurkkos H25LR on the Left - officially LH351D 5000K LED 90 CRI
  • Sofirn H25LR on the Right - suspected LatticePower TN-3535 5000K
    this is what I get:
    image
    image1920×1440 140 KB

https://i.imgur.com/9wqjO4B.png

The conclusions are ambiguous…
:man_shrugging:

1 Thank
7

Nice beamshots! They seem to suggest that the official emitter spec is wrong–the yellow-green emitters should always be some 70CRI emitter or a 5000K LH351D.

It’s not inconceivable that the manufacturer mixed up the batches, given how visually similar the TN3535 and LH351D are.