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

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.

have the issues with light been fixed, 40t can fit and no switch problems ??

Some light pollution in Cell Tower pics. All illumination on tower is from NI40.

Tower is 600Y/548M Away

Temp based throttling works well on mine; after initial light activation on turbo, it starts throttling after about a 80 seconds at an indoor ambient temp of 70 degrees with no cooling fan. You can watch the lux meter drop pretty suddenly when it happens, and the light never quite gets too hot to hold. I imagine it’s about 120°f. I didnt break out my infrared temp gun but too hot to hold for me is about 130°f.

Turning it off and then on seems to reset the temp throttling for a bit- maybe it’s delayed like Tom said- because it will jump back up to the level it was at before the throttling started. Then continue to drop down fairly quickly. It will become too hot to hold after a 3rd reset.

The difference in ceiling bounce lux between the golisi 4300 mah cell and the shockli 5500 mah black label is only about 8 to 10 percent at turn on +10 seconds.

Outdoors is where the golisi shines. Since the cooling fins in the light work extremely well and it’s cold outside where I live, no thermal throttling occurs and the golisi holds more Lumens noticeably longer than the shockli. However the shockli holds a lower level longer. But that’s not what I’m after for this light, I use turbo bursts for distance when needed while out walking to check on my animals, and lesser modes up close. This is a (back) pocket light after all. Long term long range searching, like for coyote hunting, is relegated to my k75 and k70.

Overall, I like it alot- it demolishes anything else I have that will fit in my coat or back pocket, and as a bonus, the tint is nice.

I remember when 1000 lumens and 30kcd were an impressive sight for a hand held flashlight, much less one this size. My first real led light besides my surfires was a fenix mt35 and I was blown away at the performance then. This NI40 is even smaller, with 5X the lumens and 7.5x the throw!

Extra cells are easy to swap in the dark since there’s only one to fumble with, and the rear switch is easy to find in the dark compared to my thrunite cat v6.

Edited to add:
Turbo memory has quit working. Memory for every other mode works perfectly. I guess I’m fine with that, since a full turbo burst from off when not needed, when I cant remember what mode I last used us less than desirable.