That is XPL-HI vs XHP50.2, the 50.2 and all the new cree emitters have tint shift, likely due to how the phosphor layer is applied.
What’s with the 2 - 3 threads on the head-end of the battery tube? Shouldn’t there be more?
For those of us who want more throw, we may need an XHP35 mod.
I wonder if an XHP50 with a larger head than the C8 will give it more throw.
Might be wrong but from what ive seen on blf, if you want more throw dedome a xpg2.
Most seem to get less throw with a xhp35.
You get more lumens but less throw.
But i wouldnt say no to a xhp35 c8.
XHP 35 with single 18650 is not good idea. Boost driver from 3,6V to 12V is expensive, low efficient, bulky, low runtime etc.
That is why at the moment best achievement with good battery is around 1600 - 1400 lumens and that for short period of time.
Armytek and zebralight uses that in alot of lights.
The KD boostdriver is at 89% unmodified.
Still waiting for a review.
This
KDLITKER C8.2 Cree XHP50.2 White 6000 – 3000K depending on LED, 2600 Lumens
sounds very interesting.
Any info about step down timer in high (2600 lumens) mode?
AFAIK it uses the H1-A driver
http://www.kaidomain.com/p/S026606.H1-A-20mm-3A-1-cell-5-Mode-Boost-Driver-Circuit-Board-for-Cree-XHP50-6V-MT-G2-MK-R2
which has no step down timer
Thanks for the sharing Jensen. Well for me it’s too much hassle to do all these as I don’t have the necessary tools, skill and also being lazy. I would just modify one of my cheap existing hosts which has 20mm driver opening, or just off to buy the KD C8.2 lol.
Confirmed - I tried up to 5 minutes, when body got really hot at high mode. No step down observed. I like this type of hotspots - not that far reaching, but really illuminating wide at ~ 100 m. You can’t use the light for extended time at high though - it really gets hot fast. Head gets warm 2minutes, hot, but touchable 3 min, body hot @ 4 min., then 5 you can't hold it - this is 25 degrees Celsius in a room. Besides that, the quality of the host is OK, matte black and smooth, glass and reflector are very smooth, I could’t see AR coating. Overall happy with the light, cannot supply data for currents or lumens.
This C8.2 looks like affordable alternative to Nitecore TM03.
Hi, I have the following question: I have 2 convoy c8 clear new version with xpl-hi u63a, one mine and one that gives a friend, measure torch with luxometer at 6.5 meters with batteries panasonic ncr-b 3400 mah and stock produces 60000cd, Is a reasonable value? Next, the mine was modified with BLF controller A6, by pass cables springs 22 awg and with battery sanyo ga, produces 81000 cd, is also a reasonable value? Last modified my friend’s flashlight, stacking 4 amc 7135 in source controller of 8 amc, produces in the tail 4.15 amps (logical) and 76500 cd, what is the limitation the type of led? Or flashlight being rendered low? Sorry for the long, greetings !!
You may be able to increase the lux by fine-tuning the reflector position. If I recall correctly, the reflector on that one should be slightly lower than it normally is, to put the LED slightly higher.
You could also increase lux by using a de-domed XP-G2 instead of XP-L HI. I hear this can increase lux to 140k cd if done well.
It may also help to increase the pressure holding the MCPCB to the pill, for better thermal transfer.
However, 60k to 80k cd isn’t bad for XP-L HI.
Hello, ToyKeeper, thanks for your prompt reply, being you the creator of this firmware, what I wanted to know is if the values for this configuration were correct, for your answer I think if, for now I will keep this mod, at least in the Flashlight of my friend, yesterday I came from INTL a new xpg2 based on 20 mm ……… maybe mine ……. greetings !!!
I don’t really do much lux optimization though. You could get better answers from someone else. 
It sounds like you did a fine mod. :+1:
From what you’ve said I think your biggest performance hit is the emitter. Specifically the U-binned XPL-HI U-binned emitters. The tint is nice but you can increase the power running through them all day long and see little gain. I had an L2 with the same emitter. With a similar upgrade as you’ve described, speaking just from an output factor I didn’t see more than 1100 lumens even at around 5.5A if I remember correctly.
The eye-opener was a simple emitter swap to a higher binned emmiter. With no other change we gained 400 or so lumens…
Hi, J-Dub74, thanks for your appreciation, both you and ToyKeeper, are referent, I feel calm with the mod then, it is true what it says regarding the led, in DD with blf a6 pushes the tail by over 5 amps, And the gain is not so significant, by the way the dye is very nice, greetings and thanks for commenting.
Hi everyone!
Does anyone have “hack” method to chance 19mm driver hole to normal 17mm driver hole? I found one host and it is just great otherwise than that 19mm driver hole. Same kind of head like Convoy C8 “integrated”. And it is also with retaining ring holding driver in place. I have keep pushing manufacturer to chance that driver hole size but no luck with that yet. Maybe all C8 lovers should ask them to chance their C8 to 17mm driver so maybe they would do something about it? It surely looks very much the same with Convoy C8 and that C8S version with U-shaped tailcap really is great looking C8 for my eyes anyway I’m really not into XHP-50/ 35 but XP-High Intensity and driver in 17mm size is much easier to find.
Alot of people want to move to 20mm drivers to be able to use more advanced boost drivers.
But a thin metal ring could probably work as an adapter.