UF-1504, 1503, 1505 - multiple LED's tested for throw (just what you have been waiting for!!!)

Ok, so I spent a crap load of time doing this. For the driver I used an A17DD-S08 that I built to direct drive the LED’s with the exception of the red LED. I used the same pill and same driver for each LED to eliminate inconsistencies. For batteries, each test was on a freshly charged unprotected Keeppower 26650 4200mAh high drain battery. For the Lux Meter I used a LX1330B. Lux was taken at a measured 6 feet 30 seconds after turning on the flashlight. I did use two different LED’s as I dedomed all the LED’s at one time except for the extra XP-G2 to replace the damaged one.

There are some surprising results!!!

Some notes:
There is an increase in output from the red XP-E2 that is dedomed, but removing the dome is a frigging hassle on this LED. It’s harder than the others despite adding a ton more heat. I had one XP-G2 S3 that I dedomed that gave mediocre results. It would only pull 2.92A at 351 kcd. I assume I damaged it taking the dome off. I killed 2 qlite drivers and 2 red LED’s. I dunno what the hell is going on there. I ran the test on the red dedomed LED just fine. Changed the LED to a domed one and when I check current at the tail, the DMM read a really high current and pop goes the DMM fuse, LED, and driver. Being the genius I am I did it again and got the same results. That’s why I had to use the domed red LED results I took a week ago.

Here is a picture of some of the LED’s

XM-L2 U4 1C
Domed - 56800 lx at 4.70A for 190 kcd
Hot Dedomed - 130000 lx at 4.73A for 435 kcd

XM-L2 U3 1A
Domed - 51400 lx at 5.11A for 172 kcd
Hot Dedomed - 114800 lx at 5.15A for 384 kcd

XP-L V6 1A
Domed - 56500 lx at 5.87A for 189 kcd
Hot Dedomed - 107900 lx at 5.82A for 361 kcd

XP-G2 S4 2B
Domed - 74800 lx at 3.80A for 250 kcd
Hot Dedomed - 137000 lx at 3.76A for 458 kcd

XP-G2 S3 1C (the ones I sold)
Domed - 75900 lx at 4.05A for 254 kcd
Hot Dedomed - 127000 lx at 4.05A for 425 kcd

XP-E2 P4 Red (from Mouser) using 6x .380 4135 driver at 2.28A
Domed - 93 kcd (tested previously)
Hot Dedomed - 39900 lx for 133 kcd

Update:
I got dedomed the other XM-L2 U4 and XP-G2 S4. I also tested the previous XM-L2 U4 and XP-G2 S4 in the 1505 and 1503. The amp readings are from a different meter since I need a fuse in my other one and all the currents are higher. These were taken hanging from the ceiling 6 feet over the lux meter in my garage. I checked with my LX-1010B lux meter and readings were within a couple thousand lux. I used freshly charged Sony VTC5’s for the readings.

1504
New hot dedome XM-L2 U4 1C at 5.05A for 118300 lx and 396 kcd
New hot dedome XP-G2 S4 2B at 4.74A for 135100 lx and 452 kcd

1503
hot dedome XM-L2 U4 1C at 5.40A for 53000 lx for 177 kcd
hot dedome XP-G2 S4 2B at 4.32A for 54200 lx for 181 kcd

1505
hot dedome XM-L2 U4 1C at 5.28A for 42200 lx for 141 kcd
hot dedome XP-G2 S4 2B at 4.90A for 34100 lx for 114 kcd

Thanks for taking the time to do all this testing.
If you have them it would be nice to add stock setup measurements just so people would know how “bad” they are :slight_smile:
For red leds I am using gasoline dedome method and it is still a hassle because silicon stays stuck to phosphor surface,
and 7x7135 driver…

Wow, that is a ton of work! Thanks for the effort, very useful.

That XM-L2 U4 is a nice surprise! At only 4.73A it beats the U3 at 5.15A with flying colours. I hope it is not just a lucky emitter and that they all perform so well.

And I have been proven wrong here on the red XP-E2 throw: the throw does improve after dedoming.

Orsm work. I was thinking the same as djozz on the XML-2 U4.

The XM-L2 U4 has a similar percentage change after dedoming compared to the U3 and the amperage is basically the same between dome/dedome between the two U4 emitters.

Very very informative! thanks for the hard work!

I think the spread of numbers of the LED’s looks right on, however I’m wondering if your meter reads high on the lux measurements. They all seem about 15% high compared to what I would expect.

Does anyone else agree? Maybe it’s not that your meter reads high, maybe mine reads low.

I don’t know. I plan on doing a couple more tests today with the 1503 and 1505. I have another meter but it’s a cheapie. Between the two I trust the one I used more. These measurements were taken in my garage with the door closed and no other light. A tape measure was laid out on a table, the light placed on a rifle shooting bag, and I mounted the Lux Meter at 6 feet with a timer. I adjusted the light for the highest output and at 30 seconds (some later than that) I recorded the highest number. The XP-G2 S4 I actually repeated a second time after it cooled and got 136300 lux so pretty damn close to my first one. Let me know if you think I can do anything different.

Wow amazing work…thank you for you time & effort on this!

How does the tint on the de-domed U4 look?

Oh, no, I trust your efforts. The numbers just seem high compared to the measurements I get. It’s entirely likely that we’re just measuring with meters that are off a bit in opposite directions.

One thing to try just to make sure, remeasure one of the lights at 20+ feet and see if the numbers change much. With most zoomies it doesn’t make much of a difference with my meter after 15’, but I’ve had weird readings sometimes if too close.

You interested in us putting together two identical lights, measuring them, and then shipping to each other to test the differences between our meters? I think I have a spare 1504 host around here somewhere…. :bigsmile:

One other thing, is it possible you’re getting some reflections off the table?

Thanks so much for the very thorough testing’s n10sviern :slight_smile:

It confirms my initial train of thought that the xml2 U4 wouldnt be far behind the xpg2 s4 in terms of throw. As well as the relationship between lower current draw with the newer emitters and higher output, obviously pertaining to higher vf.

Since you’ve done so many hot dedomes, what sort of temperature and amperage range would you say is ideal to dedome xml’s and xpg’s?

It’s possible, but the light is about 8” above the table. Over 6 feet, it seems it would be minimal. I’m gonna try something new. I’m going to place the meter on the floor and hang the light 6’ high. It’ll be easier to adjust the meter.

I got 370 (380 at startup) at 3,8A. But my 1504 lenses are not clearest one(lot of color aberration)...

As I mentioned many times before we have emitter bin lottery (up to 15%difference) and lenses lottery(up to 20% difference among same batch of lenses)

So if got lucky 450 kcd can be done or even more...

And of course this is crazy work from N10sivern. I am very grateful for this...

Oh yes, he’s put a lot of time into the GB and testing too. I am grateful for all his efforts.

It is a emitter lottery, lens lottery and luxmeter lottery. I'm surprised that the numbers from different people are generally so close to each other :-)

Check the OP. I just updated with new data.

The 1503 was about 40% of the throw of the 1504 on both the XM-L2 and XP-G2. One was like 39.5% and the other 40.5%. Regardless, I think this consistency confirms my 1504 readings a little. As for the 1505, it didn’t like the XP-G2. I check my measurements two different times and got the same 34100 lux. Due to this, the XM-L2 U4 wins with the 1505.

Curious if you have any idea why the amps jumped so much with the second test of the XP-G2 S4 in a 1504? Or was it just an error typing it up?

Henry, read my note. I had to use a different DMM because I didn’t have any more fuses. It read higher amps on everything

D’oh, how’d I miss that! slaps forehead