[M4D deal] Nightwatch NI40 with Luminus SBT90 Gen2 interest list OPEN

Looks like I may have won the tint lottery on this one. Ive always thought my cat v6 had a very pure white tint, until I compared to the NI40.

I’ll compare it to some of my other neutral white lights tomorrow. Maybe I’ll post some side by side beam shotsif I can figure out how to get my pics to show up.

Just got my NI40 SBT90.2 version

With a fully charged Vapcell 5500mah 26650 (same as Shockli), I measured the following (lumens taken at 2sec)

Lowest Mode:
Output: 50 LM
CCT: 5071K
DUV: 0.0175
Ra (CRI): 67.8

2nd Lowest Mode:
Output: 547 LM
CCT: 5332K
DUV: 0.0127
Ra (CRI): 67.6

3rd Lowest Mode:
Output: 1027 LM
CCT: 5530K
DUV: 0.0095
Ra (CRI): 67.8

Highest Mode:
Output: 1828 LM
CCT: 5747K
DUV: 0.0065
Ra (CRI): 67.8

Turbo (double half click):
Output: 3707 LM
CCT: 6127K
DUV: 0.0016
Ra (CRI): 68.5
R9: –25.9
R12: 40.7
Rf: 64
Rg: 96

With a Golisi 26650, I measured 4,241 lumens at 2sec.

Despite the high duv, it doesn’t look all that green except the lowest mode. The brightest two modes look pretty pure white. The hotspot is very big and round.

Mine is out for delivery. I do not have the equipment like some of you. You guys do a good job with that.

What I can do is I can provide you with some pretty good beam shots with Zero Light Pollution.That will have to wait a few days. Snow for next 24/36 hours.

I already know it will eat the battery on turbo. My MT35 XHP50.2 is about 4000Lumens. After 10 minutes of combined turbo the voltage was 3.58V. That measurement was taken about 7 seconds after load removed. Guess it was more like 3.3/3.4V immediately after turn off. That was with a Golisi 26650 4300mAh 35A battery.

EDIT: So there is no confusion I forgot to add that mine is the SBT90.2 Version.

Just got it. Switch works fine. When light is ON-Double half-press from ANY mode gets turbo.Mode memory was sporadic. Solidly built light, a little top heavy which is fine for me.I am guessing, more mass/more heat sinking? That is good.

This is a visual observation-It “Appears” to step down around 2 minutes with an indoor temperature of 64F/18C. Tail stand with no fan.When 3 minutes hits loss of output it is very visible with the eye.Aborted first test trying to make 5 minute increments.

Starting voltage for Aspire 26650 4300mAh was 4.19V.

After 10 minutes combined turbo [2 ON/2 OFF]the Voltage with An Aspire 26650 4300mAh is 3.62v. Measurement was 8 seconds after load was removed.Probably 0.10v to 0.30v lower at exact moment load was removed?

Basically eats it on Turbo at the same rate as my MT35 XHP50.2.[3.58v after 10 minutes of combined turbo]. Different LED and the NI40 has about 500 to 1000 more lumens

Comparison with FT03

Double half press turns on turbo from OFF also on yours?
Thanks

NO. The light must be ON to activate any mode. This kind of switch does Nothing until it is ON.There is No “momentary”.

Thank you

You are welcome. :beer:

I like the light. Great LED. I still may do a “Catch and release” unless I can find someone to make changes. My Cousin Otto lives in Germany, that is to far!

Two wishes.

  1. It had Narsil so I could disable the step down, 50C[I knew this] is way to low of a temp. setting .

2. The battery world would catch up to all these awesome LED’S we have. 8 to 10 minutes of Max output is not enough time!

These pictures are not that good. Did not hold phone steady enough and misty conditions. Tomorrow night Will be better clear and 15F. I will compare to MT35 XHP50.2 4000 lumens ~ 180Kcd

Tree is 100 yards away.

Just to not the driver is easily replaceable, but it's a power switch, so something like Bistro or Biscotti would have to be used. This driver from MtnE would be about perfect with lots of firmware options, but he's got it listed out of stock. I can confirm it takes a 22 mm driver - measured 21.9 mm.

Probably can get a 22 mm Lexel driver here: https://budgetlightforum.com/t/-/49904

Thanks. But I do not know how to mod lights like many of you.

Does that set up eliminate or at least raise the step down to 70/75C?

You can read up on options there on that page, but looks like Bistro or BLF A6 can be set to have a turbo timer up to 180 secs, or disabled completely. Yes, unfortunately it will still require soldering of the LED wires.

Does it actually step down? Some people said the step down doesn’t work.

Yes,I also remember reading that. I was hoping that would be the case with mine.

Yes, No doubt mine steps down in about 2 minutes or so.Noticeable when I did my indoor run time test and absolutely noticeable outside. The strange thing[claims 50C step down] is that I can step it back up right away. If it was a thermal step down at 50C you would think that I could not do that.

Also the battery is constantly depleting because of the ability of the powerful LED.

I had to manually step mine down at about 1min 20s. I’m sure it was at least 50 degrees at that point. 2 minutes seems perfectly fine to me. How hot is the light when it steps down?

I do not know. When it reduced output when I was outside it was far from too hot to hold.The outside temperature was 32F/0C and the light never got too hot. That was with Three battery changes.

Usually we design the temp stepdowns to be delayed, think I was using 20 seconds or so. This way if you want to step the light back up, you got the level you want for at least 20 secs, or whatever time is programmed. The internals on these lights can take high temps, so in cold/windy conditions, the outside can stay cool comfortable so the stepdowns don't seem to work well, but really they are working as designed, or at least as best they can without an external thermistor (temp sensor) mounted on the housing.

Beam shots of MT35 XHP50.2 NW and NI40 SBT90.2

MT35 ON LEFT/NI40 ON RIGHT FOR BOTH SETS OF PHOTOS.

Both using Golisi 26650 4300mAh 35A charged to 4.19v

Small Tree is 70 yards away

Tall tree is 130 yards away.

The tint shift on the XHP50.2 is very obvious. That’s why I can never get myself to like the XHP emitters unless they are used behind a diffused optic. The tint is much cleaner on the SBT90.2. You can also see the distant trees with the SBT90.2 in the first set of photos. :+1:

Thanks. I like the SBT90.2 LED better also. You made me look at the small tree photo more. It is easy to see that the NI40 takes a brighter path on ground level all the way to the distant trees.They are about 275 yards away.Like you said, you can see the distant trees better.

I just wish the light had a side switch and Narsil like the MT35/FT03. I would disable the step down, I do not like step downs. My hand is a good judge.