That is nice. That means that good 18650s can work in 3S config as well. With lousier cells you just get more voltage sag and higher current. (Pok mentioned 4 amps with 18650, could be the regular Ultrafires or something or cells nearly depleted)
Most probably the camera settings were not locked (non manual). I can’t see the EXIF though.
Ordered 1 copy, usd 82.34 to my country via China Post Air Mail registered.
OMG, that thing is BIG! :O
I must resist.. I must resist.. I must resist..
Yes is correct, all auto settings with the camera of my tablet. The output of the x100 is really massive, my whole backgarden was lit and people were peaking through curtains to see what was going on … J)
I measured (Fluke DMM) 3,65 A with three AW 18650’s, so using 18650’s in 3S is definitely an option.
Kingkong 26650 have less voltage drop under high current draw due to higher capacity, so i guess they will have less amp draw than a 18650.
More to come stay tuned!
I just realise that i don’t have the cells for it.
I have KK 26650 - 2pcs
MKNE 26650 - 1pc
NCR18650A 3100 unprotected - 2pc
NCR18650 2900 unprotected - 2pc
Sanyo 2600 unprotected - 3pcs (not that comfy to use this as current goes up instead of what happens in the DRY)
XTARs 2600 seems to be the best but these have a slightly high resistance (PCB) so the current would be high. 
TF Flames 2400 could be an option. And my Solarforce 2400s as well (they have lower resistance than the TF Flames and definitely much less than the XTAR 2600s)
Try to see how it behaves with 2 cells. See if it tries to boost unnecessarily to 6-7A or it just cuts down the output to let the cell slowly drain off.
Previously the intial batches of triple XM-Ls like SR3800, the driver boosts unecessarily HENCE dumping a lot of current through the components before total cut off and eventually fry the drivers after like 10-20 full cycles of usage.
Trustfire J12/3T6 no such issue, they just gracefully kick down the power past a threshold.
Need to determine this with the X100. <— after all they did not recommend 18650s with this light…there could be something that we should be aware of.
I cancelled the order and got a prompt refund. It is not $50 now but $64 as the factory cannot supply at the previous price.
Got a 7amp draw with two 2 26650. Did not measure lumen output, as current was really high and close to 2C of the batteries. Whenever i use these flashlights, i put together a 4sevens protected 26650 battery, to be sure.
Anything else feel free to ask!
Wow…then it is possible to use the J12 tube and have a 3000L OTF light in shorty mode. Need to use MKNE IMRs though, ~ 20 mins run time. Probably will kill the switch quite fast as well. hehe….
Better not try, probably would kill the driver quite fast as well.
May I know why would it be when use it with shorty mode?
Components can only handle a certain amount of current (specs, and heat) plus they need to dissipate heat. In the XTAR S1, there are actually 3 parallel drivers doing the job independently on a large PCB disc. Well i don’t know the exact mechanisms but if you are trying to use lights for any long period of time, it can’t be gunned to the max.
The LED is usually not the limiting factor.
This could well be the case. I will test again when my 26650 arrive.
This manages to make the TR-J12 look small, an impressive feat.
Thank you for referring to them. They handled my order very quickly and they are very friendly, even inquiring after the package arrived if everything was handled to my satisfaction. I can recommend them.
Jut a quick comment… when I tested my TR-J12, with near-depleted cells the boost-driver pulled more (and more) current as Vbatt dropped. Current peaked at around 7A for a minute or two before the lights protection circuit kicked in and dropped current draw down to a safe ~1A low mode. When I took the Panasonic and Sanyo cells out of the light they were “scorching-painful” hot to the touch. I don’t have a temp gun, but imagine a scalding hot bowl of soup.
IMHO there is some degree of danger using lithium based cells in the 2C~3C application that these lights present, when using lower cell count configuration.
3S good cells should still be ok. Use protected cells. XTARs PCB kicks in at about 5A.
Best is just get the TF Flames 26650, they rarely break a sweat in 3S.
OMG!!! Massive heat sink.
Should I? Should i not?
Aaarrrggghhhhh!!! #$%#@ 
Brighter then J18 by bout 200-400 lumen?