I’m still waiting for my order from led4power. Hoping it’ll get here soon to see what the hype’s about. LOL
I just came from outside. Had a bit of fun :innocent: 
Cool pic! :sunglasses:
Ordered a triple and a quad 4040 mcpcb with luxeon v 4000k.
Triple went into a S2+ and quad in the D4. This emitter made them flood monsters! The triple pulls 17A with a vtc5a!
It really puts every other triple and quad into shame in terms of total output to tint ratio, doesn’t it?
What I noticed though is that to some people triple dedomed xp-g2 is more impressive due to a lot more throw and still quite a lot of spill that spreads near your toes although it greatly depends on area where you are using lights.
Yeah, I got a M2 quad with these. Love the tint, but flood monster it is!
My most used Luxeon V is starting to show signs of the abuse it has been through, there is a dead spot in the center of the emitter.
It has been in many different hosts before ending up in a Sofirn C8 and used extensively as my “walking the dog” flashlight. It has always been used with high drain batteries and FET drivers.
High drain cells and DD drivers are not good combination for low Vf LEDs like Luxeon V and many new Nichias,Crees... But it's nice too see that it can survive for quite a bit of time under way over spec conditions, most other LEDs just turn blue and die.
The Luxeon V is one tough emitter, it’s still working after all the abuse and after I sliced the dome the dark spot is less visible. I did put a new Luxeon V in the Sofirn but this time I used a LD-B4 6 Amp driver instead.
As long as you use a host with good thermal path it’s hard to get the Luxeon V to turn blue, I have only managed to do it in a Skilhunt H02 with a FET driver.
I have a LD driver with luxeon configured it in DD mode on turbo. on fresh battery it never takes more than 8A.
In the Sofirn C8 I just put together with a LD-B4 using 22AWG wires from the driver to the LED and a high current spring without bypass I get 5.64A on CC and 9.36A on DD with a Sony VTC5A.
Will it be okay to push 7A regulated current with this LED? How will it hold up in the long run with regular turbo runs? External OTP will be done with L4P driver and MCPCB.
7A should be fine although my sweetspot would be 6.
No one knows what happens in the long run until reports are coming in that Luxeon V’s are failing. At least my tests do not tell what happens when leds are overdriven longterm.
Thanks djozz
Pretty much all my Luxeon V lights have lost amps and output - thought this was known well? I'm gonna convert what remains over to something else.
How dramatic are the losses? Could you talk about how you ran them? Were they DD’d, etc.?
Oh boy, @work now, but again, thought this was common knowledge. Initially in a SD Mini w/FET+1, the V did 8.5A on a GA cell at 4.16V, ~2200 lumens at start, 2000 at 30 secs. Now I think it's down to ~1500 lumens, not sure of amps. Think it's in my notebook somewhere but I don't have a cross ref to find it easy.... No time now to research.
Again, though everyone knew this? Anyone knows of it? Am I crazy?? 
I don’t think driving this LED with FET is a good idea. I lost half of my output (physically two of the 4 four emitting surfaces stopped working) using a LD-A4 driver. I had high mode set to direct drive and it was a huge mistake. Had to replace the LED. Currently, I’m running high mode constant current at 5.25A.
It’s been months of heavy use and lots of turbo runs and it’s still as it was since I tested it after the new LED was installed.
Ahh, ok - that helps somewhat. Soooo, I take it running/testing at 8-10 amps wasn't good? Didn't know there were 4 separate emitting surfaces - need to take a closer look at mine.
I hadn't heard of it. My D4 is using Luxeon V and still doing quite well AFAIK. Of course, that's a bit different than direct driving a single emitter. I should do a test with the bezel open and measure the voltage across the LEDs, since I don't have any good way to measure current (especially current that high).