Trustfire AK-47 9x XM-L Driver Defect / Repair / Upgrade / Photos

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dthrckt
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Looks like lightmalls has the original 9 LED driver (large capacitor), and it is cheaper than kaidomain
http://www.lightmalls.com/9-led-series-3-mode-for-three-lithium-battery-...

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dthrckt wrote:
Looks like lightmalls has the original 9 LED driver (large capacitor), and it is cheaper than kaidomain http://www.lightmalls.com/9-led-series-3-mode-for-three-lithium-battery-...

Nice find. I should have the new version from Kaidomain late this week, if they aren’t good, I’ll order a couple of these from LightMalls. I noticed in the specs this driver has a 30 volt output. Should be perfect for the already wired in 9s1p like the AK-47.

Richie

dthrckt
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Or 5x MTG2 Shocked

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cop
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If this ak 47 have all the resistor there on the stock board. Give out about 3500 lumens?
*Using TF 26650

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cop wrote:
If this ak 47 have all the resistor there on the stock board. Give out about 3500 lumens? *Using TF 26650

Hi Cop,

The stock driver with 3 sense resistors intact , runs at 5.74a at the tailcap with 3 x Trustfire 5000mAh cells. It grossed 64 watts. I’m pretty sure that was well past 3500 lumens and is very bright. Would easily outshine a Trustfire TR-J12 or J18.

The same stock driver but with only 2 resistors, which seems to be the way they are shipping, unless the Manafont version is better, runs at about 3.5a at the tailcap with 3 x Trustfire 5000mAh cells for about 38 gross watts. I’d say in this reduced output capacity, the 38 watts is about equal to the output of a Skyray King, about 2400 lumens.

Richie

cop
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Thanks Richie086 ,
guess this ak 47 should be my last light; provided the vendor wiling to open up to check if there is 3 resistor there.

dthrckt
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“last light”

BAHHAHAHA

yeah right, but at least it should keep you happy for awhile Party

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dthrckt wrote:
Or 5x MTG2 Shocked

Could you imagine that? I’d love to modify one of these with 5 of those, holy cow Shocked

Richie

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That would be one bitch of a mule light J)

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gords1001 wrote:
That would be one bitch of a mule light J)

But what driver would you use? What would happen if you used the KD 9x LED driver?

I wonder what would happen if I only replaced 5 of the LED’s with MTG2 and left the other 4 T6’s in there all wired in series?

Richie

cop
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Yeah, last piece of light i am getting for this time round, of 4 lights Oops
Originally getting ak 47 but change it to HIDs.

My next round should be Stl v6 & BTU or TKs.

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Hi folks,

Just got my newly designed KD 9x T6 drivers today. After soldering a +B spring onto one of them, tossed it into the light. A bit disappointed at the output on high mode with this new design at 5.50 amps. Using fully charged MNKE 3 × 26650’s, and assuming voltage won’t sag below 3.8 volts per cell, that’s a gross output of 62 watts. Quite a bit off from the original driver design at 8.14 amps or 90 watts.

On two cells, tail cap current on high was 5.0 amps or 38 watts.

Still, this is a huge amount of light and perhaps the driver will last longer not nearly heating up as much. I also added a bunch of the thermal foam goop they include between the driver boards, so I’m really not concerned about heat on this one to much. So I don’t think I’m going to have this one encapsulated, unless I purchase the old-style driver from the other retailer.

Anyway, I finally have a super powerful 9x T6 light with 3 wonderful modes, High-Med-Low and none of those worthless blinky modes. Aside from the lower output, it works perfectly in an AK-47 stock wired in 9S1P.

Richie

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hey richie, so this new kd design is getting less amps than the stock driver?
i remember you saying you got somewhere around the 5.75amp range with the stock driver using 3 trustfire flames.
but then again, that burnt out on you right?

if you wanted to, are you still able to get the old kd design…the one you sold me that was encapulated?

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blueb8llz wrote:
hey richie, so this new kd design is getting less amps than the stock driver?
i remember you saying you got somewhere around the 5.75amp range with the stock driver using 3 trustfire flames.
but then again, that burnt out on you right?

if you wanted to, are you still able to get the old kd design…the one you sold me that was encapulated?

Hi Ray,

The stock AK-47 driver with 3 proper resisitors on the driver puts out 5.75 amps, but the way they’ve been shipping, they only seem to do about 3.50 amps. So comparing a proper stock driver to the new KD driver, they are about the same. You won’t notice .25amps extra power. I’m perfectly fine with it as is. If these new ones ever burn out, I’ll get the same old-style design from the other retailer, the same as I installed in your light.

So you can still purchase the better old design but not from Kaidomain, but I’d have to check my links to see who has it.

Richie

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Ray, here is the better old-style driver that LightMalls sells. This one should be the same as the one I installed in your light. Dave found it recently at Lightmalls. I’d have to say that huge capacitor is what makes it a super-driver..LOL

http://www.lightmalls.com/9-led-series-3-mode-for-three-lithium-battery-...

Richie

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ok, i was just making sure that the 8amp drivers were still available, incase my driver goes poop.

so your getting 5.5 amps. thats still very bright. i remember when i only had 2×26650’s and that was just under 5.5 amps, and i thought that was extremely bright already.

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blueb8llz wrote:
i remember when i only had 2×26650’s and that was just under 5.5 amps, and i thought that was extremely bright already.

Exactly Wink

Richie

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Since I needed to test functionality on the second redesigned KD driver, I decided to toss it into the second AK-47 we have.

The only difference on this one, I removed the stock wires from the driver and soldered on some new, 22g Teflon coated multi-strand copper wire, and connect those wires to the 22g silver coated wire I had already installed up to the LED’s.

The driver worked as perfectly as the other 3-mode I installed in the other light, but pulled a bit more current at the tail cap at, 5.58a or 64 watts on high with 3 Enerpower 26650’s.

It’s likely the slight increase from this driver at 5.58a, compared to the other one being 5.51a, could actually be due to the better wiring on the driver. So one light is about 62 watts and the other about 64 watts. No big deal in difference and you certainly can’t see the difference except if you use a light meter.

Richie

dthrckt
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well, i might have to order 1 of the old style from lightmalls…

I bet we could estimate (difference in) efficiency of the new KD driver and stock driver by comparing ceiling bounce readings

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dthrckt wrote:
well, i might have to order 1 of the old style from lightmalls…

I bet we could estimate (difference in) efficiency of the new KD driver and stock driver by comparing ceiling bounce readings

If you’re looking for even more output, getting the Lightmalls version is a great idea. The ceiling bounce comparison sounds interesting too.

Richie

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Hi Guys,

Pix of my driver in a stock TR J18 – as you can see the driver does not have that third resistor at all – doesn’t even look like it was ever there. This light now seems to run at 50% even on high, it was fine for the first few months of usage now I suspect something has gone bad in the driver. I fortunately have 2 X TRJ18 so I simply swapped the entire tail section from the good one and that doesn’t make any difference which isolates the issue to something in the head assembly. Seems very unlikely it would be an LED issue especially as they all light up (of course as they are in series) so that leaves only a driver issue.

My partner happens to be an electrical engineer who specialised in circuit board design… so will get her to have a look (unlikely she will care to spend the time though, helping me with my “flashlight” – she already makes fun of me for my collection). Suspect as the TRJ18 it’s only 7 LED’s there was no need for the extra resistor???

http://i.imgur.com/orXD3yB.jpg

Richie086 wrote:
Dexter Tang wrote:
My cousin got a nitecore tm15 at 2000 lumen yet my trustfire ak 47 supposedly at 10000 lumens is dimmer. I opened it up to take a look if its then resistor is not connected and to my surprise, the resistor arent there at all.

Dexter,

So I assume the driver appeared to look exactly like the one in my photo of my AK-47? I just want to make sure yours has the same driver as mine. If possible, see if you can post a photo of the driver.

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jaws_one wrote:
Hi Guys,

Pix of my driver in a stock TR J18 – as you can see the driver does not have that third resistor at all – doesn’t even look like it was ever there. This light now seems to run at 50% even on high, it was fine for the first few months of usage now I suspect something has gone bad in the driver. I fortunately have 2 X TRJ18 so I simply swapped the entire tail section from the good one and that doesn’t make any difference which isolates the issue to something in the head assembly. Seems very unlikely it would be an LED issue especially as they all light up (of course as they are in series) so that leaves only a driver issue.

My partner happens to be an electrical engineer who specialised in circuit board design… so will get her to have a look (unlikely she will care to spend the time though, helping me with my “flashlight” – she already makes fun of me for my collection). Suspect as the TRJ18 it’s only 7 LED’s there was no need for the extra resistor???

http://i.imgur.com/orXD3yB.jpg

Hi Jaws, so I assume the drivers in both your J18’s don’t have that third resistor? From the photo, the +B spring looks great, so I couldn’t have gotten to hot.

Richie

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The value 3R30 seems really high for a current sense resistor (3.3 Ohms). Usually it is below 0.5 Ohm, On a light like this, under 0.1 Ohm total.
What is the value of the resistor under the electrolytic capacitor (the closer black striped can)?
What’s on the other side of the driver?

Welcome the night.

My Reviews   My Mods    http://budgetlightforum.com/search?

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Hi folks,

Don’t bother getting the LightMalls version of the 9x T6 driver unless you simply need a replacement for your stock driver. It isn’t like shown on their website photo with the old better style capacitor. It’s the same one that Kaidomain sells. I haven’t installed it in my Trustfire AK-47 yet to check output, but I’ll do that later tonight and let you know.

For now, the original high output capacitor style is officially out of production. Man, what a bummer :_(

Richie

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Okay, just installed a gold plated +B spring on the Lightmalls 9x T6 high output driver, and verified it’s exactly the same output as the Kaidomain version. With 3 × 26650 MNKE cells, it’ll gross 62 watts – 64 watts or 5.60 amps at the tail cap.

Don’t get me wrong, this is huge output on a Trustfire AK-47, it just isn’t 90 watts output like the old style Kaidomain driver. But battery power will last longer and I won’t have to worry about the light hand-grenading on me.

I also just received my SoShine LIFEPO4 26650 Protected cells. I’ll see how they work on this light. I’m curious to see how the low voltage protection works with these lower voltage cells.

Richie

bdiddle
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Not to bring this back from the dead….

But is this the KD driver being used? http://www.kaidomain.com/product/details.S020165

I have a Trustfire 9T6 which seems to be identical to the Skyray 9T6, and was considering upgrading it.

Is that driver the only real option now? The description still says 70-100w, but if its only doing around 60, that is disappointing.

Newb

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bdiddle wrote:
Not to bring this back from the dead….

But is this the KD driver being used? http://www.kaidomain.com/product/details.S020165

I have a Trustfire 9T6 which seems to be identical to the Skyray 9T6, and was considering upgrading it.

Is that driver the only real option now? The description still says 70-100w, but if its only doing around 60, that is disappointing.

Hi Bdiddle,

I’ve purchased the 9x T6 driver from 3 different vendors, Lightmalls, Kaidomain, and now the one I just received today from lck-led.com. Both Lightmalls and lck-led both show the larger capacitor older more powerful version, but they’ve all arrived in the new style (compact version) that Lightmalls sells. So don’t go by the photograph on the websites.

Unfortunately none of the 9x T6 drivers output the rated 90 watts – 100 watts installed in my Trustfire AK-47 3 × 26650 light. The drivers I received from Lightmalls and Kaidomain, both output 62 watts or 5.55a at the tailcap. I just installed the lck-led driver and that one produced 67 watts or 5.90a at the tailcap.

I’m really pissed off these retailers show a photo of a driver, but have no problem shipping a newer and less powerful version of the driver. Still, even at 62 watts, a Trustfire AK-47 outputs a huge amount of flood light. I’m really not aware of any light these days that can flood like one of these 9x T6 lights.

Here are the links to the above drivers.

http://www.lck-led.com/26mm-3000ma-driver-modes-p-962.html

http://www.lightmalls.com/9-led-series-3-mode-for-three-lithium-battery-...

http://www.kaidomain.com/product/details.S020165

Richie

bdiddle
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I guess before I order an iffy driver I need to get some good leads for my DMM and get a good tailcap amp reading.

I was also considering upgrading to U3 led’s, or sinkpads……but that would be pricey and time consuming.

Did you get an AR coated lense?

Newb

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bdiddle wrote:
I guess before I order an iffy driver I need to get some good leads for my DMM and get a good tailcap amp reading.

I was also considering upgrading to U3 led’s, or sinkpads……but that would be pricey and time consuming.

Did you get an AR coated lense?

The AR coated lenses available these days do not come in a large enough size for a Skyray or Trustfire 9x T6. But either of these lights produce so much output, even at 5.55a – 5.90a, an AR coated lens is really not required. But if one was available, I’d still purchase it..lol.

Also, I recall you mentioned you want to install one of these drivers in a Skyray 9x T6. It’s possible with that light a problem may arise due to it being wired in 3S2P, if I recall correctly. I can only say any of the drivers I mention in my last post to you, will work perfectly in a Trustfire AK-47 due to it being wired fully in series.

Richie

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Richie086 wrote:
bdiddle wrote:
I guess before I order an iffy driver I need to get some good leads for my DMM and get a good tailcap amp reading.

I was also considering upgrading to U3 led’s, or sinkpads……but that would be pricey and time consuming.

Did you get an AR coated lense?

The AR coated lenses available these days do not come in a large enough size for a Skyray or Trustfire 9x T6. But either of these lights produce so much output, even at 5.55a – 5.90a, an AR coated lens is really not required. But if one was available, I’d still purchase it..lol.

Also, I recall you mentioned you want to install one of these drivers in a Skyray 9x T6. It’s possible with that light a problem may arise due to it being wired in 3S2P, if I recall correctly. I can only say any of the drivers I mention in my last post to you, will work perfectly in a Trustfire AK-47 due to it being wired fully in series.

Yeah I’m aware I’d have to rewire the LED’s……that’s why I was considering just replacing them all. And then I realized I only paid $50 for mine at the Wallbuys sale and it may not be cost effective in comparison Big Smile

Newb

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