KC1 keychain light is available now

> Does anyone know if the 219B will also ship with the floody optic?

dont know, suggest you ask the seller

fwiw, optics are easy to swap and inexpensive… suggest you ask the seller for a couple spare “narrow clear” optics to experiment with…

219Bs look fine in clear optics IMO. They are just great in everything.

I have a D4v2 that I swapped some sw40 in and they look great with the clear optic.

> suggest you ask the seller for a couple spare “narrow clear” optics to experiment with…

Good suggestion, thanks!

>219Bs look fine in clear optics IMO. They are just great in everything.
>I have a D4v2 that I swapped some sw40 in and they look great with the clear optic.

Thanks, I had read where E21As almost require a floody optic and assumed the 219Bs would be similar. Good to know the clear optics are fine.

If I am ordering a d4 with 219b, what are best suggestions for driver to ask Hank to put in it? Is 7.5 amp driver with fet too much? Can it have fet at all? Should it have 5 amp driver not fet?

Sorry, I know people have answered questions like this all day, but earlier I was curious about the dt8, now I'm thinking d4. Thanks.

just finished the sw45k swap in the middle:

In my humble opinion… the sw-45k is the best led ever. I have made a couple of sw-35/sw-45k quads and they really are nice, but a little warm for me. I lucked into about 25 xp-l hi, I think they were 5D2, anyway below the bbl. They display a slight roseyness and really high output. For me, after all of my builds… low cri I like about 3750k and high cri builds I like 4000 to 4500k.

I came out of lurking mode to ask if anyone knows how limited this is? I already have four D4V2s from Hank: Black XPL 6500K, Grey XPL 5000K. Cyan e21A 4500K, and a Sand e21A in 3500K. I’m not normally a fan of rosy tints and definitely don’t want to get anything too redundant but my FOMO alarm is going crazy. I don’t even know what light I’d want this in but am leaning towards the 219b in 4500K in something.

Please note that Hank indicated he is shipping it with 9 Amp driver. No FET is included by default:

Although the result of 2.25 Amps per emitter exceeds Nichia’s specified maximum current for the 219B, The collective experience of this forum has demonstrated that lights with good thermal performance give the 219B no discernible trouble at this current.

Having a FET could be slightly risky, and I would prefer not to do so for 4 x 219B, but if you read the last page or two of discussion, you will see others are fairly comfortable with it.

K9.3 using 219B SW45K…with or without FET? What’s your opinion? 9x 2.25A max = 20.25A. Using a Samsung 50E or 50G should be fine, shouldn’t it?

Should be fine, BTW I made this a while ago to estimate direct drive current : Graphing Calculator - GeoGebra

Instructions : LED direct drive current calculator

thank you so much, I appreciate this. I felt like the answer was somewhere in the last page or two but I got a little lost. This is a big help, and I read that what Hank said earlier and completely forgot about it, thanks.

Here is the thing about these LED’s. If I just ask you if you want a pink/rosy light, chances are you wouldn’t have any particular reason to say yes. But this is one of those things where you don’t know you want/need something simply because you don’t know it exists or how it benefits you.

The thing about this tint is that it’s like a final edit on pictures or a movie. When you see a magazine photo, it looks perfect. You don’t know how it got to look like that, you just know it looks great. Well this is the case with the Nichia 219B in SW45K.

If you were to bounce the rosy 219B light off a white wall and compare it to some of your other favorites, you still may not see “the big deal”. White walls ins’t where colors are gonna shine obviously. It’s in the colorful area’s of your life where you’ll best enjoy this light. Don’t compare it to the lights on a white wall, compare it in a garden, or on a beautiful painting. That’s when you’ll see how amazing the “rosy” tint is. Reds are a super important spectrum of color. Even just something simple like human skin becomes vibrant with 219b, then instantly dull with other LED’s. It’s something you just end up adoring after experiencing it fully like I told you, in real life. It’s in real-life conditions that other LED’s suffer or fare way worse. Others just don’t cut it when you compare them this way. In a nutshell, Nichia 219B light is like the perfect color edit to real life. Thats not something you can just claim about any LED. And keep in mind, it’s not just any ol’ rosy tint either. It’s ultra high, right side of the BBL High CRI rosy tint. Nichia 219B’s are like if LED’s were introduced to a brand new color and all of a sudden everyone wondered how the hell we ever got by without it.

So yeah, maybe give the LED a shot. Nothing you have now compares to it, so your FOMO would ultimately be appropriate. There are few that saw they don’t like the “rosy”. OK, I don’t know how much of a chance they gave it so I can say for sure why that is. All I know is if you like your movies and images to have proper editing and LITERALLY proper lighting (that makes colors pop), you may end up liking that effect on all life around you too, just saying.

Best of luck and Happy Flashlight hunting

I’m thinking about my first hank light now with these sw45k (well I guess I briefly has a D4S that I gifted)…

Anyway, I feel guilty, but my top choice is a D18 all sw45k contemplating a 1/3 mix of sw35 since I know the near 5000K of the sw45k is a bit cool for my taste, and my favorite tint ever has been 3500+4500 e21a.

The D18 has always been on my wishlist but low current per emitter has kept me away from sst20 variants.

K9.3 with sw45 main and 2000k e21a secondary is an intriguing idea as well.

A simple KR4 would round out my list of thoughts. Though ideally in the ArtieT Special® with a Ti/black Al combo.

What do y’all think

WOW, that is by a mile the best setup I have heard suggested for the K9.3. That would be absolute finesse.

im digging that k9.3 setup too, although I don't know about the e21a, I think the 2000k would be a really nice contrast!

if you do go with a kr4, let me know I'll ship you one of those Ti tubes for the cost of shipping. I have 2 extra and only use one of them on the black one kr4.


im still debating my selection of light to accompany this mystical led. I think I'm back at d4, sand, warm white switch. But the dt8 keeps calling me.... and the gray kr4 does too.. man.. this is tough.

dude, you just convinced me i need this led. At the same time you scared me, as I have faced this turning point on my collecting before- where I get that new LED that has me selling half my collection because I realize I need all my Favorite lights to have this led in it. Although I feel like this emitter is a little to rare to do this with. So that's good lol.

Well I can tell you that at least this LED will be totally worth it. I have not regretted going team rosy for a second.

I’ve never had nichia led’s before - might stick some of these in a D4SV2, anybody done that yet?

Yeah. Hank probably can’t do e21a secondaries.

PM incoming Artie.