Liteflux LF2XT (Part 3)

[TITAN1833]

You've captured it well here. That's exactly what mine was doing. Not something that occurs with the LF3XT. I only tried it with 1.2 and 1.5 volts, but maybe it's less noticeable at higher voltages.

Geoff

I only have 1.5 AAA I'm waiting on DX for my charger so I can try 10440 and 1.2 volt rechargeable it has shipped so I could get it this coming week :candle:

 

[wapkil]

Here's a vid of the flash :thumbsup:

http://www.youtube.com/watch?v=xnic_y9lawc

[edit] I think you can see it there like I said it's not bad,also I think it is lower than the lowest low.

I think that a similar blink is present in the Zebras H501. If you turn them on on high, it looks like the light starts on low and after a fraction of a second switches to high. In Zebras it's visible but not something that would bother me.

Just my .02lm to confirm that it also happens to other lights.

 

[StandardBattery]

Here's a vid of the flash :thumbsup:

http://www.youtube.com/watch?v=xnic_y9lawc





[edit] I think you can see it there like I said it's not bad,also I think it is lower than the lowest low.

OK I don't have that, I tested for it on two lights with 10440 and NiMH. That is sort of what I was thinking it would look like based on Flying Turtle's description of it as a blink/pause type of artifact.

The other high flash I noted, is pretty standard and nothing to worry about, LiteFlux has it very well controlled.

 

[TITAN1833]

Ok here's the strange thing I found a 10440 with enough juice and this is what I found the low flash on low level has gone, I also tried 1.2 volt rechargeable but the low flash remains hmmm! weird :thinking:




[edit] I will leave it off for ten minutes and check back.

 

[StandardBattery]

Very strange, as on my freshly charged NiMH I could not see it. I wonder if it is just a sign of some component tolerances that are pretty tight. I'll test alkaline now.

Update: no problem with Alkaline either.

 

[TITAN1833]

Right I have left it awhile with 10440 and no low flash now,I'm wondering if it's the quality of battery I used :shrug:

These are the offending batteries,

 

[jahxman]

I can't reproduce this low-on flash on my LF2XT with any of my 10440's (AW 340 mAh , Ultrafire 500 and 600 mAh) but I can reproduce it with an Energizer L92, Duracell power Pix Nickel Oxy hydroxide, SoShine NiMH 900mAh, Energizer NiMH 900mAh, and Duracell, Radio Shack and Energizer alkalines.

In other words it happens with all my < 2 volts batteries, and with none of my > 3 volts batteries.

Maybe the boost circuit ramping up?

 

[StandardBattery]

Interesting. Probably the components in the boost circuit are a better matched on some of the lights.

For the record I used AW 10440, Powerizer 1000mAh NiMH (don't know much about these), and regular Energizer AAA alkaline.

 

[djshiner]

I can't reproduce this low-on flash on my LF2XT with any of my 10440's (340, 500, and 600 mAh) but I can reproduce it with an Energizer L92, Duracell power Pix Nickel Oxy hydroxide, SoShine NiMH 900mAh, Energizer NiMH 900mAh, and Duracell, Radio Shack and Energizer alkalines.

In other words it happens with all my < 2 volts batteries, and with none of my > 3 volts batteries.

Maybe the boost circuit ramping up?

I was using a L92 when I also reported seeing this almost unnoticable blink when turning on my light after it is off longer then about 15 seconds.

I would like to make it clear to anyone reading here and do not have this light to test for themselves that this is not a big deal, for me anyway. I am not going to send my light back for this. I am still trying to figure what end to poke to turn it on and what end not to look into while I am doing it.

 

[jahxman]

I would like to make it clear to anyone reading here and do not have this light to test for themselves that this is not a big deal, for me anyway. I am not going to send my light back for this.

Yeah me neither, its very slight and I will be running on 10440's anyhow most of the time. Love this light a lot so far!

 

[TITAN1833]

Yeah me neither, its very slight and I will be running on 10440's anyhow most of the time. Love this light a lot so far!

Well I don't think anyone was saying it's that bad,I thought we're discussing why and how that's all and I'll say it again it's still a great little light regardless :thumbsup:

 

[HighLumens]

Re: Liteflux LF2XT (Part 2)

Users who enable both the over-discharge protection function and the auto-off function must be aware that after the auto-off function is enabled, the previously enabled over-discharge protection function will not be executed due to insufficient memory space according to the designer.

The fact that auto-off over rides the over discharge protection is written in the flowchart. Read Note2 (I'm writing it here):

Note2 the priority of Auto-OFF is higher than ODP
ODP will active when Auto-OFF disable or
temporary disable only .

So, at least we were already told about this "problem". I personally think over discharge protection should over ride auto off...

 

[djshiner]

Re: Liteflux LF2XT (Part 2)

The fact that auto-off over rides the over discharge protection is written in the flowchart. Read Note2 (I'm writing it here):

Note2 the priority of Auto-OFF is higher than ODP
ODP will active when Auto-OFF disable or
temporary disable only .

So, at least we were already told about this "problem". .

I was thinking the same thing. I look at it as - 'we can have ODP or Auto-Off but not both' at this time. LiteFlux should market this as such in the specs for this light. I expect to be able to have both when a MCU with more memory is available.

I am glad they included Auto Off with this great little pocket Light because that is what I use. Well done LiteFlux!

 

[juplin]

Hi, HighLumens, You read the Flowchart very carefully.:thumbsup:
I think LiteFlux should print this important message on the Operation Manual.

 

[DHart]

Regarding the reported flash, if I really try hard to detect a flash, I can just do so when I go out of my way to try to find it... but if I hadn't really tried to make the light do it and looked closely to try to find it, I doubt I would even have given it a thought, with my light. During usage I never notice anything odd or bothersome of any kind with my light. It works perfectly for me, doing just what I ask it to do. Turns on, turns off, ramps up, ramps down, quick to minimum, quick to maximum, memorizes user settings. :thumbsup: Perhaps I'm just not being quite as critical as some may be, but in usage, I am very happy with the functioning, output, and quality of light this little bugger offers! Or my sample is better than some others, perhaps? :shrug:

 

[BabyDoc]

Re: Liteflux LF2XT (Part 2)

Note2 the priority of Auto-OFF is higher than ODP
ODP will active when Auto-OFF disable or
temporary disable only .

So, at least we were already told about this "problem". I personally think over discharge protection should over ride auto off...

I actually found that ODP, if first turned on but then disabled by AUTO_OFF being then turned on, WILL NOT be reactivated simply by turning off the AUTO-OFF. After turning off the AUTO-OFF, you must also turn off and back on, the ODP.

Don't you think the flowchart should also warn you that the number of modes can not be changed while the Auto-OFF function is turned on, and that any attempt to do so will not only fail to change the number of modes, but also shorten the Auto-OFF from 3 min to 8 to 40 seconds? A factory reset is the only way to return the light's Auto-off to 3 minutes.

I agree with you that the discharge protection should over-ride the AUTO-OFF, since permanent damage can be done to rechargables that are over discharged.

 

[djshiner]

Re: Liteflux LF2XT (Part 2)

I actually found that ODP, if first turned on but then disabled by AUTO_OFF being then turned on, WILL NOT be reactivated simply by turning off the AUTO-OFF. After turning off the AUTO-OFF, you must also turn off and back on, the ODP.

Don't you think the flowchart should also warn you that the number of modes can not be changed while the Auto-OFF function is turned on, and that any attempt to do so will not only fail to change the number of modes, but also shorten the Auto-OFF from 3 min to 8 to 40 seconds? A factory reset is the only way to return the light's Auto-off to 3 minutes.

I agree with you that the discharge protection should over-ride the AUTO-OFF, since permanent damage can be done to rechargables that are over discharged.

LiteFlux needed to document these issues/features in their manual and specs for this light and not just the flow chart from the beginning, if they were known to them.

As to what overrides what; they might have just offered a choise of ODP or Auto-Off or neither in the user interface and have nothing overriden. I say 'might have', because we do not know if there was even enough code space for that.

From what I know now if I want to use 10440s I will have ODP on and not carry it in my pocket or any place it can get turned on by accident if that concerns me. If I want to carry it in my pocket I will have Auto-Off on and run on AAAs. At the same time insuring nothing is overriden.

Really nothing has changed for me personally except now I have the choise of Auto-Off also. LiteFlux rules!

 

[HighLumens]

Hi, HighLumens, You read the Flowchart very carefully.:thumbsup:

😗

I think LiteFlux should print this important message on the Operation Manual.

+1

I actually found that ODP, if first turned on but then disabled by AUTO_OFF being then turned on, WILL NOT be reactivated simply by turning off the AUTO-OFF. After turning off the AUTO-OFF, you must also turn off and back on, the ODP.

That's annoying, I was hoping the ODP would turn back on by itself when auto-off had been disabled...

I agree with you that the discharge protection should over-ride the AUTO-OFF, since permanent damage can be done to rechargables that are over discharged.

+1. Why would someone prefer not to waste their battery (using the auto-off)when they destroy it by overdischarging:shrug:?

...LiteFlux rules!

:thumbsup:

 

[BabyDoc]

Re: Liteflux LF2XT (Part 2)

From what I know now if I want to use 10440s I will have ODP on and not carry it in my pocket or any place it can get turned on by accident if that concerns me. If I want to carry it in my pocket I will have Auto-Off on and run on AAAs. At the same time insuring nothing is overriden.

Really nothing has changed for me personally except now I have the choise of Auto-Off also. LiteFlux rules!

Actually, the safest and easiest thing to do when using rechargables is to loosen the barrel of the light. The light will be locked out and not accidentally turn on in your pocket. (Of course, turn off the AUTO-OFF and turn on the Over Discharge battery protection, too, to protect those valuable rechargables when you do use the light).

Use Auto-off only with primaries, which don't need the battery protection and can be run down completely when you choose to use the light. In this case, you wouldn't need to lockout the light.

 

[DHart]

Re: Liteflux LF2XT (Part 2)

Actually, the safest and easiest thing to do when using rechargables is to loosen the barrel of the light. The light will be locked out and not accidentally turn on in your pocket. (Of course, turn off the AUTO-OFF and turn on the Over Discharge battery protection, too, to protect those valuable rechargables).

Use Auto-off only with primaries, which don't need the battery protection and can be run down completely when you choose to use the light. In this case, you wouldn't need to lockout the light.

Doc... a very sound approach!