XTAR S1 (3*XM-L U2, 2800lm)

XTAR S1

LED: 3x Cree XM-L U2
Battery: 3x18650/18700 Li-ion
Working Voltage: 2.75-4.2V
Output/Runtime: min. 30lm (330h), max. 2800lm (95m)
Max range: 360m
Max Intensity: 32500cd
Switch: Head magnetic ring switch
Mode: SOS/Strobe/High/Preset/Select
Water resistance: IPX-8 standard
Material: 6061 Aluminium, HA Type-III
Impact resistant: 1m
Size: 83mm (head), 47mm (body), 240mm (length)
Weight: 888g (excluding batteries)

pics











+ new XTAR 18650 3100mAh (Panasonic NCR18650A cell inside) coming soon

Re: XTAR S1 (3*XM-L U2, 2750lm)

Interesting...
It would be great if it would really have 2750 lumen's we'll see, 83mm head looks promising for some throw - but good find gopajti!!!

Re: XTAR S1 (3*XM-L U2, 2750lm)

Looks like cannon!
I've heard it's a follow-up model for D30, D31 released in 2009.
Thanks for good information. gopajti!

Re: XTAR S1 (3*XM-L U2, 2750lm)

Looks good , but only Max range: 359m and Max Intensity: 32300cd, IMO a little bit low for this kind of light.

Re: XTAR S1 (3*XM-L U2, 2750lm)

When looking at the figures, it's not bad compared to TM11 & RRT-3 .
- S1..............TM11.........RRT-3
- 32,300 cd....20,000cd....30,000cd
- 359m..........283m..........346m

Re: XTAR S1 (3*XM-L U2, 2750lm)

Well, in that case, those are nice numbers

-only the working voltage isn't good. "Working Voltage: 2.7-4.2V" - 3* 18650 3,7V = 11,1V.

Re: XTAR S1 (3*XM-L U2, 2750lm)

I guess they're connected in parallel

Re: XTAR S1 (3*XM-L U2, 2750lm)

I guess the cat's out of the bag now. I do like the preset & select system they use.

Re: XTAR S1 (3*XM-L U2, 2750lm)

more pics
http://www.cpfmarketplace.com/mp/sh...ng-the-Xtar-S1-3x-XML-U2-2700-Lumens-3x18650!

Re: XTAR S1 (3*XM-L U2, 2750lm)

It sure is a humongous torche

Re: XTAR S1 (3*XM-L U2, 2750lm)

I parralel if I understand correctly, that means you add up the mA capacity. So, it would be 4.2V input and about 6000~8000mAh capacity depending on the cells.


While that may seem great, at potentially 9A hitting each cell......well lets say the OTF lumens could and in my experience do suffer due to cell sag.

IMHO it would have been better off like the Dry XM-L which is 12.4V input and only 3A~5A per cell. Same power just less cell sag.

bigC

Re: XTAR S1 (3*XM-L U2, 2750lm)

bigchelis said:

While that may seem great, at potentially 9A hitting each cell......well lets say the OTF lumens could and in my experience do suffer due to cell sag.
bigC

Click to expand...

ummmm, I'm no expert, but I don't think so

if each cell were dumping 9A, that'd be 27A at 4.2V. There wouldn't be any sag because it would go poof...

http://batteryuniversity.com/learn/article/serial_and_parallel_battery_configurations

Re: XTAR S1 (3*XM-L U2, 2750lm)

Actually, it is about ~3.7V input for the driver after sag and current is around 9 amps. Each cell sees 1/3 of that, 3A. Like the TM11 but that one has 1 additional cell. Those 3 cells would act as if it is one big cell with 8+ AH battery.

Re: XTAR S1 (3*XM-L U2, 2750lm)

bigchelis said:

IMHO it would have been better off like the Dry XM-L which is 12.4V input and only 3A~5A per cell. Same power just less cell sag.

bigC

Click to expand...

Series or parallel, driving 3 LEDs at 3A each pulls 3 amps from each battery regardless.

Re: XTAR S1 (3*XM-L U2, 2750lm)

Looks like a control ring interface?

"Switch: Head magnetic ring switch"

Re: XTAR S1 (3*XM-L U2, 2750lm)

first post updated

Re: XTAR S1 (3*XM-L U2, 2750lm)

Woooooooh its massive!!

gopajti said:

Click to expand...

Now that's a flashlight!

Where do you get these pictures gopatji?!

Jake
S1 pics originally posted: shoudian forum. (battery pictures are mine)