Build Using New Host from Mountain Electronics

Here is some pictures and info about Mountain Electronics new 2x26650 host paired with the 32mm driver pushing a MT-G2!

Overall impression:
I am really impressed with everything. The quality of the host was even better then expected. The pill is HUGE!!! The reflector fits an MT-G2 perfectly the pills beefiness helps with heat while pushing it.

Would I recommend it……. 100% yes

The 32mm Dry Driver fits the pill perfectly. I went ahead and bridged the resistors with solder wick to see what it could do.

These are the tailcap reading I got

With 2x26650 King Kongs button tops
Low (0.18A), Medium (1.35A), High (3.40A), Turbo (5.00A)

With 2x Samsung 20A 18650’s
Low (0.19A), Medium (1.50A), High (3.65A), Turbo (5.50A)

This host works with the 26650 battery extension tube from CN Quality goods. I initially tried running an MT-G2 off of 3 Cells with the resistors bridged…… DON’T DO IT. It was pulling well over 7A but it only lasted about 30 seconds before half the MT-G2 died. But for those who want a 3 x 26650 host you can purchase the extension tube and put it on one of these hosts. You can see the host with the extension tube in the first picture.

Now for the pictures







Compared to a C8 Pill









Weather is crappy right now on the east coast so no night shots yet but I will post them when I get a chance to take some good ones.

One thing I was thinking of, I wonder how much current you're losing through the tailcap and driver springs? Sometimes the losses can be significant at 5A+. I would definitely copper braid or silicone wire them to see if you get a noticeable improvement.

Will do! I am going to test current at the emitter then braid the battery contact spring and the tailswitch and see what happens :wink:

Did I hear you correctly, you killed half a MT-G2. :open_mouth:

I have electrified mine with over 10 amps and it didn’t seem to mind at all, It does put out some massive heat at that current though.

I have also run 11A+, but these buck drivers seem to be able to give a very large spike when pushed too hard in buck mode. With 2S cells I think it's just about impossible to kill an MT-G2, but with 3S not bucking correctly or giving a large current spike apparently it is.

Wow that pill is ridiculous.

Yeah i literally killed half of it :_(

Nice build and report. Thanks for taking one for the team on the 3S/Dry/MT-G2. Could you check to see if there is any kind of gap between the emitter and the thermal pad? A real close macro shot may help. Also, it you have the emitter base (Assuming Notigon) well connected to the pill when the failure occurred?

Just wondering it was the Dry allowing too much voltage or a thermal connection issue.

Measuring 7 amps of current draw from 3 cells, would probably mean that the led was pushing maybe over 15-16 amps across that MT-G2. :open_mouth:
I was just beginning to think the MT-G2 was invincible. Now this, I was really expecting someone to kill one by hooking it straight to a fresh car battery or plugging it directly in the wall receptacle. :open_mouth: :bigsmile:

It does look like there is a gap and not enough solder, could this of did it. The LED is a little messy because after I killed half of it, it went in the dead diode pile.

This is the side the damage is on……

This is the opposite side that is still working……

Nice effort. Thanks for taking one for the team. Hows the beam? I have a couple of those reflectors I will one day build into a MTG-2 light and was hoping it would tighten the hot spot up compared to other reflectors that size.

I am happy with it beam wise. It isn’t as tight as the Torchlite 2x26650 which is now discontinued. The torchlight reflector is deeper compared to it. If there was a way to have the Torchlite reflector with this new host it would be perfect. IMHO the much beefier pill and the ability to perfectly fit the 32mm dry driver makes it a better host then the Torchlite. We are getting some crappy freezing rain weather right now so it’s not a good time for night shots lol I’ll post some tomorrow night most likely.

I tried to get some pictures but this is all I could do tonight

New 2x26650 Host @ 5A

These next two pictures are using the same setting and you can see the difference between the reflectors

This is the Torchlight MT-G2 @4A

I have Torchlite host, still deciding on what to put in there… do you think the new DRY driver fit in Torchlite host?

No the dry driver won’t it is a weird size pill, it is meant for a 23mm driver or something weird like that. I had to solder a 20mm contact board to the inside or the driver retainer ring and use a qlite with the mt-g2 mod. If you ever want to sell it let me know :wink: I think that host would make a thrower with a de-domed XM-L2 at 5A+ but there is no sense in ripping apart the MT-G2 since it is running just fine.


Thanks for the pictures. The spill is definitely larger on this light but the hotspot appears about the same size or is the picture deceiving?

The bottom of the reflector looks pretty wide. Did you have any trouble with clearance between the bottom of the reflector and the wiring soldered to the LED board?

Hotspot is definitely bigger it was hard to get a picture of last night but you can see from the picture the flood is definitely different.

I had absolutely no issues with the reflector hitting, I did make sure that my solder joints weren’t huge though. If anything it hits the screws used to hold the board down. I also use one of the 3m gaskets from mountain instead of the paper sticker that is supplied.

I was also concerned about the solder joints hitting. If you get them pretty flat it isn't an issue (but should be insulated) because the reflector does seem to hit the mounting screws before hitting the joints. As another benefit it seems to help protect the dome of the MT-G2 which can be easily damaged by a reflector tightening onto it (again, don't ask me how I know )

sorry… I was trying to buy more of this host… and regret I didn’t buy more :frowning:
but the new 26650 host from Mountain electronic looks similar enough :slight_smile:

it’s a beautiful host and plenty heat sink, the only issue I have with this light is the pill are for LED is too deep.
the LED couldn’t get close enough to the reflector, heck the reflector didn’t even touch the MCPB.
I was dry testing it by putting the noctigon MCPB on top of 2 copper pennies to make it a perfect fit.
how did you put yours?