Oh man, did i understand you right - in case of SST20/4000 only 740lumens in turbo by power SONY VC6??
It is very strange, in theory we even on 3A should receive around 700lm if flux bin is like J5 (not so good bin).
On turbo and imr18650-35e i have measured about 4.2A drain, that mean we should have significantly more lumens in turbo.
If we have only 740 lumen, that mean we have worsest flux bin like J2.
Temporary 18350 option - Remove the inner spring.
The inner spring is super stiff, and the outer spring is pretty normal. We’re not drawing enough current to need two springs.
However, if you remove the inner spring, the 18650 fit is a little weak, and a moderate bump will turn off the light. Even with the double spring a stiff smack will turn the light off…
What I’m doing is when I use an 18650, I put a 1.5x5mm round magnet against the battery, giving the 18650 a bit of extra length.
Until proper length tubes become available, this is my solution. If 18350 tubes aren’t free for us, I’ll probably just keep using this option, although it does add a couple extra grams to this already absurdly heavy flashlight.
@dcavni I also had a broken glass issue and looked a ton for repacements. The stock glass is a SUPER tight fit. I considered buying a watch glass off ebay link, but went for this AR lens from fasttech instead.
If you’re buying from ebay, dropping to 19.5 might be a good call, if there’s any error whatsoever, the 19.7 might not fit. The fasttech one is significantly smaller possibly to the point of trouble, but I figured it’d be worth a shot.
Patiently waiting and still putting faith for the release of green version.
If it happens i will get 3 
I should mention, that at all this flashlight is very nice so. I like it very much because of strong magnet and fine button. Because of reflect optic there are thrower ability, and with XP-L this light enought floody to use it in some close combat cases.
Heavy weight and size promote it to have, as i measured, enought work time even on ceiling level (2.4A) without termo stepdawn for a long time (of course, if you calibrate temperature and set at least 30+20 degrees level of temperature protection).
Even in 18350 variant it could work without stepdawns on 5th level, and even on 6th level on street in early spring conditions, the battery drawns faster )))
In comparison XP-L/4000 and SST20/4000 variants, SST20 is much more thrower, and so is less useful, as my thought. Moreover, a large question, if hicri useful for such optic. But color tint is very nice, no any greenish attempts. I even could not choise, which of them i will left for myself.
I am sure, that for 25$ at start it was very nice deal.
Unlike most lights who's output starts to degrade from the moment their turned on my XP-L 5000K model took a while to reach its max output. Output on my XP-L light increased significantly afte 30 sec. and I'm guessing this may be why your measurements don't match those of others tests. My SST20 version did this also but to a lesser extent. For reference my crude bounce tests showed about 1500 lumens for the XP-L and 750 lumens for the SST20.
Additional news )
I have forgot it in my pants and HL01 in 18350 variant take full cycle in washing machine
So. It’s work and no any traces of water inside. USB-C cover in this flashlight is brilliant.
Well done, Astrolux
Any word on the replacement 18350 tube that will actually fit the battery in it?
I received mine about 3 weeks ago and it worked well with Keeppower Golisi Vapcell 1100ma 18350.
Also Liitokala 900ma but they measured all over the place from 666 to 915ma. Height of tube 3.64cm but tool very cheap so don’t know how accurate it is.
EDIT: Liitokala actually call them 1500ma ha ha.
And Keeppower is called 1200ma
I’m really enjoying my HL01 in stonewash with SST-20 4000k.
This is my first SST-20 4000k and while I’ll always go back to my Cree lights to blast stuff it provides a good all round light for around the house and occasional outdoor use.
The design+chip offers a decent throw I can check on my sheep in the paddock from the back deck(porch) and spot critters around the yard (still missing the cree ‘blast’ but it gets by).
The High CRI is pleasant, the tint has no noticeable green or shift. Indoors it doesn’t bother others, I can check on sleeping kids and animals without disturbance.
I’ve been running the full size tube, it feels good in the hand.
The thermals are great! No overheating issues whatsoever.
Great magnet, very strong, though sometimes sticks to stuff you don’t want it to.
Anduril and the aux lights all work really well, yeah the blue is a bit restrictive but it does low, high, flash, off etc and is great for keeping track of the light outdoors.
I often switch between lockout and unlocked for indoors and outdoors. The click and double click momentary comes out of the box with a great levels, one for moonlight-ish and one that’s quite usable without unlocking the light.
Pleasantly surprised at this light, thanks to all for the design input!
Any update on those replacement tubes that are the correct length?
Checking in again since it’s been a few months to see if there has been any movement on those replacement 18350 tubes since the factory ones were made too short, M4DM4X?
Hi All,
Basically I have the same question as above. Or maybe a third party replacement for purchase?
Hey, can you provide an update???
i need to find out
Yeah, this is ridiculous. I ordered a shortest 18350 batt. (35.00mm) I could find and it still got dented and the tension was too much on the spring. Short tube would really help on this light due to its weight when used as the head lamp. Please make this short tube fix.
Really trying to get one of these. But login keeps failing. I have the code. Whats up?
interested
Ok, so it’s been a year now. M4DM4X is there any chance they will actually be fixing the problem for us and shipping out correct length 18350 tubes, or are we all just SOL?
I guess we just got hung out to dry. Sad to see.