Any experience w/ JKK03 and JKK36 3x18650 USB rechargeable XHP70.2 XHP50.2

ControlTheController · 2022-03-06T14:24:20.000Z

I got a JKK03, my first impression is that it is small, smaller what I expect for a 3x 18650 light. The length of it is about the same as a Convoy S2+. I bought the XHP50.2 6500K version as it is the cheapest and I’m gonna swap the emitter anyway. It has 3 modes, triple click (IIRC) to access turbo and quadruple click to access strobe and SOS. One thing that is bothering me is the mode order, being High - Mid - Low which I don’t prefer. The cooling is pretty good thanks to it’s unibody construction. I did not use the light too much before I replaced the XHP50.2 with a Nichia 144A, but the yellow corona is very noticeable even when cycling on a grey road. I guess pairing s large SMO reflector with a XHP50.2 is not a wise decision. The light uses a boost driver and the XHP50.2 is in 6V setup. The heat in high mode is acceptable and it can stay in turbo for quite a while before getting too hot to hold. However I don’t think it has any turbo timer/ temperature regulation so one has to be careful when leaving it on turbo. With the 144A, the beam pattern is also horrible, perfectly showing the egg yolk in the hotspot and a yellowish ring in the corona-spill area. I’ll post some photo of the driver and light if I have time soon.

ControlTheController · 2018-10-13T17:49:29.000Z

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Funner · 2018-10-13T17:57:39.000Z

ControlTheController:

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Yes but through Kaidomains page.

Link: http://kaidomain.com/JKK03-Cree-XHP70_2-LED-3600-Lumens-6-Mode-USB-Rechargeable-LED-Flashlight?search=Jkk

Funner · 2018-10-13T17:59:29.000Z

I liking this light the more I look at it. It should be a great all around light. And with the OP reflector, it should flood great.

ControlTheController · 2018-10-13T18:09:56.000Z

Funner:

ControlTheController:

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Yes but through Kaidomains page.

Link: http://kaidomain.com/JKK03-Cree-XHP70_2-LED-3600-Lumens-6-Mode-USB-Rechargeable-LED-Flashlight?search=Jkk

Ahh, now I regret that I got mine with a SMO reflector…
I put a layer of diffuser film on the lens with the film facing the inside of the light. It made a great difference and now the beam pattern is very nice. However the film is milky white and it kinda defeats the purpose of the R9050 144A… :face_with_monocle:

SKV89 · 2018-10-13T18:30:17.000Z

ControlTheController:

Funner:

ControlTheController:

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Yes but through Kaidomains page.

Link: http://kaidomain.com/JKK03-Cree-XHP70_2-LED-3600-Lumens-6-Mode-USB-Rechargeable-LED-Flashlight?search=Jkk

Ahh, now I regret that I got mine with a SMO reflector…
I put a layer of diffuser film on the lens with the film facing the inside of the light. It made a great difference and now the beam pattern is very nice. However the film is milky white and it kinda defeats the purpose of the R9050 144A… :face_with_monocle:

You can get DC-Fix film. It doesn’t change the color of the beam, just blends everything together. Works very well. You can buy it from member Boaz here. You do lose 7% light output but it’s unnoticeable. It should blend the beam better than an OP reflector.

PBWilson · 2018-10-13T22:32:06.000Z

Those look pretty cool. With a better UI I’d be pretty tempting.

christoph · 2018-12-08T15:15:28.000Z

I just got one with the XHP70.2 at 5000k it is at least as bright with a similar light pattern as my emisar d4ti at 4800k now I need to get a usb-c cable to charge it I also have a JKK13 with the removable head so that it can be just a power bank. nice light I’m glad I got it. It cant be locked out though.if you leav it in low when you turn it off it’s not bad it has memory.
Chris

TexasToasted · 2018-12-08T16:23:34.000Z

“XHP50.2/XHP70.2 Version:
Mode: 6-mode high / middle/ low, Double click within one second turn to Turbo mode (super bright mode), fast click 3 times Strobe / SOS, long press 2 seconds to turn off.”

Is it really 2 full seconds to turn off?

SKV89 · 2018-12-08T17:59:24.000Z

The long press 2 seconds to turn off was the only reason I haven’t bought one of these yet. I wish they would update the UI for single click for on/off.

TexasToasted · 2018-12-08T18:37:17.000Z

I have a few lights with the long press to turn off and I can live with 0.5 second to 1 second, but my original DQG Tiny 26650 has a full 2 seconds and it gets on my nerves.

ControlTheController · 2018-12-08T19:18:12.000Z

I didn’t really count how long it takes to turn my JKK03 off, but the delay is long enough to annoy me, as I can’t instantly turn off the light whenever I want to do so.

christoph · 2018-12-08T20:05:31.000Z

Its about a half second or so. Not a deal breaker for me.
C

ControlTheController · 2018-12-17T16:21:48.000Z

Here is JKK03 with SMO reflector + Nichia 144A

The worse part is the hotspot, where there is an obvious “egg yolk” effect.

Below is the same setup but with a OP reflector.

OP reflector won’t eliminate this issue but the effect is reduced.
(FYI the type of OP they use is rather “mild”)

ControlTheController · 2019-03-17T03:23:44.000Z

It seems that they have updated the charging port. JKK03s are now Type-C.

Edit: Kaidomain’s JKK03 are still Micro-USB ones though.

d_t_a · 2019-07-30T11:00:44.000Z

I’d like to know more about this JKK flashlight with powerbank feature.

Would the JKK03 be similar (slightly stouter) to the Sofirn SP33 / Convoy S11 in size?

And the JKK36 is maybe similar to the Convoy M3 in size or smaller?

What’s the main difference in terms of beam pattern of the JKK03 vs JKK36, assuming the same LED were chosen in both models (eg. both are using XHP50.2 or both are using XHP70.2)?

andychrist · 2020-01-02T00:09:09.000Z

Just ordered the new model JKK36R (4000K) USB type C cable included from Ali.

Says they changed the mode pattern to Low-Medium-High.

Funny but I already have an XHP70.2 4000K in both an upgraded Magicshine style bike light clone and a fairly new KDLITKER BL70S, and wouldn’t describe either as Warm as listed on Ali (KD says NW for 4000K and I agree.) Though for some reason those emitters in my two mismatched lamps don’t seem to share the same exact tint, maybe the binning is slightly different or the larger reflector on the KD makes it seem a little more creamy. In any case both have very good color, can’t imagine the 5000K emitter offering any improvement.

Also have a couple of the JKK03 4000K on order from KD, am hoping to be able to fit 39mm wide angle lenses inside their bezels to smooth out their beams with minimal loss. Would install them with the grooves running horizontally to produce an elongated spot rather than wide ellipses so they’d still be pretty throwy. (Diffusing film I applied to my BL70S does a great job eliminating rings but kinda kills the throw.)

Will be a while before any of these flashlights arrive but will report back then.

Happy New Year everybody!

Jerommel · 2020-01-02T00:22:08.000Z

ControlTheController:

Funner:

ControlTheController:

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Yes but through Kaidomains page.

Link: http://kaidomain.com/JKK03-Cree-XHP70_2-LED-3600-Lumens-6-Mode-USB-Rechargeable-LED-Flashlight?search=Jkk

Ahh, now I regret that I got mine with a SMO reflector…
I put a layer of diffuser film on the lens with the film facing the inside of the light. It made a great difference and now the beam pattern is very nice. However the film is milky white and it kinda defeats the purpose of the R9050 144A… :face_with_monocle:

I’ve found here at the “dollar store” ( Action ) a spray can that can make frosted glass out of plain smooth glass.
Just 1 thin layer does the trick.

Jerommel · 2020-01-02T00:25:33.000Z

ControlTheController:

Here is JKK03 with SMO reflector + Nichia 144A

The worse part is the hotspot, where there is an obvious “egg yolk” effect.

Below is the same setup but with a OP reflector.

OP reflector won’t eliminate this issue but the effect is reduced.
(FYI the type of OP they use is rather “mild”)

The 144A is the most difficult LED i have…
I did find a suitable 30° TIR for it though, but it’s only 30mm diameter (but fits Sofirn SP33)

ControlTheController · 2020-01-02T16:15:52.000Z

Jerommel:

ControlTheController:

Funner:

ControlTheController:

Funner:

I may pick up the JKK03 with the OP reflector. The other JKK lights have a larger head than I like.

Is it possible to get a JKK03 with an OP reflector? I don’t see any reflector options in the AliExpress product page.

Yes but through Kaidomains page.

Link: http://kaidomain.com/JKK03-Cree-XHP70_2-LED-3600-Lumens-6-Mode-USB-Rechargeable-LED-Flashlight?search=Jkk

Ahh, now I regret that I got mine with a SMO reflector…
I put a layer of diffuser film on the lens with the film facing the inside of the light. It made a great difference and now the beam pattern is very nice. However the film is milky white and it kinda defeats the purpose of the R9050 144A… :face_with_monocle:

I’ve found here at the “dollar store” ( Action ) a spray can that can make frosted glass out of plain smooth glass.
Just 1 thin layer does the trick.

That sounds interesting. Unfortunately I can’t access the link, it says that it’s blocked or something.