it was wrong release this light without the 10440 tube support from start.
Boy, 24 pages on this teeny, tiny thing that was originally really cool with it’s lonely but unappreciated 10180 self! It should have just debuted with only the 10440 tube WITHOUT the 10180 but I doubt it would have attracted this much attention as it was so cute with the 10180 that threw so far!
Anyway, continue on with the discussion about 10440 tubes. 
Decided to swap the aluminium Nano in my order for a Brass Nano. Still have the 10440 tube with this so I can test it and I’ll pick up an aluminium version once they have made a batch with the 2mm copper MCPCB.
While discussing this with Lumintop Lighting they mentioned that there is a plan to have brass and copper 10440 tubes made as well, although they didn’t have a timescale for when they would be available. They said they would be available to purchase separately online like the aluminium versions.
I agree, although I do think the unique factor was the use of the 10180 and that is definitely what has made it such a success, the absurdity of such a small but powerful flashlight. However to make it an actual somewhat useful item it needed the 10440 from the start, it’s just that bit too expensive to buy for the novelty in my opinion; the 10440 tube included at least offers real world value. I’m glad they do seem to have heard this and are now making them. It’s also good they are actually testing it to make sure of the risks to burning out the emitter, I imagine it would’ve been easy to just release them and cash in on all the interest. I hope with the new batch of aluminium lights with 2mm MCPCB’s they will just include the 10440 tube, then it will be a complete product in my eyes.
I think I have gotten slightly obsessed with waiting for the 10440 tube for such a small light though, I’m starting to wonder how much use it will actually see when I get it! :laughing:
I found 3 old AAA light bases that fit the Nano:
Got a choice of alum, titanium, and copper.
I was wrong about the RED switch LED's - they are there, very hard to see, but there. There's actually 2 and you have to catch then at just the right angle. Was able to catch one of them in a pic:
Well heck, you are right, can not even see it with my eyes, but my phone camera picks it up 
I measured standby current at 21 micro-amps, so a bit of that (1microamp?) is actually used to light up that led 
Following up on Agro’s post #446: I have both one of the first nano’s, presumably with an aluminum board, and one modded by Vinh with a copper board and a 219b 4000K LED. Yesterday I tried them with a Nitefox body and some LiFePO4 10440 batteries from Soshine that charge to 3.2V. In each case, when turned on at highest setting, they maintained that setting for 8-10 seconds, then flashed three times and stepped down to a lower setting. This is the same behavior that I get with the original body and 10180 battery, and the same initial brightness. It might be a decent alternative to a 3.7 V 10440 battery if you’re worried about frying your light.
The tubes are sold out. 
I assume it is the low voltage protection set for li-ions kicking in, and that could imply that you can not use part of the energy of a LiFePo battery because the flashlight shuts down halfway the discharge.
It’s back on deal on Vipon $27.97
Good day friends, how can I see if it is an aluminum or copper MCPCB? And how can I open the GT Nano?
[img]https://i.imgur.com/9nnuJQf.jpg[/img]
My recently bought US Amazon Nano:
Head opened easily, by hand. Was hard to see the copper looking straight down, so I de-soldered for a better look. Good idea anyway to check the mount and replace the thermal grease.
Poor reflow, led not flat on the board, you can even look under the central pad, makes you wonder if it has enough solder. Redo it just because?
This was mine (I swapped in the sliced SST-20), it looks like it is seated better but on one side you can look under the central pad just like yours with no solder in sight. Makes you wonder if that is why people report purple running leds with the Nano.
Probably should have reflowed it. They never sand the MCPCB smooth like I do and better to know it's got a quality grease like MX4
Received my brass nano with the aluminium 10440 tube from lumintop lighting. Customer service was really good when asking questions about the product and they were quick to switch my original order from an aluminium nano to a brass nano after learning about the 2mm mcpcbs in the newer lights.
Will pick up a brass 10440 tube when they are available along with an aluminium nano when a batch with 2mm pcbs is made, but for now have a bit of a frankenlight.
Even with all the reviews/videos I’ve seen, its pretty shocking seeing so much light coming from something so small!
Cool. Thanks for the update. Looks like a hoot!!
xylnas, congrats on your Nano, and thanks for posting pics
FWIW
It is a common misconception to think that Brass has better heat conductivity than Aluminium. In reality Brass is Worse than Aluminium for heat conductivity.
The alloy brass only has about ½ the thermal conductivity compared to aluminum
imo, the reason some of the Nanos have a problem overheating the LED is because the reflow has an airgap under it, (and I think some people try to use Turbo, too much, by firing it over and over, which overheats the light)
I edited Toms photo to add arrow and text, also see post 727.
imo, the solution is to redo the reflow, properly.
They seem to have come back into stock today showing 36 available.
Thanks!
Interesting, I have always just assumed that due to the copper content that brass would be a better thermal conductor. Will have to take it into consideration in the future, although I am assuming that due to the air gap between the pcb and the body of the light (rather than some form of heatsink) that this will have a relatively small impact on actual useful heat dissipation in relation to running of a torch?
I received the 10440 tube today from lumintoplighting.com. My Nano is complete now:
1) it has a led and a beam that I like and find more useful than the stock led, but at the cost of throw. See What did you mod today? - #9801 by djozz
2) the 10440 (Vapcell) gets me way more runtime and 60% more output (390lm at start and 320lm at 30 seconds) than the silly stock 10180 (210 lm at 5 seconds). The low battery warning+stepdown after 10 seconds on a full battery 
that I got with the 10180 has stopped too now.
Edit: measured throw with Vapcell 10440 at 30 seconds: 11.3 kcd, which is a bit more than 7kcd that I measured with the 10180 cell, but nowhere near the 21kcd that the stock led produced. Nice tint comes at a price…
3) it looks sóóó much better with a real battery tube.
will the nano copper get battery tube also ?
for a second i thought why is the nano so big in that picture? didnt realized it was the bigger brother lol…
Amazing photo djozz.