My C8 fell head on, dead. Info on emitter voltage, please?

Tonight, I went up to the chicken coop to check the chickens, and once in I positioned my C8 on the metal ceiling to make light, thanks to the tail magnet; then I turned and as the ceiling is very low, about 175cm (5¾ft?), I inevitably touched it with my curved back dropping it on hard concrete.
It was in the dimmest mode: it fell, pitch black.
Back at home, I tried to swap the battery, the switch, then as it wasn’t working, I decided to go and take the multimeter in the garage, and I measured 3.8V at the MCPCB terminals, so it’s clear that the LED is shot.

But how can it be?
It’s not the first time that I dropped devices, and some got broken (compact cameras, laptop computers, etc.) but the ones that got broken had mechanical flimsy parts that were the broken part, but in a flashlight? I was expecting the glass shattered, but thanks to the stainless steel bezel that was fine. The LED is soldered in place, I really don’t know.

Anyway, I wanted to change at this point the whole MCPCB with Cree XHP50.3 HI R9050 4000k on it and put at its place a new one with a different, higher CRI emitter.
I wanted to try the Luminus SFT-40/70 in 3000k, but: SFT-40 is 5050 too, and 3V as the XHP50.3 I have, however the driver I have is 6V 4A buck (but why did I measure 3.8V?), does it mean it can host the SFT-70 also? If not, would some kind soul point me to which driver would I need to fit the SFT-70?
My batteries are LiitoKala Lii35A, so with 35A maximum drain.

I am by no mean a collector, so I only have this light and three 18650 cells: the thing, needless to say, is pretty annoying.
Going back with the phone torch was almost dangerous.

Thanks

35A is not a drain rate but a model name (Lii35A) indicating battery’s capacity - 3500mAh.

Your XHP50.3HI is probably a 6V emitter. At least Convoy didn’t offer 3V 4000K R9050 version of it. Also that emitter may have never existed, but I’m too lazy to search for Cree’s datasheets to confirm that.

It’s unlikely that your emitter got damaged. Driver is a more probable point of failure.

3.8V might be the voltage of the battery, meaning the boost converter fails to step-up the voltage. That voltage isn’t enough to light up the 6V emitter.

2 Thanks

That’s because all 3V XHP emitters are only available low CRI (Typ 68) and cool CCT (≥5000K).

2 Thanks

yes, you are right, I went to check and they are rated 10A

So with a new driver it should come back to life, right? At that point I can also change the emitter for a SFT-70, I really dislike the green tint of this. Indoors is something pretty revolting to me.

I just put a 3000k sft 70 in an old M1 that had an xpl-hi in it, what a difference! The tint and output look great to my eyes. Orange peel reflector helps too.

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It’s exactly what I want to do, too!
I remember someone on facebook on Flashlight enthusiasts posted about it, back in October or November when I hadn’t received my C8 yet, was it you?

No, it was not me. I don’t get facebook on my tv…

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:heart:
Good. Instead, I don’t do TV since unmemorable time :smiling_face:
I quit facebook not long ago, though.