FREEME ✌ Nightwatch NS59v1 9*SFQ55 28000lm 2*21700 Flashlight Group Buy - ALIVE

257 posts / 0 new
Last post
Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France

You should get this high technology solution

And for me you need rewrap cell for verticale rattle, tube is little too wide.

extension top cell is necessary to use 40T with near same high technology solution.

I’ve lost my picture when I show differeenc between 40T and P42A with they raised top who make contact for P42A and no contact for 40T.

If you are in EU I check on NKON they sell P42A button top, but 2 € more the p42A flat top.
Or any 21700 unprotected with button top you found Smile

I’ve realize my picture shot with this “rondelle” inside my light.
-
-
I don’t understand the Nightwatch choice for need button top 21700 on this light.
This?

Use for 26650(NI40) and 26800(NSX4E) cell , too wide? O_O.
But it’s fun to see Nightwatch/Neal response, I warned

cybergopnik
cybergopnik's picture
Offline
Last seen: 1 month 1 week ago
Joined: 12/20/2021 - 08:02
Posts: 13
Location: Germany

I also got 40T cells, do you think a neodymium magnet has too much voltage drop at those amperages? I think it’s about 8mm diameter

Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France
cybergopnik wrote:
I also got 40T cells, do you think a neodymium magnet has too much voltage drop at those amperages? I think it’s about 8mm diameter

I leave this answer to more knowledgeable people.
I’m under amateur level for this skill, for me metal is metal, if that’s work Sad
But magnet is advice often give.

Sirstinky
Offline
Last seen: 14 hours 35 min ago
Joined: 11/02/2018 - 17:07
Posts: 1590
Location: Vancouver, WA
cybergopnik wrote:
I also got 40T cells, do you think a neodymium magnet has too much voltage drop at those amperages? I think it’s about 8mm diameter

Those magnets have high resistance unfortunately and aren’t a viable option. I don’t recommend them for that. A copper spacer is a better option. You can solder it directly to the brass driver contact to take up the space requirement.

cybergopnik
cybergopnik's picture
Offline
Last seen: 1 month 1 week ago
Joined: 12/20/2021 - 08:02
Posts: 13
Location: Germany

Thanks for the ideas, in the pics it looks like the driver has a brass post which should work fine with flat tops, just the connection between the cells is not given. Maybe I’ll bend some copper wire to make a spacer until i have a brass plate or something better.

vonroyale
Offline
Last seen: 6 days 14 hours ago
Joined: 10/06/2021 - 17:43
Posts: 140
Location: Philadelphia

tactical_grizzly wrote:

Will include all that in my full review. For now based on the one runtime test I’ve done, I’m getting just under 2000lm sustained for about an hour and a half on P42A’s.

2,000 or 20,000? 2,000 seems a little low for sustained output.

raccoon city
raccoon city's picture
Offline
Last seen: 4 hours 1 min ago
Joined: 10/06/2010 - 02:35
Posts: 18879
Location: Palm Desert CA ~ West Coast is the best coast

If the flashlight starts at 22,000 lumens, I wouldn't be surprised if the sustained lumens are only 2,000 lumens.

Unfortunately, that's pretty common with flashlights.

tactical_grizzly
tactical_grizzly's picture
Offline
Last seen: 5 hours 12 min ago
Joined: 11/08/2020 - 14:54
Posts: 678
Location: North Texas

vonroyale wrote:
tactical_grizzly wrote:

Will include all that in my full review. For now based on the one runtime test I’ve done, I’m getting just under 2000lm sustained for about an hour and a half on P42A’s.

2,000 or 20,000? 2,000 seems a little low for sustained output.

It’s about 2,000lm sustained. Not very high, but it’s not that large of a light and I suspect it’s using a low efficiency driver, so 2,000lm sounds about right to me.

Vodak-Yarout wrote:
I don’t understand the Nightwatch choice for need button top 21700 on this light.

I believe it’s to ensure the two cells make contact in the middle. Two flat top cells may not make contact in the middle of the tube, unless the tops are a little bit proud like P42A’s.

Correllux
Correllux's picture
Offline
Last seen: 2 days 43 min ago
Joined: 04/27/2019 - 22:23
Posts: 1496
Location: USA
cybergopnik wrote:
The writing on the switch looks like “Omten PBS101” according to Omtens website it’s rated for 3 Amps at 30 Volts, i wonder how it will hold up

I was browsing their site recently and every single push button switch has the exact same full range of specs listed. Seems like not long ago they listed everything as AC amps but everything there now says the same 30V/1A/3A, same resistance, same cycles. Maybe that’s accurate if they all use basically the same mechanism. We know they can handle quite a bit more than stated anyway.

In another thread someone suggested that one of Simon’s lights had a “more robust” switch but couldn’t back that up with numbers or anything…doesn’t look like an Omten (not on their website anyway) and I couldn’t find a switch/brand with the same markings. I think some of the cheapest cheap cheapie switches use inferior plastic that will melt or deform at lower temperatures, maybe poorer springs, but so many of these are like the same switch with different contact configurations or footprint sizes. Ones used in our typical China flashlights at any rate.

Correllux
Correllux's picture
Offline
Last seen: 2 days 43 min ago
Joined: 04/27/2019 - 22:23
Posts: 1496
Location: USA

Has anyone ever tested the resistance/voltage drop and/or upper limits of current for neodymium magnets when used as contact points? I was thinking about this a couple times over the last year…can’t find any past threads or reference on BLF but it seems like I remember hearing it mentioned long ago. I suppose it would have variables that include the grade of magnet, quality and micron thickness of the nickel plating, contact pressure between points, etc. It would be interesting to see the numbers, though, for something like a typical N35 lower cost version.

Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France

vonroyale wrote:
tactical_grizzly wrote:

Will include all that in my full review. For now based on the one runtime test I’ve done, I’m getting just under 2000lm sustained for about an hour and a half on P42A’s.

2,000 or 20,000? 2,000 seems a little low for sustained output.

2.000 on static environement, probably at 20 celcius degres.
In exterior in dynamics environement in night at 10-15 degres can only increase this base perform.
This is the dissociation to be done on these tests.
The EC06 who was a brick have close similar perform compare to test environement statics
Any host with an effort on thermal design have a much bigger difference between the test indoor and the reality outdoor.
Of course, more the night is cold, more the perform is high more the gap is high between brick and host with fine LOL
For example my Nightwatch NI40 with SBT 90.2 under 5 celcius degres was pretty hard to overheat, it’s a real pleasure to use Big Smile , In summer at 15-20 degres it’s really eazy to overheat and have a burning light in hand Smile
-
-
In fact with this thermal design, use this light with an other for creat a duo is interresting, they heat down very fast when you don’t use.
-
-
So 2K sustain on static is good, memory EC06 sustain 1500 lumens at static environnement 20 celcius degres so LOL
With this design, no reason Nightwatch too low
-
-

If anyone have lumens output at medium, I can compare (feeling only) with my two light during a night walk.
For check if I see with naked eye difference between one light after 10 (or more) minute at medium and light not use with full cell.
No my interrest yesterday just fun for this quick use, In fact I found the body was “cold” for a nightwatch with this output with reasonnable heat at head and a sensation of cooldown at medium after hard push in High/turbo, Not stay at high temp in head with reasonnable output on medium mode.
Its assumption for the moment I have to try it more, but the first impression after 2 hours outdoor is really good about heat gestion.

tactical_grizzly wrote:
Vodak-Yarout wrote: I don’t understand the Nightwatch choice for need button top 21700 on this light
.
I believe it’s to ensure the two cells make contact in the middle. Two flat top cells may not make contact in the middle of the tube, unless the tops are a little bit proud like P42A’s.

Off course, you are in right, I had forgotten this notion Crying
tactical_grizzly
tactical_grizzly's picture
Offline
Last seen: 5 hours 12 min ago
Joined: 11/08/2020 - 14:54
Posts: 678
Location: North Texas

Excellent point! I do runtime tests in a small room with the door closed. The ambient temperature is 20-21C and the air conditioning comes on periodically, but does not blow directly on the light. I do this for consistency, but you are absolutely correct that real-world use of a light outside when you are holding it and with air moving over it will result in higher sustained output.

robocop
robocop's picture
Offline
Last seen: 1 month 2 weeks ago
Joined: 11/09/2021 - 08:11
Posts: 25

I’m pretty happy with the light. It is by far the brightest light I have. It get hot very quick but that is understandable with the output. I don’t have any kind of measuring gear but it’s bright. It cuts on and off a lot because I don’t have a spacer to accommodate flat top to button top but that is fixable. I have a 21mm PCB board spacer from convoy on the way that will hopefully work. (If not let me know or if there is a better option)

The light seems well made. Threads are good. Button is pretty beefy. Overall pretty happy.

stephenk
stephenk's picture
Offline
Last seen: 4 hours 51 min ago
Joined: 01/30/2016 - 05:09
Posts: 2179
Location: Australia

vonroyale wrote:
tactical_grizzly wrote:

Will include all that in my full review. For now based on the one runtime test I’ve done, I’m getting just under 2000lm sustained for about an hour and a half on P42A’s.

2,000 or 20,000? 2,000 seems a little low for sustained output.


Not really. Very few lights can sustain more than 1,500lm for 10+ minutes.
Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France

robocop wrote:
I’m pretty happy with the light. It is by far the brightest light I have. It get hot very quick but that is understandable with the output. I don’t have any kind of measuring gear but it’s bright. It cuts on and off a lot because I don’t have a spacer to accommodate flat top to button top but that is fixable. I have a 21mm PCB board spacer from convoy on the way that will hopefully work. (If not let me know or if there is a better option)

The light seems well made. Threads are good. Button is pretty beefy. Overall pretty happy.

No worry with that, i’ve use this for my test ^^

Don’t keep that for the futur, I search next week a similar copper 3-5 mm for put beetween the two and that was nice.
-
Happy you like this light.
Nightwatch make generally good job, the big con is they release only cool white LED, after that if cool white only is not a con Blushing .
Reason I buy 2 by 2 Nightwatch light, I use it without respect so I keep a back up if the first died.
They have release better host (and I expected worse, finally it’s still very acceptable) but for this price Thumbs Up

Sw1f7
Offline
Last seen: 1 month 2 weeks ago
Joined: 08/27/2020 - 10:13
Posts: 37
Location: South Africa

Just ordered one with batteries and SS bezel, thanks FREEME.

Also grabbed an Amutorch XT60 SFT40 while I was at it, discount code applied to the XT60 as well, paid $64.46 with battery…

TermsakC
TermsakC's picture
Offline
Last seen: 21 hours 43 min ago
Joined: 06/05/2021 - 22:47
Posts: 416
Location: Singapore

Got my “CHAOS” flashlight this afternoon.

The package didn’t include any “O” rings, lanyard, or manual. But there are two “tactical” aluminum rings.

Put in two flat-top 21700 Wurkkos batteries together with a Convoy 21mm spacer on top. And it works OK. The powerful beam is floody.

I wonder what brand of 21700 button top batteries with 40A discharge rate you will get if ordered them together with this flashlight. Not easy to find button top batteries with such high discharge power.

The body can be separated into two shorter tubes. But when putting in only one battery cell, the flashlight doesn’t work. Need to put in two battery cells.

Fedtro
Offline
Last seen: 11 hours 9 min ago
Joined: 07/17/2020 - 10:40
Posts: 272
Location: Corropoli, Teramo, ITALIA

Very good, I use those to convert my Vapcell T42 from flat-top to button-top

 

Sw1f7
Offline
Last seen: 1 month 2 weeks ago
Joined: 08/27/2020 - 10:13
Posts: 37
Location: South Africa

Could someone please post a link to the mentioned 21mm Convoy spacers?

JordanZHP
Offline
Last seen: 1 week 2 days ago
Joined: 03/25/2017 - 04:37
Posts: 560
Location: California

https://a.aliexpress.com/_mLa9epC

I placed one of these between two 40T cells and it seems to work well.

Sw1f7
Offline
Last seen: 1 month 2 weeks ago
Joined: 08/27/2020 - 10:13
Posts: 37
Location: South Africa

Thanks JordanZHP.

ArtieT59
ArtieT59's picture
Offline
Last seen: 9 hours 8 min ago
Joined: 02/25/2020 - 17:55
Posts: 3521
Location: CT, USA

Could I have the coupon please Freeme?

[FLF] Five Light Friday https://budgetlightforum.com/node/78749

Check out some of my new lights (picture heavy) and quick first impressions of them here: https://budgetlightforum.com/node/77180

My Sft40 beamshots / comparison thread: https://budgetlightforum.com/node/78100

The BLF GT with SFT40 (2300lm, 2700m+ @ 30 seconds!)
https://budgetlightforum.com/node/79561

tactical_grizzly
tactical_grizzly's picture
Offline
Last seen: 5 hours 12 min ago
Joined: 11/08/2020 - 14:54
Posts: 678
Location: North Texas
ArtieT59 wrote:

Could I have the coupon please Freeme?

The coupon is in the first post right under the discounted prices

madcrisis
Offline
Last seen: 2 weeks 5 days ago
Joined: 08/24/2020 - 22:27
Posts: 22

Got mine today. Thanks Freeme!

The batteries that are included in the package aren’t actually button tops. They’re flat tops with a small copper (?) Disk soldered on.not sure what type of 21700 they are. they have a dark grey wrap and say “21700hp 3.7v 3000mah 20c”. They came pretty low charge so they’re on the charger now.

i can test the lvp on this light next week with a PS at work.

Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France

madcrisis wrote:

i can test the lvp on this light next week with a PS at work.

RIP our cell if you try Smile

Strange cells O_0 you have a picture for share?
It’s would be sad to damage “special” cell

madcrisis
Offline
Last seen: 2 weeks 5 days ago
Joined: 08/24/2020 - 22:27
Posts: 22

Yeah I’m going to use a bench top power supply and see how low I can drop the voltage. Hopefully it’s simple and doesn’t damage anything. Also hopefully this picture of the battery uploads right. If not here’s the link

https://imgur.com/a/qCXMSAp

Vodak-Yarout
Vodak-Yarout's picture
Offline
Last seen: 1 month 4 days ago
Joined: 11/22/2021 - 11:49
Posts: 135
Location: France

Ho, sorry, I’ve forget it’s you who have say he can try with external power supply.
Normaly no, just open the circuit

Thank’s for sharing Smile

Strange “custom”, If they works Innocent
Never see button top solder in this way.
HP remember Nitecore classification cell, same cell with same capacity with various head, HP/HPI ….

madcrisis
Offline
Last seen: 2 weeks 5 days ago
Joined: 08/24/2020 - 22:27
Posts: 22

Holy crap! Has anyone confirmed this light actually has temperature control?it gets too hot to hold and fast! Love the amount of light but I’m going to need gloves the next time I use it.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 23 min ago
Joined: 11/29/2017 - 12:34
Posts: 6381
Location: Canada

@madcrisis, the temperature control does work, but I think I saw one of TacGriz’s post and the temperature at which the flashlight throttles is rather high.

To be honest though, this was not unexpected: you’re consuming about 200W+ on turbo, which mean passive cooling in this form factor is out of the question.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

cowboygg
Offline
Last seen: 2 months 1 week ago
Joined: 10/30/2018 - 05:00
Posts: 31

Vodak-Yarout wrote:
Ho, sorry, I’ve forget it’s you who have say he can try with external power supply.
Normaly no, just open the circuit

Thank’s for sharing Smile

Strange “custom”, If they works Innocent
Never see button top solder in this way.
HP remember Nitecore classification cell, same cell with same capacity with various head, HP/HPI ….

Lishen 21700HP

Pages