OSRAM CSLNM1.TG & CULNM1.TG 1mm², CSLPM1.TG & CULPM1.TG 2mm²

Got it, regulated, MOVING ON before we alert Barkuti

And then you eliminate all the benefits of low Vf LEDs.
You’ll only have full output on a freshly charged cell.

Agree, not the best solution but it works, just like any other FET based driver we have in all the popular lights as of late (Emisar, Fireflies, Sofirn. etc.). On all of them you get the max on full cells, then slowly drops - sorry, but it's our only/best solution for a reasonable cost.

I believe led4power’s driver uses a FET in its linear region. The driver must be constantly sensing how much current is passing, and adjusting the FET accordingly.

I am far from an electronics expert though.

I guess…
The LD25 driver is FET CC though, and not expensive.
Will need some extra cooling above 3 Amperes, but can be boosted with slapping on R030 (for 4 Amperes) or R020 (for 4.5 Amperes) on top of the R010.
But with high Vf LEDs on a single cell you might as well use a DD driver.

But with low Vf LEDs on a CC driver you can also optimize the electrical path (spring bypasses and thick LED wires) and have full regulated output for a long time of the battery charge.
With the White Flat 1mm² you can keep the max current on 4 or 4.5 Amperes (diminishing effect when going above that) and keep the Vf rather low in order to be able to have full output for even longer.

Nor am i, but you’re right. :slight_smile:

Adding 4x 7135 to just about any driver you can salvage from a junk pile?

i saw some reports (djozz), that 7135 amc are killing this led, is this true or is it even possible in some way? Maybe somebody can explain, cause I am really interested about this.

False info. I have 2 lights with AMC drivers with this led and no problem.

I have a 7135x12 in a Jaxman Z1. It doesn’t get a ton of use but it has always worked fine.

I believe you are referring to this comment but even djozz says he doesn’t know why his 7135 died (note the 7135 died too, NOT the LED)

edit:

Note that it was also a 2mm2 white flat with a FET+1 driver so quite a bit different scenario

The thing is with specific regulated/linear drivers, they are fixed size. Right now I can do about any size in a FET+1, from 15 mm all the way up to SRK size, and lots in between combined with filing down, etc., plus I can configure them for power or e-switch lights.

Sort of related, looking for a decent host for these LED's, I do have a couple Cometa's and one B158. I did find FT has the B158 in stock at $29 with the BLF code, but I'd prefer a B158B and it seems no longer available at GB. I only have one B158, wish I got the B158B's when they were there. Now, Brinyte is under new ownership or something, or sold the B158 line - looks like they gave up on the B158. I messages with a rep a few weeks ago - the Brinyte that is now is not the old Brinyte, so not looking good for the B158's - what a shame... I think/believe the B158 is still bout the best throw for it's size around.

Of course there are many other lights/hosts that would do.

Oops, here for $26: https://www.aliexpress.com/item/Brinyte-B158, and here w/red for $25: https://www.aliexpress.com/item/Brinyte-B158.

Worth to mention that B158 beats all commercial available 50mm aspherical flashlights when it comes to throw… All that with super cheap 2$ acrylic lenses.

When I was telling that to certain Copyfire factory they just ignored me… They stick to their production and lenses vendors and that’s it.

Also worth to mention that B158 lens will give less die projection than other 50mm aspherical lights.

How much you can expect with White Flat? Mine cheap Uni-t Light meter says 420kcd! Yes with FET DD setup( I am obviously brainwashed hehe :slight_smile: )

If you find one please let me know

I searched for it less than 2 months ago and it appeared gone everywhere.

So here’s my 2 cents.

I Built a C8+ (stock AR lens) with white flat CSLNM1.TG on Noctigon xp and LD-4 driver. After doing measurements hand-held at 5 meters I decided to get out my tripod for more accuracy in measuring lux at different currents.

Keep in mind that the led is very close to center but not exact with stock xp centering ring not yet focused.

So here are my numbers:

At 4.50 amps - 160,500 cd - 801 m
4.75 amps - 163,700 cd - 809 m
5.00 amps - 167,500 cd - 818 m
5.25 amps - 168,575 cd - 821 m
5.50 amps - 169,750 cd - 824 m
5.75 amps - 166,250 cd - 815 m

Measurements done with 1330 lux meter corrected to .93 to match known lights.

For some reason I can’t get the driver to do 6 amps but as you can see with my setup the output peaks at 5.5 amps and starts to fall after that. Normally I’m a numbers guy but it doesn’t make any sense to drive this led harder than 5 amps. I’m inclined to run it even softer at 4.5 just to give it better battery life and generate less heat. The loss in candelas is a negligible trade off.

As noted before the led doesn’t like to self center on an xp MPCB so that is a challenge. I look forward to trying on a 3030 board. The stock xp centering ring is also sloppy because the hole is larger than the led. It takes time and effort to get this one even close to center. As you can imagine I’m not crazy about sanding the ring to achieve better focus.

Pros:

Very low Vf. Longer runtime at top output.
Higher candela than dedomed xp-g2 without the hassle of dedoming and tint shift.
Throws further than any single cell C8 I’ve seen to date.

Cons:

A little too white for my taste.
Needs a custom centering ring.

As a comparison, the same light with XPL-HI V3 3A direct driven at 5 amps gives me 650 meters throw. A 2S dedomed XP-G2 driven at 5.1 amps shows just under 800 meters.

Are those numbers tail reading or what you have set in the LD-4 driver firmware?

Tail reading with a uni-t clamp meter. I’m reading .25 amps below what the driver is set at.

Possible solution for using a bigger reflector insulation gasket/centering ring with a smaller emitter: glue it using a slow curing glue. I've been succesful using Zhanlida B-6000 transparent glue to attach XM/XHP50 centering rings over 3535 emitters, for example.

Did you say the tint of these Osram emitters is angry blue?

Cheers ^:)

Those are some sweet numbers, mine does only 120kCd @ 4.5A (LD-B4 + MOSLED 3030 MCPCB).
I’ll have to try a 3D printed centering ring to see if I can focus the LED better

Those numbers are at turn on, right?
There’s no way you’re getting peak performance at 5.5A after several minutes of runtime.