Finally the XHP70.2 emerges!

I reflowed it myself, and re-did it for the second set of measurements, I believe I did it well, there was enough solder and not a huge excess, and earlier tests did not find a measurable effect of thicker/thinner layers of solder between led and PCB.

Measuring MCPCB temperature would be a very nice addition to my test set-up, but it would add to the work-load of doing emitter tests. In practice that will lead to less emitter tests because I’m limited in hobby time and also the extra work will raise my treshold for doing tests, which is already higher than when I started doing them :wink:

Djozz, you are measuring the current at the led? Right?
The others at the tailcap before a driver?
Maybe that can explain something.
With these high currents weird things can happen.

It is the same current here or there, you would somehow notice a 5A current leak between battery and led, right?

But I will order another led eventually and do another test with an undisputable good mounting.

The best dog walking light will vary by person but there are a lot of options. At the top of my list would be an L6 / S70s if you want something you can knock someone over the head with if needed. The Q8 is also a great option for this.

In smaller packages an X6 or X7 triple makes for a great overall light with some good output.

Just updated my MT07 with a XHP70.2 (same P2 3B), but from KD. I did make resistor mods, but had somewhat disappointing results with updated to a XHP70 P2 1C - now I'm not even sure it is what I thought it was....

Anyways, the results:

7,480 lumens @start, 7,280 lumens @30 secs, 198 kcd at 5m (890 meters)

Before on the XHP70 I got:

5,710 lumens @start, 5,250 lumens @30 secs, 140 kcd at 5m (748 meters)

Significant gains. The boost in throw is very encouraging. The MT07 has an OP, but it's a big head for sure at 86 mm, and 72.5 mm I.D. Sorry, didn't measure amps.

with a 2000lm gain and 60.000cd I wouldn’t be disappointed :money_mouth_face:

I’m a bit lost in all that led’s :blush:

Can I put this 70.2 in Convoy L6 without modification?
Or if not what should I mod?

Yes you can!

If your using the stock driver this 70.2 would fit just fine.

If your using a FET driver, then it may pull excessive amps.

Thank you so much! :smiley:

I’m using driver from Kaidomain, but it’s almost the same as original, only different firmware.
http://www.kaidomain.com/p/S025253.CF-FX-30-30mm-5_5V-9V-5-Mode-Driver-Circuit-Board-with-Electronic-Switch-for-Cree-XM-L-XHP50-XHP70-MTG2
Also did resistor mod, added R100 resistor.

Got to order 70.2 then :slight_smile:
It should be great in L6 with SMO reflector I have :slight_smile:

Did you get the driver that has the 3 modes plus standby?

can you dedome it too?

I don’t know about removing the dome, but you can easily slice it off.

Digikey has the XHP70.2 in stock now.

Has anyone sliced the dome off one of these yet?

I’m curious if the color gets warmer, how much output you lose and if it still has the yellow corona.

So far everyone that’s shaved the dome on one of these ‘new phosphor’ emitters has gotten reduced intensity and lumen output.
I think ONE person managed to dedome one? Can’t remember for sure.

Yes, same as you got.

Fasttech has the XHP70.2 P2 1A in stock too for $13.16
https://www.fasttech.com/products/1609/10036285/7908500-cree-xhp70-2-p2-1a-4292lm-6000k-led-emitter

I’ll wait for the 3A tint though.

How hard are they to reflow? Would the P2 bin 1A be big improvement to a stock Acebeam K60?

Member MEM was able to truly dedome the xpg3 and other new emitters. But it was his trade secret and he’s been absent from here for 8-9 months.