Since they only offer SST-40's and XHP50.2 3V's, yes, the tint offering is limited.
Can't measure the PCB diameter right now.
I'd say the chance of fitting in 21700's is slim to none. I just don't think the diameter of the battery tube could handle it, regardless of the milling work. A triple 21700 might be as wide as a quad 18650 setup. Also not sure the batt+ ring on the driver could fit 21700's either, assuming you get button top 21700's or mod them yourself. Also there would be problems with the length. Haven't check the dims to be sure of this - will do when I get a chance.
The HK04 was a struggle to get out the switch, scratched the light shown above. Plan was to sand out the scratch by making the flat surface bare - might come out look'n good that way, not sure. The HK04 sure is a better look'n light with the SS bezel and style. Extra size is a + thermally, - for carry.
PhotoBucket had a recent upgrade and totally screwed up my pics - counts are wrong, pics dropped, pics duped, etc... I restored the HK04 album but uploading is very, very slow.
HaikeLite HK04
Product weight: 370 g.
Size: 14.00 x 5.60 x 5.60 cm / 5.51 x 2.2 x 2.2 inches
Emitter CREE XHP50.2, Flux: 15000LM, Range 750m
Emitter Luminus-sst40, Flux: 9000LM, Range 850m
Emitter CREE XP-LH, Flux: 5000LM, Range 950m
There is very little information on this flashlight, I did not find a detailed review with an examination of the operating modes and operating time.
Interested in the CREE XHP50.2 model.
Tell me what is the maximum operating mode of the flashlight in which it will not turn off from overheating and how long this mode lasts.
As far as I understand, the flashlight is similar to Sofirn Q8 Pro (4x18650) only on three batteries.
You can ask to compare HaikeLite HK04 CREE XHP50.2 and Sofirn Q8 Pro XHP50.2
How are things going with the heatsink, is there stabilization, in what parameters is HK04 (weight 370 g + 3x18650) better than Q8 Pro (400 g + 4x18650).
Is there a noticeable difference between (6500K) and (5000K).
Should you buy the HaikeLite HK04 CREE XHP50.2 or is it better to buy the Sofirn Q8 Pro (the cost is almost the same).
Both are good quality lights, depends on individual choice. Any light of this size with 4 XHP50.2 3v's will be hot in seconds, not minutes. On turbo, expect a quick drop from temp regulation - it's too much power. Maybe if the light was 4-5 times bigger with tons of surface area to assist cooling, maybe then it would last a couple minutes. Obviously the solution is to run it at a lower setting, then it can run a while and both lights do a good job of regulating from Anduril or Anduril 2.
5000K is not available, hasn't been for a long time now, 1 year or more, so nothing to compare.
. If you can’t take picture of them can you measure body dimensions of Haikelite HK04.
Hoping to get it back up and running soon.