$100 Budget MONSTER-Lights w/ 15000+ lumens: Wurkkos TS32-Nichia 519a. Comparison with Chinese POWER-LED Heavyweights: in Haikelite HK05, JKK76, Nightwatch NS59v2 Chaos. (Summary & measurements on P. 1)

Currently on wurkkos.com it comes out to US$99 with batteries and handle, though you’d have to wait for shipping from China. But given amazon’s price is close to 1.5x that even with a discount, it’s probably worth it.

@LOTL & epv, there’s a huge sale for TS32 on Amazon: 20% off by clicking the “coupon” square, and then on checkout add the code T7NAHM8M for another 20% off. AFAIK this should be the lowest price you could get for this light currently, and extra nice because it’s from US Amazon with prime shipping and privilege.

Details of the sale is here - AFAIK the sale ends 12-31: 40% OFF Wurkkos Powerful TS32 Flashlight(LH351D+519A LED) on Amazon US

TS32 US Amazon: https://www.amazon.com/gp/product/B0BJDTPGGZ/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&th=1

Thank you! Grabbed one with both discounts applied.

How much is it on Amazon? It’s $82 from Wurkkos direct.

I just got one on Amazon - with the amazon 20% discount plus the additional 20% from the code (T7NAHM8M) in this thread it’s about the same as on Wurkkos’s site. It was $108 with batteries and handle for me.

@ Zoulas: Add handle (around $3) and batteries (around 13) = 99.99 same as Amazon, and no Amazon “privilege”. I think you would like to have that handle in case (it’s so inexpensive), and the 3 Wurkkos batteries are at reasonable price. Lower current draw than 40T but higher capacity so I kinda like them.

Btw, someone might have noticed all the other budget super-lights I listed in title use Chinese LED’s, and one of them is here the Haikelite HK05. If it is any indication I would reiterate what I mentioned earlier, that when it comes to beam color and Duv, it appears NONE will come close to the wonderful beam of Wurkkos’s 519a, especially at Turbo level.

Some of them do have higher output and throw, but of course none has Nichia, and the Wurkkos again stands out in that the 12 Nichia 519a’s form an incredible 519a floody beam that I think any hobbyist should see once in his life (JK).

Reserved - Diagram
Invasion of the High Output Chinese LED’s
Does anyone know what company is behind these LED’s?

$99.58 for the 519A, Batteries and Handle for me.

First mod already: I removed the handle and put the screw back with a thick rubber washer (from plumbing stuffs) underneath. The screw does NOT go in all the way so some kind of washer is needed. Washer is cone shape and looks even somewhat OEM. The screw protrusion now acts as an anti-roll device so the heavy light doesn’t roll off the table and causes me pain.

The protruded rubber buttons are not my favorite, a little “mushy.” I much prefer for example the flat rubber button of Wurkkos TS30 and Sofirn IF25a.

The handle seems to be on the worst side of the available 3 sides, but I was going to remove it regardless. The way I use it (519a: sub Turbo mostly with occasional Turbo burst) the light doesn’t get hot. Without handle it fits jacket pocket easily.

TS32 is actually not too big compared to Haikelite HK05 in picture below.

Finally got to open my AZ -sourced TS32 today from under the Christmas tree. Charged cells internally. Checked out all 4.19. Light looks good, functions as advertised. Flood is really a Great Wall of light. Very pleased.

Yeah I agreed, what a nice Christmas self gift :slight_smile: . I will always remember that first moment I turned T32 on at full blast. Oh I surely am not in Kansas anymore!

I had observed previously the 519a 4500k’s Duv drops with heat, in 519a more than 219b for example. It appears the same thing is going on here with 519a 5000k. I noted on a post above that Turbo’s beam color is most beautiful and clearly better (less green) than the dimmer setting. I thought it was output related but now I am thinking heat also a factor.

By continuously screen capturing Opple’s Duv (25 times total), I could follow Duv behavior of 519a 5000k in the 1 minute after a Turbo start:
At start of Turbo: –0.0021
As the light heats up (and stepdown starts), Duv becomes more negative rapidly, peaking at –0.0051 at 40 seconds. Output roughly 70% of Turbo.
With stepdowns, light becomes dimmer and temp cools, and Duv now turning towards positive, hitting 0.0000 at 1 min
I ended the test when light becomes very dimm and output very roughly 10% of Turbo, at 1 min 6 second Duv is 0.0002.

Yeah this is what I did on Christmas day. I have empty nest and forgiving wife. But really one of the most fun flashlight things I’ve done. IMHO the finding here, pending further amateur home testing when I have time, is that TS32 likes heat and it likes higher output, and the most beautiful beam (most negative Duv) is 40 seconds after a Turbo start. Time yourself and enjoy that beam at 40 seconds if you’re interested. :partying_face: :+1:

Yes, I am not real fond of the handle either. It is just too small. I have actually dropped the light trying to use it with gloves. Fortunately it was on to a padded carpet so no dmage done.
I know that the handle design is dictated by the size of the light and probably the requirement that the light will tail stand with the handle mounted. I also agree that they picked the worst position for the handle.

OTH, I do appreciate having something when the light is run on turbo. It definitely gets hot fast.
I may do something like you did Cannga. Just remove it. I too very rarely run any of my lights on Turbo. So I could get along without the handle.

Other than that I really like the light. I have been using it nightly for dog walks. But, after the novelty wears off, I am sure I will go back to a smaller light.
I think the real long term usefulness of the TS32 might be with a diffuser on low settings for room lighting. But it is an impressive and fun toy!

The tint shift with heat is normal for almost all emitters. Current as well, but of course they are closely related and the electrical inefficiencies compound that, too. If you look at the data sheets for various brands/models you can get an idea of what to expect (from bare emitters). Hopefully this shows up legibly but here’s the page for the R9080 5700K. They’ve got one for forward current and one for the junction temperature (where the base of the emitter meets the mcpcb, not the measured temp in the head or driver). For the 519A the effects on the lower temp models are somewhat drastically different than shown here for the 5700K (they only provide 3000 and 5700 on this one). Not all emitters have such a huge difference between temps or sometimes just in the shift itself.

@Correllux that’s a great and helpful find - thanks. The magnitude and direction of Duv change seems to correlate well to what I see so far. At least, it seems like my amateur home test is in the ball park.
If I understand the diagram correctly, and I don’t know exact current nor temp in my light, plus need to check calculation again (lol many if’s) but from approximating x,y coordinates of the 2 graphs:

Forward current and Duv
100 mA: Duv 0.0013 CCT 5431 (x=.3340, y=3450)
2400 mA: Duv 0.0060 0.0019 CCT 5743 (x=.3270, y=.3400)
Duv becomes more negative by 47 points as forward current increases (vs my observed 48 points swing that I noted here)
EDIT: I made a mistake calculated above part. Duv actually stays about the same.

Temp and Duv
25° C Duv 0.0020 CCT 5650 (x=.3290,y=.3420)
85° C Duv –0.0022 CCT 5706 (x=.3280, y=.3330)
Duv becomes more negative by 42 points as heat increases (vs my observed 30 points swing that I noted here )

Yep. And this is just helpful so that we know general behavior - and that some emitters may look drastically different in different modes vs. others (like the way the SST20 tends to shift a whole lot for most bins and the standard CRI versions). It’s not like we’re needing to be exact to engineer a circuit or measure really accurately, so with most emitters the data sheets almost tell us everything we need to know, save for how much overcurrent they can handle and where they start to get angry.

Remember those X/Y coordinates are all relative to the BBL, too, so 20 points in one temp range won’t be the same difference as 20 points on a different temp emitter. And too (sorry) that the Opple is just never going to give all the data from its sensor (it can’t), and we don’t really know what the software is fudging with the data it does receive, just some of the quirks we see in the results (such as the oddball warm temp favoritism in CRI, etc….stuff outside the expected range of error/accuracy for the components and that is unaffected by how carefully we try to standardize the conditions).

The lights will never ever reach the junction temperature of the emitter (thank goodness). But that factor is why back in the day some smart people started to design and get manufactured the nice DTP boards we use today, which is great since many emitters also have lower thermal resistance now as they evolved over time. Switching to hosts with integrated shelves for the board to sit on also helped a ton compared to pills, so we can start to dissipate heat a lot better than we used to, and sometimes enjoy less tint shift while the light is in use unless we’re really overdriving them and trying to maintain that output/heat saturation.

All of those if’s, and ya change one and it affects one or three others. Complex little alphabet soup. :slight_smile: And that’s just bare emitters! lol The science and physics of Light is just fascinating really…way more to it than I would have ever guessed…and human eyes to boot.

Now check out the same info for the R9080 3000K emitter. Makes a hard turn for Albuquerque compared to the 5700K.

They never specify bins for these, but binning does also often matter a lot. Often people complain about something and aren’t aware of binning or that they may have gotten a less-prime bin (LH351D seems to be a popular opinion victim of that, maybe). For these 519A emitters the bins may not make as much different but they do have several bins per temperature as well as I think 8 chromacity groups within that binning. What we get and see just depends on who bought what. :slight_smile:

I did my own approximation. I cut the graph where x and y axis has 4 grids (0.01 times four). I scaled the 4x4 grid to 400x400 pixels (notice x axis and y axis are scaled differently), so that each pixel would equal to 0.0001.
100mA is located 235, 150 from the top left. So, I get 0.31+0.0235=0.3335 for X, 0.36-0.0150=0.3450 for Y
2400mA is located 163, 202. 0.31+0.0163=0.3263 for X, 0.36-0.0202=0.3398 for Y

Plugging in the numbers in www.waveformlighting.com for duv and CCT, I get:
100mA, CIE x: 0.3335, CIE y: 0.3450, DUV: 0.0016, CCT: 5453
2400mA, CIE x: 0.3263 , CIE y: 0.3398 , DUV: 0.0022, CCT: 5776

@limsup good catch - thanks. Did you have a chance to check what I got for temp?
If we assume 5000k behaves similar to 5700k, then this means the temp factor alone would be an explanation for why TS32 looks so green with lower output. At least, this was my observation for the 519a 4500k (I sat and watched y drops with time).

The way that temp curve from Correllux drops straight down the y axis is impressive/interesting and a sure indication of temp causing Duv drops, I think.

I’ve read about LED being green at lower output and less so at higher output from other reviewers. TS32 is probably the most obvious change that I’ve seen, green at lower output and beautiful at Turbo.

I just checked the first one. The reason I checked it was because the numbers did not look right. You noted higher CCT for lower current, which I thought was odd. After checking the numbers myself, it was apparent that you mistakenly flipped the numbers around.

I observe that too that in lower output the light appears more green and looks nicer at higher output. I notice it on my TS25 (Nichia 519A 5000K) and notice it more on SP10 (Samsung LH351D 5000K). However, my measurements are somewhat inconsistent with what I see. I measured DUV for 7 stepped output on my TS25 and they clearly have upward trend along the output levels. That is, higher the output higher the DUV. DUV for 3/7 (about 10lm) output was –0.0017 where as 0.0010 for 7/7 output (about 900lm). Also, the shifts in CCT along the output levels were quite large. Lowest was 4490 and highest was 4879 (max difference 389). I think DUV comparisons do not give consistent results with what I see when CCT changes a lot.

At first, I thought higher DUV for higher output applies to all 519A leds, but I was wrong. I recently reflowed 519A on my TINI2 with the leds taken from my broken TS25. I checked DUV across different output levels (15lm to 500lm), and they pretty much stayed around –0.0038. The shifts in CCT across output were WAY smaller compared to TS25 (4824 to 4984, max difference 160). So, I think the way leds are driven (and possibly different optics) matters a lot. It may also have to do with the number of leds. There are 2 leds on TINI2 and 4 on TS25.

I will have to investigate it more. What I can say for certain so far is that CCT tend to go higher as output increases.