Thanks ImA4Wheelr. Would you like to add a link for the MF driver in your post and I will collate all the posts with drivers in them in the original post. Now I know why people book the first post. Cheers.
Done. Thank you.
The driver from my LusteFire 3XU2-X3 triple MT-G2 modded light will pump about 2.8A into each emitter (parallel, ~8.4A total) in stock form. Better add some heatsinking to the driver though, as it gets hot quick, especially the FET and diode (big black parts). On this light, I get about 4800lm OTF. Not bad, but I want a driver that can actually drive 5A/emitter for a minute or two, and handle 3A/emitter for at least 10 minutes.
Most likely wishful thinking, but I gotta dream a little. 
Great Idea!
Here are some results from me. All measured at the emitter.
Power supply was used. Voltage reading is analog, so it may not be 100% spot on…
My power supply is rated for “4A max at 5V” and “3A at @12V”. That could be an issue. But it did not seem to have issues (cut-off happens it it have issues).
Both 5A drivers are rated to be 100% 50% 5%
DUP-S5
My driver had SOS in between low and medium. :Sp (not as described)
12V
0,49
SOS= full (high) output
2,44
4,88
9V
0,48
2,45
4,05
7,5V
0,16
1,15
2,78
6V
0,04
0,18
0,44
I could mention that with an XM-L2 on copper, it was spot on 5A, 2,5A 0,5A when I tested it some time back @ 7,5V. At lower/higher driver circuit input voltage it was slightly off, mostly lower, but also slightly higher than 5A was seen too.
FL-2
(mine had strobe and SOS with full output. It was supposed to be a 3-mode, which others have gotten. Readings only show low, medium and high)
12V
0,47
2,43
4,9
9V
0,44
2,52
4,06
7,5V
0,15
0,81
2,39
6,5++V (hard to see, I did not measure. Analog reading only shows 6V and 7,5V. )
0,05
0,30
0,89
6V, did not work properly
Driver circuit from my STL-V6, which was the same as in my TR-3T6.
This driver circuit also have sos and strobe.
12V
0,23
1,10
2,58
9V
0,25
1,16
2,72
7,5V
0,12
0,79
2,04
6V
0,02
0,10
0,29
BOOST/BUCK 3-18V TRIPLE XM-L CIRCUIT BOARD
15V
0,08
0,94
4,00
12V
0,09
0,89
3,74
9V
0,08
0,77
3,27
7,5V
0,06
0,65
2,81
close to 7V (estimate due to analog reading)
0,05
0,59
2,61
6V (did not work properly)
If my power supply did not limit some of these results, then it clearly shows the importance of using 3 batteries if (sustained) high output (3+A) is the goal on an MT-G2. I don’t think my powersupply had issues with the short periods it was used on high with the 5A drivers. My 12V numbers on the IOS 3-18V driver are very similar with MRsDNF measurements with batteries having a resting voltage at 12,2 which would probably be around 11,7 at load. Our numbers match very nicely…
Thanks Guys. Keep it up. Fantastic info RaceR86. The measurements from the 3 to 18 volt driver are not that different. Taking into account voltage sag from my batteries I’d suggest they would be very close. Links to your results have been added into the original post.
Yupp. The results are basically the same.
Its the “IOS 3 mode 3-18V driver” I used… Maybe you should just call it that since both you and I have tested it but calling it different names (Im thinking about the description in OP.)
I just used the product descrption from the IOS webpage.
I know Relic38 have resistor modded that driver in this thread and used it in combination with MT-G2.
The MF driver is also easy to resistor mod… 0:)
Done. The only problem with the MF driver is my lack off love for flashy modes. I’ll add the resistor mod in as well.
I shared a build with relic38 using a DRY driver in a Trustfire X8 clone. The reason being the X8 has 19/20mm driver groove, and the clone has a 22/23mm driver groove on the first step and and 19mm groove underneath. Of course the DRY specs are:
PCB diameter: 23MM
for 3*CREE XM-L T6 LED in series.
Input voltage:7.4V~12.8V
4 modes:
Lo——0.1A
Mid—0.5A
Hi-2.25A
Turbo—Direct Drive Max 4~5A; Turbo mode will step down to Hi mode after 120 secs in order to protect driver and emitter from burning.
With mode memory
Using turbo is DD, and the actual output depends on the cells and what they can deliver, ruff estimate 7.4 volts to the emitter, and ruffly 4 to 5 amps. relic said it got 2000 otf lumens, relic can post results here: The DRY works well and is only $5…
Using this host:
http://www.ebay.com/itm/121021214397?ssPageName=STRK:MEWNX:IT&\_trksid=p3984.m1439.l2649
The complete build was:
Host: $19.80
Emitter: IO $21.85
Driver: CNQG $5.00
took only about 15 minutes, basically just an emitter/driver swap…
Flomotion’s numbers match mine fairly closely. Using Sanyo UR18650ZT cells, I get right around 5A on turbo and just over 2000lm OTF. It is advisable to leave some resistance in the light, although I’m pretty sure I addressed all areas J) (springs, wires). I used a Noctigon, which is highly recommended.
Not bad for a two-cell light this small.
Flomotion, how is the beam with that X8 clone? All flood I am assuming? More throw than an XML P60?
The IOS 9A driver does 5 amps from two 18650, and an honest-to-god 9A from three. I was not expecting that. :O
So……how bright at 9 amps?
The beam is somewhat floody with a very large hotspot. On mine there is a slight ring around the hotspot, but only noticeable when white wall hunting. Outdoors, this is a very nice flood light, that can throw pretty god too. I didn’t measure throw yet though.
Flomotion has a build thread somewhere. I Probably should have answered this question there.
Finally, 9 amps (4000 lm?), I demand that! What 3x18650 (3 x26650) single emitter host fits that driver?
Trustfire TR-1200, relevant info starts here: https://budgetlightforum.com/t/-/18955#comment-411218
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Tailcap numbers for the IOS 9A driver
2x 18650
low .55A
mid 1.95A
high 4.85A
3x 18650
low 1.06A
mid 3.05A
high 6.57A
Driver makes a pretty wicked squeeeeeee on mid & low with every battery config I've thrown at it (including CR123s).
So in simple terms, the emitter is driven to around 100W on 3 cells? :bigsmile: :bigsmile:
Its closer to 80 watts at the tailcap……so less than that at the emitter
Even if the cells sagged to 4V each at turn-on, that would still be 12V * 9A at the tailcap = 108W before driver losses to the emitter. Either way, this is beginning to sound very interesting!
Tailcap is not 9 amps though :bigsmile:
Sorry, I saw this and assumed 108W at the tail… now I see the other posts. Thanks!:bigsmile: