[♛ FreemeGB] Haikelite MT09R 3x XHP70.2 25,000lm & 3x XHP35 Hi 6500LM Flashlight Group Buy -【 ACTIVE 】

0.5mm

That is quite thin. As expected from just looking at the picture.

I think they could have gone with thicker wire, like 0,7mm, or even 0,8mm. But that still is a better decision that either leaving the steel springs alone, or bypassing the springs, which comes with a huge risk from the manufacturer.

It just means the MT09R is the true grail light.

I’m home. The batteries at 4.01,4.05V and it puts out with these 19950 lumens. Now I putted them on the charger and wait because I want to use same set as the stock 18300 lumens measurement.

Please me coupon

Interested. Thanks

My final number with all spring bypasses with 20 AWG in battery tube and 18 AWG on driver. Fully charged LG HG2s.
21120 lumens

I did a video on setting the temperature. If your in ramping mode, make sure you ramp down and hold to get into the menu. Normal NarsilM is usually 8 secs, but I think NarsilM on the MT09R you hold down for 20 or so seconds?

Anyway, after that it should be the same menu settings and procedure.

Aaand it already died :cry:
I tried to measure lumens at 30sec. Right at 30s the light turned off. Or I thought. Now it has ramping to 400 lumens and instead of turbo it barely glowing leds. I think the fet died.
So don’t bypass your springs with wires!

I guess now you can show us pictures of the driver.

Did they use the same FET TA used? If so, I wonder what happened.

@ZozzV6, that should on not have happened. Texas Ace has done plenty of bypasses on XHP70.2 lights, and none have suffered from this fate.

I suspect the problem comes from the driver and not the LEDs.

Oh god no! :weary:
I was actually preparing to do this for when my light arrived.

perhaps the FET is only bad soldered.

Any burnt smell?

Yes it has burnt smell. I made a video of the behaviour.
And opeled it up. The fet burned. I don’t know but the driver has two places for fet. Does haikelite cut corners and used one instead of two? TA designed it to use two because the high current or not?


I think it was also melted the solder and raised by the pressure when the magic smoke came out.

I did not find any datasheet of this manufacturer by googleing the markings.

Hmmm, that is not good.

It does indeed sound like the first channel is still working but the main FET is not.

I know they said they could not get the SIR800 FET I speced for the driver in China (and used for the ~100 lights I built with high CRI LED’s that pull WAY more current then the LED’s they use).

I am thinking that instead of ordering the more expensive SIR800 from mouser / Digikey / Arrow like I suggested they changed the FET to another model.

Please do let us know what FET they are using now.

TA: I was faster :smiley:
Look up

That is even more strange, the R800 is the same as the ones I have but the rest of the markings are different and the font / layout is completely different from the SIR800’s I have.

Lexel showed another FET with the R800 marking that was rated much lower, I wounder if they used that thinking it was the same thing instead of the full model number I sent them. I sent them the parts to build 100 drivers with the proper components as well.

The high CRI 4000k LED’s I used in most of the lights I built generally pull around ~25-30% more current then the stock LED’s and they were bypassed springs as well.

So I know that the proper SIR800 can handle the stock LED’s no problem seeing as I have not heard of an issue or failure of any of the ~100 lights I built.

Thus this must be another FET.

The good news is that it is an easy fix, you can simply install a new FET for about $1 and it will be better then new.

Did you used one fet or two?
And next to the fet there is a place for capacitor. Does it good to be missing from there?