I placed one of these between two 40T cells and it seems to work well.
Thanks JordanZHP.
Could I have the coupon please Freeme?
The coupon is in the first post right under the discounted prices
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.
RIP our cell if you try 
Strange cells O_0 you have a picture for share?
It’s would be sad to damage “special” cell
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
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
Strange “custom”, If they works 
Never see button top solder in this way.
HP remember Nitecore classification cell, same cell with same capacity with various head, HP/HPI ….
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.
@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.
Lishen 21700HP
NS59v1 was a HUGE hit at the Texas Flashlight Club meeting tonight. It blew everything else we had (MF01S, MF01X, X50 CRI) out of the water.
Cant wait to get mine! :sunglasses: What cells were you using?
To be fair, I’m sure the X50 CRI has a rather significant advantage over the NS59v1 
I’m using P42A’s I salvaged from a dead X50 battery pack right now. I’m getting 22,000lm @ turn-on with those. Neal is sending me some of his “special” batteries that will allegedly fix the fact that my sample does not have LVP. I’ll measure output with those too.
And vice versa, since one is 1/4 the price of the other. Here are beamshots if you want to take a look.
NS59v1 & X50 CRI
MF01S 6500K & MF01X
These really don’t capture just how wide and bright the spill is from NS59v1. That’s the most impressive thing about it.
Well maybe, but for the price? No way. I have one hopefully coming for review (if Neal gets around to sending it). On paper, this could be the most powerful affordable flashlight ever. 28,000 Lumens for under $100 is insane. I actually believe Nightwatch Lumen numbers…the NI03 I tested got super close to advertised, off by 150 lumens and I think this will get close to 25,000 on 30ts.
Since this light uses an extension tube, I’m wondering if the driver could take more than 2x 21700 batteries? As it would make for a great long run time baton.
@glenn7, I’m sure it could take more cells. However, you’d have to make your own parallel pack if you do not want to melt the driver lmao.
Why would making my own parallel pack stop the driver melting? I would just use a spacer or solder blobs between cells if the driver could take the voltage.
So I guess what I’m asking is what is the maximum voltage that the driver can take.
BTW I’m quite impressed with this light - a massive bang for your buck! I have had 2x Nightwatch NI40 SBT90 Gen2 (sold) - the switch on the NS59v1 is half as stiff and a much better feel IMO with a loud crisp click with no guess work compared to the NI40.
I don’t think there is a better light in this class out there for the price, might do some beam shots to compare this to the Manker MK38 SFT40 for reference….
OK did some beam shots of a couple of lights.
Shots taken at 2x zoom on iPhone 12 pro max trees on the right are at 70 meters (or 2755.91 inches :0)
First tower is 250 meters, tower at the top of the hill is 520 meters.
First is the NS59v1-Turbo
Next is the Manker MK38 SFT40 - Turbo
Next is just for a bit of fun - my old custom X-led that has 30 x HXP70.2 and does 50,000 lumens straight for 40min, then you can change out the Ryobi battery over and over. It has a really wide beam that can light up everything at an angle of 200 degrees, it has a switch to make the beam narrow for throw or wide for an area light it also has a dimmer knob and 2 speed fan.
X-led with throw turned on.
