Will these fit in? http://www.fasttech.com/products/1420/10001980/1141104-panasonic-ncr18650b-protected-rechargeable-3400mah
Great, thanks! 
Here’s a used one:
http://www.cpfmarketplace.com/mp/showthread.php?300337-WTS-EAGTAC-SX25L3-non-kit-version
I just got mine MT-G2 variant) from Eagletac-USA (division of Pacific Tactical Systems in Calif.) and got a quite reasonable deal with free Priority Mail shipping- you should call and talk to Julie (Mike’s wife); she’s a sweetheart and am convinced she’ll do everything possible to help you own one. BTW I got the base model (don’t need the gadgets the kit comes with), and I like the idea of ordering from a US-based dealer who supports their product. The light itself is a BEAST- a virtual PHOTON HOSE- and I mean a fire hose not a garden hose-it has decent throw at 317 meters, but with a spill angle of 57 degrees, it throws a virtual wall of light…the spill is almost as intense as the hotspot, because of the wide viewing angle of the LED…and the UI is simple and quite intuitive…I LIKE IT
I’m using them in mine, so they seem to fit just fine
That’s interesting because Eagletac says in the tech specs that the 18650s need to be 67-68.5mm yet those cells are 69.4mm. Is it really tight to screw down the tailcap or is it not too bad?
not tight at all; screws down just fine. It may be that the original spec is from the test version, and they made the battery compartment more roomy to accomodate protected cells….I don’t know….but I just checked mt SX25L3- I’ve got 3 18650Bs in there- all protected, button-top Panasonics- and there is ample room for them- no problem screwing down the tailcap, no tightness, binding, etc….
Thats great, thanks for that. I have some of those spare so I wouldn’t have to buy extras.
I can confirm Steve’s comments. These 69.4 MM cells work just fine.
[quote=kreisler]
My Protected ncr18650b are from the Wallbuys group buy with these measurements:
cell1, 70.31mm × ø18.45mm
cell2, 70.27mm × ø18.48mm
cell3, 70.24mm × ø18.42mm
cell4, 70.21mm × ø18.47mm
I have checked. All 4 cells fit in my SX25L3 MT-G2 (serial number: 5 0000 770**) without problems, with enough room left for even longer cells cha!
hope this helps :)
Thanks for this info!
To Kreisler too! 8)
im curious about the flood and spill? do you have any multi emitter xml lights? king or 4, 5, 7, 9. 12, 15 xml lights by any chance? if so, which would this compare to.
Trustfire TR-3t6, Blackshadow Darth (parent company=Skyray), Xtar S1, Lumapower MVP, Coast X21, Fenix TK45, Shadow SL3, and a bunch of others that I can’t remember….not really a fan of the King….to answer your question, in my other multi-emitter lights, the hotspot is more distinct, and the spill is 40%50% less intense than the hotspot….maybe that’s because all of my multi-emitter lights use a separate (small) reflector for each one of the emitters…there are variations between lights, of course, but with the SX25L3 MT-G2 the spill is less distinct from the hotspot in fact, it hardly has a hotspot- it just produces a WALL of light- the spill is almost indistinguishable from the hotspot, but is much brighter than the spill on my other multi-emitter lights.
To answer your second question (which it’s most similar to), the beam is most similar to the s1- but having said that, it’s still just a lot more light across the entire beam, it throws light EVERYWHERE within about a 55 degree cone…like I said in my previous post, a PHOTON FIREHOSE…. strangely, the beam is most similar to some of my older but well-driven MCE lights, only it’s like an MCE on steroids, with a wider beam…without the gaps and donut holes. I think that when you’re dealing with this many lumens from a single (albeit large) point source, IMHO that’s almost inevitable.
sounds like my kind of light. ive been holding back, because of the price. sorta hoping and waiting there would be a clone out shortly or better yet, a multi mt g2!
but the way your describing the beam, it reminds me of my 9xml light.
The specs page says "For MT-G2 verison, ensure the protective circuit on the 18650 batteries have current limitation of higher than 5A. Always use proven EagleTac batteries for best performance and reliability." and the driver is the C5000 ST driver which means that its max current is 5000mA. The other page says "We design this circuit to survive the toughest torture environment including: 1) repeatedly over-night burn-in test w/ minimal cooling, 2) over input voltage test of up to 20V, 3) over-driven output current test of up to 5.5A, and 4) high temperature bake test."
3 cells in series and drawing 5 amps from each of it. that's pretty hard imo. (i haven't figured it out yet how to measure the amps from 3 cells in series. it does not use any battery carrier, so it's too challenging to measure the current)
Bit of a thread dig here, Kreisler’s quote says the batteries must be able to supply greater than 5A for the MT-G2 version.
In HKJs review of the Panasonic Protected NCR18650Bs it says that the recommended discharge current is 2.9A. However the protection circuit isn’t tripped until 6.7A, so I am a little confused there.
So is it safe to use those batteries in the SX25L3? or should I be buying some more PD batteries? I have 4 of the NCR18650Bs spare so being able to use them would be favorable but at the same time I don’t want to use them just because they work if they are not really adequate for the job?
Hey LSX,
I’m using KeepPower protected 3400’s in mine.
I just got in some SamSung 20R’s which has a 15 to 20 amp discharge.
The SamSungs are meant for another light that’s being modded right now but I tried them on the EagleTac.
I don’t have a light meter, but as far as what my eyes tell me there is only a slight improvement.
The hotspot is a little more intense and the spill is practically the same.
My eyes can’t tell the difference in the spill, although a meter would probably register a gain, since the hotspot improved.
We are still in the very process of measuring the output of the light. And we use Protected NCR18650A (3100mAh). After repeated tests we got 2400 Fenix lumen 1sec after activation, so all is good. I cannot measure the actual current draw (i'd need 7 hands for it lol) but it is the C5000 ST driver specification that it draws a nominal 5 amps. The light is also "3) over-driven output current test of up to 5.5A".
selfbuilt used AW 2200mAh and unspecified 3100mAh cells too.
If it takes an input from the batteries of 5 amps at 12 volts to get a driver output of 5 amps at 6.5-6.6 volts, something is very very wrong.
Worst-case, it shouldn't take more than a 3 amp input to get their rated output.
i am seriously considering this light (ET sx25 mtg2), so can anyone tell me how it compares to nitecore tm11 (i don’t have anything more powerful) i want to know if it has more throw than tm11