Finally the XHP70.2 emerges!

Interesting, high price and sad it is a 3B instead of a 3D but interesting for sure. What is the obsession with the B and C tints? It seems to be way to hard to find the A and D tints.

nice, looks to be designed to minimize that doughnut-hole syndrome of the past XHP-70. Hope they offer it in high-CRI N/W

I think the FX30 driver (Convoy L6) can be beefed up with a more substantial coil.

Correct. I have the XHP-50 Armytek Viking Pro and you almost can’t see the donut hole. With proper focus, this should be easy to correct—much more now with the .2 versions of these powerhouses!!!

What coil? I don’t think I’ve seen one on there.

The Inductor, the square thing a ma jig!!!

Oh, I got ya. I never knew what that was. I’ve never heard of anyone ever replacing it though.

Got a XHP70.2 today - 5000K P2 3B. Has anyone else rcv'd one yet? Debating where to put it. I'd like to try it in the Convoy L6 I have the TA driver in with the SMI reflector, or would also like to try it the MT07, but don't have a custom driver in it, but do have it resistor modded.

A member sent it to me from overseas, along with a SinkPAD. I'll post some pics.

If you use it with the TA driver, be sure to use very long and very thin wires, 24AWG is the largest I would use.

You will need some extra resistance for sure.

Uhh - what am I not understanding about this new LED? Can it be over amped and fried?

Under UV:

Under UV:

The MCPCB is not a SinkPAD, slightly thinner at 1.52 mm, but the traces are wider by far.

Yep!
Got both of them yesterday…

S026860 Cree-XHP70_2-P2-1A-White-6000K-LED-Emitter-(1-pc)

S026863 Cree-XHP70_2-P2-3B-Neutral-White-5000K-LED-Emitter-(1-pc)

We don’t have a test of the 70.2 to know for sure but we can assume it is at least the same improvement as the 50.2. In which case we can figure it has a Vf of over 1V lower then the old 70.

Seeing as the old 70 could pull 12A a full 1V lower Vf could easily see these 70.2’s pulling upwards of 15-20A+ depending on the cells used. Even if that didn’t pop it you can bet it won’t be making peak lumens up there. I figure it should be around 10A for max lumens, so you want a fair amount of resistance to drop the power that much.

End point is that it running it in DD with low resistance is not a wise idea.

Ahh, ok. Cool KB1428 got some too. Hhmm, Could try it in the MT07 then - that's not DD FET, just little bump over stock.

Heres' that un-labeled MCPCB close-up. You should be able to see the traces:

Oh yeah, it needs regulation or wimpy batteries!

Well it will take just over 20 amps and live, didn’t turn blue, I don’t know for how long, I didn’t want to push it any farther!!! :smiley:

2S2P 8.37v

On 2S Laptop Sanyo REDs it pulled 6amps, 8.38v I have never seen them RED’s pull more than 8amps testing quads?

instead using thin wires it may be useful to add a resistor to limit the current

An inline resistor is not a bad shout. So quick maths: if your drawing 20A then assuming batteries are powering at 8.4v then total circuit resistance is ~0.42ohm. To get ~13A total resistance should be ~0.64ohms meaning you need to add a resistance value of ~0.22ohm.

The issue is that the resistor could need to dissipate as much as 5-10W. I don’t know of many that can do that and fit inside the flashlight body. The ones that do exist are expensive. Wire on the other hand is cheap and easy and can dissipate a fair amount of heat if it is silicone and long enough.

The best option is to use a regulated driver obviously. The stock L6 driver should be able to work as long as you don’t want more then 7-8A.

Wow! Nah, I don't believe in limits or thin wires .

Ok, here's some details. It's a TA Convoy L6 triple channel using a SIR800DP, 20 AWG wires, 20 AWG spring bypass. It's got the Simon SMO reflector.

On 2 LK 5000's at 4.17V, I got 18.0 amps on the clamp meter.

Lumens: 8,940 @start, 8,090 @30 secs. Throw at 5m: 186 kcd (862 meters)

There is no black hole, well under 1 foot to a white wall there is, but nothing further away than 1 foot. It's got the usual new LED yellow around the hot spot. Could be the 3B tint, or just the nature of the LED's with our typical reflector designs.

The thing gets hot, maybe the hottest I ever felt after 30 secs. I didn't let it cool down much before getting the throw readings, and it was getting darn uncomfortable holding it for the 30-40 secs or so.

Is this thing usable? Well for a few moments, yes. I had two EVVA unprotected 4000K cells I tried. They were at 4.05V and I got about 11A on the clamp meter, and maybe about 6,800 lumens at start.

Surprisingly, ramping seemed to be working ok, but as has been pointed out, there's not many steps in the ramping table at the high levels, so it jumps bright fairly quick at the end.

That resistor is compact it is build to be mounted on a heatsink with a screw

Just tried it outside - too much power to point around the block, so just hit top of telephone poles and tree tops, and down on the lawn. Even outdoors at 68F it's hot quick. Funny, it seems so much brighter than a 9,000 lumens flooder like the MT03. Even off the ceiling, the hot spot is extremely bright, or shining it down on grass, it's blinding.