I did a 20x timelapse for the thermal stepdown
Looks like a good product so far, i am torn between this and Haikelite MT03.
Nice light, it may even give the meteor a run for its money. Many details can be improved, such as having the MCPCB wire a bit further away from the edge to avoid shorting, and better application of thermal paste (Although for this size it should not matter much, the light will heat up quickly anyways).
Swi from Banggood told me this morning this is a pre production sample Banggood received from the company producing them
none of the regular lights will go in production till the improvements and changes are clear
they seem to have reacted after the S42 issues to put more efford to improve the lights handing out pre production samples for testing, rather than go too early in production and find out later which issues the lights have when the first reviews show issues
the switch ’s light is not…perfect for me, it’s kind of unbalance
Nice review!
thanks
I find thesetemps a major problem.
They did build in thermal step down but it seems to protect the hardware and not the user, this is literally burning hot, unscceptable imho for a production light, for a modded hotrod it is ok but for something one buys stock a no go.
I’m pleasantly surprised, it seems like they did the details quite right. And I’m curious about the output too, the 12.000 lumen is for XP-G3 of course, the high CRI Nichia version is not specified but will be more like 9000. I like the looks too. And the beam is nice.
Still the first thing I do with any Astrolux light is take it fully apart and check, check, check! 
Only recommended for the experts... Else risk catastrophic result... 
That’s great to hear. I’m glad they’re taking the extra steps to make sure everything is right from the start. I really like the looks of this light and will end up getting one as long as there’s no known issues.
We have identified several issues back in June. Several parts will undergo redesign, and i am awaiting for their test results.
That’s very cool to work with the manufacturer for redesign and the best for Chinese products to get feedback for improvements…
I’m amused the way Chinese people adapt their way of thinking
Anyway can’t wait for this flashlight
Groupbuy Groupbuy…
Thanks for the review Lexel. Looks like a nice light once the kinks are worked out.
Quick learners. Definitely a good sign for Astrolux/Banggood. :+1:
@Lexel
Please tell Banggood their lamps would gain a lot if they use atiny chips or tell how to flash each light.
Some Astrolux lights could be brilliant lights with the right software. They should enable the flashaholics to fix their errors easy.
2S battery config with buck driver feeding 2S emitters? 2S li-ion operative voltage window (8.x down to 5.4V in this case) overlaps with 2S emitters driving voltage, which means you lose regulation early at some point. Stupid decision imho.
Dealing with certain limitations can be understandable with cheap flashlights in the name of cost. This is not the case.
Good for ANSI lumen rating, and good for ANSI runtime rating. So yeah, I want to know what output you get at 4.2V, 3.8V and let’s say 3.5V.
P.S. It’s not just 2S emitters, but those 2S are in 9P, so you have a lot more voltage sag.
hIKARInoob, I clearly see the torch uses a 2S2P high drain battery feeding 3 buck engines, each one driving a 2S3P emitter stack. The limitation I am referring to is the same you can find on any other 2S torch driving 2S emitters (like a Convoy L6): once the battery voltage drops below Vf + driver overhead, you lose regulation. This means turbo won't fully work once the first low battery warning has appeared, or thereabouts (a 30Q loaded with 5A outputs below 3.4V once you're in the 2 to 2.8Ah of its discharge capacity curve; also bear in mind carrier and other contact losses).
To me, regulation matters. ¿2S2P battery? Go fully regulated buck with a beefier engine and 1S18P emitter stack. Also, some efficient boost engines available now: 1S4P battery feeding powerful boost engine driving 2S9P emitter stack. For examples, of course. 
^
I think we’re on the same page here. I think I fully understand the limitation you are referring to, and I’m definitely not a fan of “you only get that output with fresh 4.2V cells” either.
UI is awful.
Modes :
100, 600, 5100 ,12000.
Power consumption:
0.125W , 6.4W , 57W, 120W
LPW:
800, <100,<100, <100
First obviously is mistake. But if the other are right that is shame. Newest led and constant current driver and lpw < 100! WTF?!
To get 5100lm from 18 xpg3 s5 it needs about 30W not almost 60.
This is a prototype with Nichia 219, so who knows if they drive the XPG3 with a little less current or this is not the final driver
it is possible the light does more than 12k with XPG3, this Nichia one is really bright
Its likely they do not use highest flux bin to keep the costs low
and the TIR plus AR glasss will have like 15% loss
so your 5100 lumens need 36W @80°C Tj
driver efficiency 85%
42.4W
S3 flux bin
47.85W