12x CREE XM-L T6 LED Super Bright LED Flashlight

I just received one of these, I know this is an older post. Tested it and at startup it’s pulling 4 amps. So, that means each LED is only getting .333mA! It is bright, but, I think it could be much brighter if the LED’s were driven better.

What driver would give more power???

Thanks for the help.

I have several lights that I want to modify. Resistor mods seem the simplest. I have double of a few lights.

Paul

You mean 4A at the tailcap? That’s 48W on three cells. About 3.5W per LED factoring some driver loss. That’s closer to 1A per emitter. Not horribly driven, probably could be pushed further.
BTW, welcome to BLF!

Yes, 4A at the tailcap. I would like to get more out of this light. It’s supposed to put out 13000 lumins, I have read (not tested it yet) that it is really closer to 3000.
I have a nice Sekonic light meter that measures EV and found a conversion chart. I may see what I can measure in the next few days.

Any ideas for a different driver or can a resister mod be done on this light???

Thank you for the welcome. I hope to spend some time here. I think my future is bright!!

Paul

Welcome, and this is a respected seller:

http://www.kaidomain.com/product/details.S020991

Actually, you would be better to buy this:

http://www.kaidomain.com/product/details.S021457

It is very strongly driven, and will produce more actual lumens.

3A each LED, 90+Watts, that's some heat to handle.

That’s 13000 Chinese Lumens, which has a conversion factor somewhere between 2 and 3. These lights have been made to output about 5k or 6k lumens. It is just too much power to get more than that in this light format.
I believe there is a thread on here about modding this light with a KaiDomain driver. Maybe it was 9x light but very similar.
If you want to and are comfortable with tearing it down and provide pics, we will be happy to help.

The first one you listed is the one I have, but i paid 57 for it. :slight_smile: I want to mod it to get a little more out of it.

Thank you,
Paul

Thanks for the Welcome!! :slight_smile:

Thank you very much for the offer!! I will be pulling it apart in the next few days. Hoping a resister mod can get it a little brighter!!

Paul

Ok, I put some fresh 26650 batteries in and retested, i have 6.2A at the tailcap. Better than the first test! So, this would mean 1.5A at each LED?

Thanks,
Paul

That’s a decent power input, assuming 80% efficiency, you are getting 60W+ to the emitters. That’s in the ballpark of 1.5A per emitter. Probably close to or over 4000 lumens OTF.

Now, when I just took it outside, it has a discernible hum/vibration. Why would that be???

Thanks,
Paul

P.S. I will test the output sometime this week.

That’s the flux capacitor :wink:
No idea, but it might be the driver’s boost switching regulator. Sometimes the coil can make noise.
Does it hum/vibrate on high? I could expect the PWM of med or low causing noise as well.

It vibrates/hums on all settings.

It is bright though! May want a little more out of it (am I too greedy?? I feel the POWER!!!)

Thank you,
Paul

Too greedy? You’ll find out once you mod it.
Hint: the humming is trying to tell you something. :wink:

I don’t want to burn it out, is that a possibility??

Um, yeah. It’s possible. :smiley:
Only one way to find out for sure though. :wink:
These 12x lights when pushing any power cannot be run for very long. Your light is right around the limit I’d say. if you only want a massive output for a couple of minutes, then you might get away with an increase. I do not have one of these, but there are threads on here about modding them. Most involve installing a new driver from Kaidomain.
Good luck with the mods. If you want to try something with your existing driver, post a few pics of it and we’ll help you blow it up increase the output a bit. :smiley:

Hi,
Thinking about splashing out on a huge 12 LED Skyray, well take a look here at the junk being passed off on eBAY

http://www.999wed.com/skyray_torches.htm

Assuming of course you can find a genuine seller to sell you either a fake or one that puffs out lovely blue smoke.

When you finally get your torch don’t be surprised when eBay supports the seller and leaves you the victim of fake or shoddy goods.

Cheers.

Aidie.

HI

DOES ANYONE KNOW IF BY ADDING ONE MORE BATTERY18650 TO IT TO MAKE 4 CONFIG , HAS ALREADY 3 BATTERIES AS A STOCK, WILL IT BURN THE CIRCUIT ? :beer:

THANK YOU VERY MUCH
60W Digital & Lead-free Soldering Station

Temperature read out in ℃ and ℉
On/Off switch on the right side of the unit.
MCU controlled temperature calibration. rc AIRPLANE
Simulate bar indicating heating up status.
LCD display screen making control visualization.
User-friendly menu enables system setting easier.
Separate iron stand to save room and to make easier deposit.
Buttons (1, 2, 3) for pre-setting or switching frequently used temperature.
Low-voltage heater separated from power supply to keep soldering work safer.
Soldering tip designed separate from heater and using exchangeable 900M series to save use-cost.

MORE INFO http://www.atten.com/project/at938d/

i like them it can help me

fms rc airplane