Artie, I’m glad to see you finally pulled the plug and getting this light. I look forward to you taking it apart and flashing some anduril on it.
Great……it’s just for fun and “special feeling”. I hope you are not a sole purveyor of tint or CRI / R9070 or those things, coz it wouldn’t be nice / natural looking. But if you want something special + fun, this is gonna be it, just because like i mentioned above there are very few lights that are 3000K and are floody throwers, or are gonna be f*ing costly. There are, of course as you’d know it, tons of lights in the 1000 to 2000+ lumens range at 3000K. I like high CRI lights in a way but i don’t chase this route endlessly as it never gels with high output.
I measured over 20k lumens output, in fact raw numbers on the light meter would be like 2200 lux for the 3000K and 2500 lux for the 6500k version. This is a very small gap between 3000K vs 6500K, usually the difference / efficiency hit is much bigger, and it’s likely that the LEDs are all driven the same. So definitely the tint/CRI/look won’t be like your Philips or even Opple LED bulbs @ 3000K. This is pretty yellow, but no green stuff at any of the modes. It is also very workable and mimics incandescent at output levels 1 and 2 with a ceiling bounce, so it’s not without its practical uses.
ps. I measured this to be 130-140k cd range. Not a true thrower kinda territory, but it is not shabby at all. Just only like 3 years ago I and quite a few BLFers were excited with the Sofirn Q8 at 90-100k cd, even though it was just 5000 lumens.
Hello. Did someone mention low CRI?
Heh……well if one cannot or does not have the time to change/reflow 7 emitters and design/mod their own drivers, one can only look at the Manker MK38 @ 3000K 90 CRI (70.3 HI) from the VN fella, i think Vinh something. Very obvious that his market is not gonna be here in BLF….
Can’t even guess how much that one’s going to cost……
Of course there would be other +ve with that kind of a light as well, like better performance in various areas, other than the CRI solely
edit - oh….the Acebeam X50 High CRI as well, just that it is not 3000K…but it’d still do for some.
All options are not cheap. Best not to chase this route esp if can’t DIY.
” Some chips”:Jkk76 - Album on Imgur
I took apart the battery tail screws and found these mosfet chips but I think some desoldering is involved in finding the driver on the head.
Sorry if this picture don’t come through. I’m still somewhat new to the forums formating
Really? Are the ultra budget priced, high powered flashlight threads now getting spammed for CRI too? Did you hit the new Nightwatch NS59v1 thread too for not having high CRI? Or is it just because this one is 3000k and people shouldn't be able to get excited for Warm White unless it's also ultra super high R9 99CRI+? I'll contain my excitement next time.
and to further your point- I could easily mod the mk38 with 90CRI 70.3 HI LEDS, would be no problem have it done in under an hour- if I was able to spend $350 on the mk38 from manker's site and ANOTHER 7 x $13.80 = $96+ For (7) LEDs from Kaidoman.com or mouser. So... $446 for a mk38 so I can have HI CRI (and yes a boost driver i know, and it's better made) or $92 for 3000k , 25,000+ lumens without hi Cri. I think at >25,000lumens I'll be able to distinguish a stick from a snake and save myself $300+
also, I've owned the mk38, it's awesome. But it doesn't make the jkk not awesome either.
8 x $13.8 
So just to put it into perspective, the jkk76 with the sfn55.2 can it be moded to 7x xhp70.3 for that hi-cri floody throw? Both of these emitters are 7070 but the xhp70.3 are 6v and the sfns are 3v.
Stumble upon this JKK76 today on KD, got interested in it and then discovered this discussion thread. Thanks for the sharing 2100, apparently it is a winner especially at this price. I am kinda concerned about the heat issue here tho because as I read one of the reviews of Nightwatch NS59v1 which runs 9*SFQ55 emitters at the end of the reviewer’s test one of the emitters got some sort of burn mark on it. Maybe it’s true as you and other BLFers mentioned that while these Chinese LEDs offer great value in the lumens department, they are relatively inefficient as compared with CREE LEDs, so at high current as this there could be reliability issue. But if it’s as what you tested, that Jinheng has somehow limited the current draw in its driver then maybe I could give it a shot.
Apart from that, 150kcd should translate itself into 775m of ANSI beam distance, not sure why they mentioned 450m on their page tho. Anyway if you measure 120~130kcd in your case then it is around 700m in ANSI which is still pretty impressive, not that you can actually see things at 700m in practicality given such an enormous amount of lumens but still, it is mind boggling in perspective. 26k lumens with 700m of beam distance at such a price, it’s really not bad of a deal afterall.
Edit: I still have my two units of BTU Shocker with me, one modded by myself with dedomed XM-L2 + DRY driver back then and another one still in stock form. They are still rocking!
This light still tempts me. I just can’t get into the super bright but not too efficient SFN55.2 LED’s.
It’s super tempting so I just went with the sft40s instead. It’s a mk38 on 1/3 the budget, you get more throw at the cost of a half the lumens but it’s only precieved brightness.
From 1Lumens Nightwatch NS73v1 review I calculated the output to be 4131 OTF lumens for 13,7A. Divide those amps by two and we are near the 6V XHP70.2 territory. Not too inefficient in my opinion.
The Chinese Leds are actually quite efficient at low currents. However, they can take ridiculously high currents and therefore become inefficient at those levels. You can just choose to not drive them so hard. Other Leds such as Nichia Leds will just blow at higher currents.
Hi all
I just got the NS73V2 and I am using a Samsung 30t but would be the difference in terms of output and max lumens if I used the Lishen 21700hp battery?
I am trying to get it from Neal but I have to buy another light first which I don’t want to!
What is the recommended battery for this light?
Thanks
Samsung 30t will give you the max lumens.
Cool thanks for letting me know
I don't know if it was discussed further, but I finally got an Opple after receiving this light. The JKK76 with 3000k option is in fact 95CRI.
i already sold my light, just bc I'm obnoxiously sporadic in selling things, but the day I packaged it up I realized I never tested it. And it was in fact Hi CRI.
that would've probably stopped me from selling it had I tested it before I was paid for the sale lol.
Anyway, the 3000k JKK76 is a MARVELOUS light for under $100.