LiteFlux LF2XT Review (1xAAA) - RUNTIMES, BEAMSHOTS, and more!

djshiner

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FYI, finally got around to testing the auto-shut-off feature (8 clicks + PH). It does indeed last for exactly 3 mins, according to stopwatch timer. Pretty good little timer in there ...

I've decided to run the LF2XT on my keychain as EDC with auto-shut-off engaged and the head locked-out (on a L92 battery). This way, I don't need the over-discharge protection feature, since I'm not running a NiMH or Li-ion. :)

Do both your samples shut down at exactly 3 minutes? I have a Q4 that shuts off at 3min & 12seconds and a R2 that shuts off at 3mins & 8seconds. This is not a big concern just a point of interest.
I also EDC with atuo-shut-off on along with a L92.
 

selfbuilt

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Do both your samples shut down at exactly 3 minutes? I have a Q4 that shuts off at 3min & 12seconds and a R2 that shuts off at 3mins & 8seconds. This is not a big concern just a point of interest.
I also EDC with atuo-shut-off on along with a L92.
Just tested the black one ... 3min 9secs to shut-off ... :whistle:
 

HighLumens

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At lowest output ("0%") I get the promised 3 flashes every 35 seconds and then 15 flashes and then the light turns off.

p.s.: selfbuilt pm sent.
 

clintb

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The 900mAh NiMH in question were provided by Lumapower for the Avenger GX review (green wrapping, no label - printed "HI-WATT NiMH"). My Maha charger rates them at closer ~950mAh, which is very consistent with my older Energizer 1000mAh rated cells that I used in some of the older L0D/Jet-µ runs.
Sanyo had some 900mAh AAA's, which were actually branded under GE / Sanyo. I bought a four pack at Fry's Electronics around four years ago and still have them. They're holding up like champs!
 

The Mad Scotsman

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What an excellent review. I sent a little thank you to your fund. Oh, and of course, I bought the LF2XT in natural as well.

3 Flashlights in two weeks and counting.

LD10: for the Van
PD30: when out at night in the dark and at work.
LF2XT and my Benchmade 943 knife EVERYWHERE. (When it gets here.)
:broke:

Quick question though. I understand that when you are switching between output levels you have to slow down because of the delay in the processor but does that count for programming too? Do I have to wait a half second between presses when programming?
 

selfbuilt

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Quick question though. I understand that when you are switching between output levels you have to slow down because of the delay in the processor but does that count for programming too? Do I have to wait a half second between presses when programming?
Thanks for the donation. There's no need to wait any additional time when programming - just proceed with the necessary clicks and press/holds. The ~0.3sec delay in ramping is just due to to the light waiting to see if a command sequence is coming. I can't say I noticed anything unusual in the programming menus - everything behaved as expected.
 

Beampower

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Hi, I am new to the Forum,Can someone tell me how i purchase this Brilliant little light please?(Liteflux LF2XT).Thankyou, Howard :twothumbs
 

mightysparrow

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Hi, I am new to the Forum,Can someone tell me how i purchase this Brilliant little light please?(Liteflux LF2XT).Thankyou, Howard :twothumbs

Beampower: you can also go to the Marketplace and go to the Dealer's Corner. There, you will find threads in which you can buy the LF2XT. Two different dealers who have threads there have been recently offering special editions with upgraded LEDs. I just ordered from both - it was time for me to become a LF2XT owner myself!
 

Salbach

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I'm still rather amazed by all the folks who run their L0D/LD01 on 10440. If you happen have one with a low Vf, you are really going to be subjecting everything to a pretty high current drain. Not good for emitters, circuits, or batteries ... :whistle:

I'm running my LD01 on a protected 10440 (Trustfire). Would you regard this as dangerous for emitters and circuits, too? :shrug:
 

Salbach

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Incredible review - thanks! lovecpf

I'm not having my charger yet, but already two protected 10440 from Trustfire.

Since I couldn't wait trying them in my LF2XT and feeling safe because of both ODP of the light and the protection circuit of the battery, I put it in the light only to be confused:
The LF2XT does not stay on with the 104400 inside. It acts like the momentarily switch (tactical) would have been enabled, but it isn't!
The LF2XT runs as it should on Eneloop or alkaline, but immediately turns of after releasing the button on the 10440.

Taking the same 10440 out and putting it into my Fenix LD01 Stainless Steel turns the LD01 into a little sun, like already written everywhere. So it's supposedly not any kind of overdischarge protection, right?

I also thought something might be misconfigured on my LF2XT and I did 10C + PH from FUI to reset the light to factory settings, but no change.

Also the output (just personal impression) by holding the button down seems to be at best around the Eneloop level. I understand, it should about double. :mecry:

Any ideas? :confused:
 

selfbuilt

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The LF2XT does not stay on with the 104400 inside. It acts like the momentarily switch (tactical) would have been enabled, but it isn't!
Sounds like a contact problem (may be due to the relative length of the cell, or migration of lube onto contact surfaces).

I've had similar problems on occasion with both my LF2XT and LF3XT when replacing the Li-ion cell (i.e. acts a momentary when you press the button). Try thorough cleaning of the components and careful re-assembly. I am not sure of the source of this problem, but I find it does eventually resolve with enough cleaning and re-assembly. :shrug:
 

Flying Turtle

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Sounds like a contact problem (may be due to the relative length of the cell, or migration of lube onto contact surfaces).

I think you've nailed it about the length of the cell. Adjusting the depth of the pill in the head ought to fix things. Not hard to do with some sharp pointed tweezers.

Geoff
 

gswitter

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The protected 10440 may be too long for the LF2XT. I get the same behavior you describe with any battery type if I don't screw the body (or tail cap) on tight enough. The longer cell may not allow the body to be tightened enough.
 

selfbuilt

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I think you've nailed it about the length of the cell. Adjusting the depth of the pill in the head ought to fix things. Not hard to do with some sharp pointed tweezers.
The protected 10440 may be too long for the LF2XT. I get the same behavior you describe with any battery type if I don't screw the body (or tail cap) on tight enough. The longer cell may not allow the body to be tightened enough.
Yup, I've suspected that relative battery length is the issue (or conversely, loosening of the pill). Since I tend to tighten everything when I clean a light, I've never been sure about what exactly has resolved the problem when it has cropped up.

Incidentally, this is why I always recommend a thorough cleaning - it's amazing what a little non-conducting lube on contact surfaces can do to lights with sophisticated control circuits. But I agree, in this case, I think it's more likely to be a contact issue due to length. Adjusting the pill in the head is the most likely fix.
 

Jay R

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Sorry. Nothing to do with the battery length I think. The circuit inside the light seems to be not 'compatable' with the circuit in the cell. It happens on all Trustfire protected cells. Got the same in mine and others I heard of.
 
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Salbach

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Yup, I've suspected that relative battery length is the issue (or conversely, loosening of the pill). Since I tend to tighten everything when I clean a light, I've never been sure about what exactly has resolved the problem when it has cropped up.

Incidentally, this is why I always recommend a thorough cleaning - it's amazing what a little non-conducting lube on contact surfaces can do to lights with sophisticated control circuits. But I agree, in this case, I think it's more likely to be a contact issue due to length. Adjusting the pill in the head is the most likely fix.

After Selfbuilt's initial recomendation to check, clean and resemble everything I did that, except for removing the pill (is this how you call the light engine as slang? Sorry, I'm German native...;-) Anyway, so far I didn't change the pill adjustment; first have to buy the right tweezers.

But during the forementioned examination of the LF2XT I found that the inner tube for the battery has a length that, in order to work properly, must be shorter than the battery inside by a certain degree. If this isn't the case, then the plus end (+) of the battery touches the center contact of the pill, but the wall of the tube cannot touch the outer brass ring, which is minus (-).

If this theoretical excercise is true, an adjustment of the pill would probably not solve the problem, right? The inner tube would have to be lengthend or (!!) the contact brass ring of the pill would have to be raised. :thinking:

Comments?
 

Flying Turtle

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Hey Salbach. Sorry about your troubles. Thought I might point out a few things that could help. First of all, have you ever unscrewed the switch? A few times (it just happened again) I had my light turn "on" by itself after screwing the head back on. It would not turn "off" until I unscrewed and retightened the switch. Something funky in the electronics I guess.

In regards to the contacts in the head, there are actually three contact points. There is the positive battery point, of course, the main battery tube, and the inner sleeve. This is why the "pill" must be at the correct depth.

Don't know if any of this is news to you, but I feel bad that your light is not working right. It's such a fine light when everything functions.

Good luck.

Geoff
 

HoopleHead

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Great review as always, thanks!

To clarify, using the CUI

I can set the "user mode" to max, so that itll always come on on max (or whatever I set it at), correct? Then 1C+PH will effective be the same as 1C. But for "min" even if you change it, the next time you use it it'll always go back to min.

It's between this and the Preon for me, but I want it to come on on "high" for the first click/mode.

Thanks!
 

Flying Turtle

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If you are in the CUI wherever you ramp to before turnoff is where the light will return on restart. If you do a 1C+PH to get to high, then turn it off, the light will return to whatever the last "user mode" setting was. If it is most important for you to have high first then you should have it programmed for this in the FUI. That way you don't have to always remember to leave it on high in the "user mode" of the CUI.

Hope this helps.

Geoff
 
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