You can install in both direction. There is a reason for that.
Just noticed that my TFL account got banned for "spam reason"... but i didn't even make a single post in there. L
L! All I want is to read their MF-01 discussion.
Which is?
2 heads are better than 1? 
Still in design process... Will announce at appropriate time.
Maybe a special end cap with built in charging?
Or usb outputs to make it like a power bank?
Maybe a smaller head with special purpose like a red, blue, green or UV LED?
What about a lantern add-on so you can use the 18x head as a base and have the lantern part be on top. Then you can still pick up the “lantern” and use the high powered end if you need to?
Am I warm?
for a lamp with 8 batteries
2 carriers are pretty bulky, but that would give you 16.8 volts. Good for a xhp35 like the GT which uses 8 batteries.
Maybe they are working on an even bigger light like the Imalent DX80. 8 batteries for 30k lumen? Sounds good.
Pill: https://www.fasttech.com/products/1616/10002023/1576103-5mm-2mm-brass-pillars-for-electronics-diy-2-pack
… but it was already explained to you.
Yes of cause, I would never try to use such batteries in similar flashlights.
Yes Thats what I wanted to say.
My Nichia Flashlight arrived some minutes ago. There are no issues with the battery-carryer. I checked resistance between the contacts and tried to disasseble it without a tool.
I think Mateminco/Astrolux is the perfect candidate for a monster 8x18650 light.
Yes, if one is hot, you can use the other. 
they might be thinking of building a lego light? that would be cool.
Just noticed that the LED stopped breathing.
It just takes a while - maybe 1 hour or so.
Something more interesting than installing MF-01 head on the one side and MF-02 head on the other ? :innocent:
Airport beacon backup?
Received mine today. I got the 219c version and it is awesome. I’m using button top LG HG2. I’ve noticed better performance with the HG2s vs the Samsung 25r cells in my meteors. When comparing the tests they seem almost the exact same performace of the samsung 30q cells. I have 12 of those on order so I’ll have to check them out too later. The battery carrier in this light feels more solid than any other that i’ve seen including those of my firefox lights and supbeam or even the thrunite light carriers. The weight in the hand seems balanced like a dumbbell with heavier weight on the ends. It’s output is astonishing. I have a couple of M43 meteors that I compared it two. Both of the M43s are also 219c. The MF-01 has a much brighter hotspot and seems to overpower the meteors in every way. I’ve noticed the 219c astrolux lights I have seem to use a slightly cooler tint than the M43s. It is a very white tint very similar to sunlight.
This light easily worth the full retail price. When you consider what something like this put together in a custom build would cost in parts alone the GB and sale price on this is a complete steal. It’s not all the time you get a light that satisfies the itch till the next ones come in the mail- Q8s and BLF GT in my case. But this is certainly one of those lights I would highly recommend. Also, if you do not have any 219c lights this would be a good one to get with that emitter cause you get 18 of them in one shot. I have the Astrolux S42 in the xpg2 CW and the 219c NW. I thought I had lost the xpg2 but didn’t really care since i thought the 219c version was that much better.
I got the MF01 yesterday, 3 Q8's today, but my MF01 is the XP-G3 version. Overall totally agree - it's a steal, output actually matches the specs, overall quality is outstanding. checked all the screws/threads - nothing stripped, all at/near perfect. Amaz'n for this price.
Any word on how it steps down to about what output level, and after how many minutes?
Just got mine in the mail yesterday; here are some thoughts:
- This light is BRIGHT! A lot of people up here have lightbars on their rigs, and this puppy seems to be just as bright. Except it’s all in the palm of your hand!
- It’s much heavier than I expected. This means there’s plenty of thermal mass to soak up extended turbo runs.
- Flat tops DO fit! I’ve run both VTC6’s and 30Q’s flattops (No solder blobs) without any issue. I have not removed the white protectors and this still seems to work just fine.
- Could a custom driver push this light even harder? With 18 Nichias I see the potential for over 20,000 lumens. With the XP-G2 model it could even be 25,000 lumens! Granted that would require over 300 watts… But maybe it’s possible for like 15 or 20 seconds? Kind of like a D4 but a D18 instead. VTC6’s should be able to kick this much power out… Maybe the voltage sag would be too much though and would require some kind of boost driver though?
- F* the strobe mode
Ref:
https://budgetlightforum.com/t/-/34094
http://lygte-info.dk/review/batteries2012/Sony%20US18650VTC6%203000mAh%20(Green)%20UK.html
It’s seems crazy to say a light with 18 power leds needs a lower low but it would have been nice here. The UI isn’t anything fancy but compared to the mess of their S42, where you couldn’t turn it off without going to level 2 and if you try it goes to turbo and if you try at that point to switch modes you get strobe. Yeah, way better than that but not a big fan of the hold and wait to turn off but have been getting used to it in their lights and the Manker ones. Maybe it’s just their thing.