I am looking to mod my JM07 to ~3.5A to the LED on high, I was wondering if anyone had taken this light apart and checked out the driver to know if it is possible to mod it to do that or if I would need to do a driver swap. Since this light has an awesome pill and body for wicking heat away from the LED I figured that 3.5A should be no problem for it.
People must be so happy with it that they haven't modded this light at all ;) Really hoping that someone may be able to answer this, lol.
There is a guy here (E1320) that does a lot of current mods for another guy here (Foy). I'm guessing that either E1320, Foy, or 2100 can point you in the right direction. I think 2100 has this light as well.
Another option might be... I have seen some people add a "nuke mode" to their lights. Basically they add a second switch to the light, usually a temporary push button, that makes it direct drive for as long as you hold the button down. that might be a pretty awesome mod if you can swing it.
If you don't want to do that, it may be as simple as soldering another chip onto your driver board to bump the current up a bit. I think it will effect every mode on the light though, not just the high.
Yea, my assumption on how the 7*135 drivers work is that the uC controls modes by putting a specific voltage to the MOSFETs gate for each level. If you stack chips you just have another chip conducting the same current since the voltage at the gate would be the same and you would increase current at all levels sadly.
Funny you started this thread...
I just got my JM07 today hoping to be able to swap out the driver with a 8 x 7135, but it looks as though the current driver was press fitted in using a bronze ring. I was hoping to be able to screw it out :( The driver is also larger than 17mm.
I really don't understand the 2-3 second delay needed to store the current mode and not switch to the next mode when turning it back on. I really enjoy my lights having < 1 second time for that - that way mode switching is deliberate doing a short press while the light is on. I really don't want to risk ruining a $50 host just to change that and add a little more juice.
Well, I will take a look at it more and see what may be possible to do. If nothing then I won't do anything, but if I can do something I will, at the very least I will probably swap in a NW LED.
Ok, I REALLY need to get to the driver in this thing, would love to replace it with a 105C WITHOUT strobe or SOS, those are really starting to piss me off on this light.
I have this light, but 2.4A fully regulated is ok. I think mine does 590 lumens OTF sustained. That's already nearly maxed out for this kind of light, probably you won't go above 680L OTF sustained (IIRC Ultrafire 980L around that level). 10-seconds burst OTF makes no sense.
Intensity isn’t the convern anymore, it’s getting rid of these damn blinky modes that’s priority #1 now.
Eh? Mine does not have strobe or SOS.
The JM05 can alternate between 5-mode or 3-mode.
see this post: http://forum.fonarevka.ru/showpost.php?s=9c38861c7f2ccdc2af824b264efe956d&p=127508&postcount=58
JM07 doesn’t have 2 mode sets and some had strobe and SOS and some don’t. Foy’s actually had strobe and SOS even though he checked the option for the 3 mode non-blinky one on Intl-Outdoor.
Awesome, it literally is just a 105C in there, so if I can get the retaining ring out all I have to do is connect the star that will disable those modes or replace it with the 3.04A 105C from Illumination Supply and disable the modes then, seems like it would be easy.
Love the 3 mode. Do not have a need for the sos and strobe.
I used the light Friday night because I did not have the electric trouble light. Worked great for four hours.
Thanks for rubbing it in 
I hope to get the driver out over the next day or 2 and see whats up.
Bose, I have a JM07 Pro on the way. Did you ever get an answer from one of the other threads adding more 7135 IC's to this light, or where you'd purchase them? I'm pretty sure the the driver is a 105C 7*7135. I figured I'd add the 8th one to it.
Is there a 1x26650 flashlight out there that can draw 3 - 3.5A?
Illumination Supply has the chips, they even have the higher binned 380mA ones. I personally may order a new 8x7135 380mA driver and stack a 9th chip on it to get ~3.4 A.
x2 on the E1320 modded 7135 driver.
Erik is doing some custom drivers for me now. One of which I just installed in an HD2010, and I got it dialed in. Its lowest "candle" mode is ~.15 Lumens (slightly dimmer than my Quark AA Tactical candle mode), and the highest setting at 3.5A is a real cooker... Its really cool, in that I am pushing the XML at both ends of the spectrum.
The second board we are tweeking the EPROM program "candle" mode, optimizing it for a little more light. This one however I want to be in the 5-10 Lumen ballpark.
Definitely contact E1320, hes been a real pro in our communications and collaboration. He also does stacked 7135 chips too... hence the 3.5A
Thanks Bose, I'll look into that.