NIGHTWATCH Seeker NS22 (XHP50.2/SST40 and SST20): discount code posted in op (XHP70.2 now available too)

yeahh…Just googled it……11 locations within 30 miles! KOP Warehouse is 10 miles away!

My neighbor needed help taking the trash out,74F in his unit,59F in mine!!!...I am half Husky!

I have electric heat,Not efficient…,blast in morning, maybe when a guest is here[!!],space heater in Bedroom keeps it very warm.

There’s a R015 limit resistor (0.015ohm) between the FET’s source and GND. I’ve got a pic hang on…

just received my ns22

I chose 21700 tube and stainless steel bezel, and it came with both 18650 tube, 21700 tube, aluminium bezel and stainless steel bezel!

I measure barely 1000lm, hotspot is well defined but I haven’t measured cd yet.

it’s a good host, I want to try a white flat on this flashlight

@Cereal-killer, if I understand this well, it’s actually using the FET as a linear regulator?

If so, that is very interesting.

Man that is too bad I was hoping it would be like their last model of this light. It had a linear driver:

Now i’m not sure I want to put a white flat in it

No, it’s using a .015ohm resistor as the only current limiter, it’s a standard FET driver, no regulation.

To be regulated the resistor would be on the gate side of the FET and the MCU would sense current output (voltage drop over the resistor) and alter the FET’s pwm signal to maintain that voltage at a set point.

Aren’t lower modes actually regulated though?

Pics taken from ZeroAir’s website for reference.

Using dual FETs with one being used as a CC FET would make plenty of sense.

Would removing this and replacing it with a metal jumper make it like a typical FET?

There’s what appears to be a smaller SOT-23-3 FET on the board up at the top (in my pic) but I’m not sure what it’s there to do…I do know both of the large FET’s are simply in parallel (all 3 legs are parallel between the pair which IMO makes zero sense, why waste money)

Yes

Anyone order the SST-40 model want to open theirs up and take a picture? :slight_smile:

I looped a 22awg wire on either side of the resistor legs. A few observations. I seem to have only 3 modes now ~1.5amps, 5.x and 5.6-5.7 with a high drain cell. I seem to have lost the lowest mode and some of the other modes went up in current.

EE master C_K, what say you? I’m just some guy with a soldering iron.

I say it’s a piece of crap and you should just replace the the thing lol.

BTW are your FET’s marked?

No, they look like yours

It’s BS that companies trying to make friends and sell on BLF still do that…

@tatasal,

PLEASE CONTACT ZHANG NEALE. He has NOT responded in 6 days[three emails sent] Six days ago he told me the tracking was not working because of the weekend.

DHL keeps telling me ONLY a shipping label was created.

If I do not hear from him by Monday I am filing a claim with Paypal.

My order # is 1930

Hopefully you respond to this. I sent you two PM’S a few weeks ago about the other light and heard nothing.

Have a good weekend

@wolfdog1226:

Honestly (about your pm to me)—- l don’t know what to reply to you!

Pm sent.

Ok sir,I know your doing your best.

I am frustrated w/ this Neal guy. I do not care if I am buying a piece of bubble gum or a Maserati[My Brothers car,I have a Hyundai!!]

, I do not like be ignored and get resentful towards unresponsive people. …I will get over it.

However, I will send CAPO[Boss/Chief in Italian…mobsters!] and his soldiers over to China to take care of business! lol! :money_mouth_face: :smiling_imp:

The Rofis 21700 fits fine. There’s plenty of play on the springs.

For XHP70.2 fans, this led variant in now available for this NS22 light:

After a month of ownership, here are my impressions of my Nightwatch Seeker NS22.

What I have:

  1. Emitter: SST20-4000K-95CRI
  2. Optional 21700 battery tube
  3. Total cost: $25 including optional tube and free shipping to Alaska (with a discount code). It came with extra 0-rings, a lanyard, an extra rubber switch cover, an extra lens and a lens O-ring. There were no instructions but none are needed.
  4. Battery: Sofirn 21700 40Amp 4000mAh (high drain/unprotected)

Why I purchased this torch: To try a high-CRI 4000K emitter. Most of my lights are 5000K-NW.

Here are my impressions:

Build: Feels substantial. It weighs 237g with this battery. (The similar-sized Astrolux C8 weighs 199g.)
Nice anodizing. Color is pewter-esque.
Reflector: Beautifully smooth, deep, small diameter (for a thrower).
The emitter is the smallest I have ever seen. A marvel. It is domed.
Four levels of light: Low, medium, high and turbo plus a bright strobe.
• Low is more like a medium than moonlight. It is a useful level.
• Medium is a big jump up in brightness.
• High is slightly brighter than medium.
• Turbo is slightly brighter than high.
UI: There are two modes to select from. They are described well by Lfatman on 1/22/19. Because high and turbo are so similar I selected the simpler UI (mode#2) which takes turbo out of the simplest sequence of button presses. (Turbo bump-up is still easily available with two quick half presses from L, M or H). It starts up in the last level you used before turning off the light.
Brightness: With the SST-20 emitter, high and turbo are not particularly bright, but bright enough for most uses short of search and rescue. I’m guessing turbo to be maybe 800 lm; High 600 lm; Medium 400 lm; Low 100 lm. These are just eye ball estimates.
Beam profile: Excellent: Very nicely defined and even across the beam. (It has a beam profile similar to my U-Torch 02.) There is minimal spill.
Throw distance: With this emitter throw is similar to other throwers I have that are rated around 600M.
Tint: I like the SST20 4000K-95CRI’s warm color. It is significantly warmer than my 5000K NW lights. It is pleasant and, yes, it makes colors pop.
Temperature: There are lots of deep cooling fins designed to dissipate heat and they do their job well: With the SST-20 emitter it gets mildly warm on high and turbo but not hot.
Handling: The four syringe-type flanges on the tail cap make this rear-switched light easy to use.
Portability: Overcoat pocket or cargo pants pocket. It has a good lanyard.
Run time: I recommend getting the optional tube for 21700 batteries. Only $3.

BOTTOM LINE: This is an easy-to-carry, well-built, practical, moderate distance, single-cell thrower. It is an excellent value. So good, in fact, it is tempting to buy another one (or two) with different, brighter emitters. If you don’t already have a single-cell thrower and are watching your wallet, buy this one. Buy it to use it. I will use it mine on hikes, on walks and for camping.