Database Users

Torch apps bad for LED light?

Will using a torch app kill the longevity of the LED light?? I thought I heard this before somewhere but I'm wanting to install the Nexus Torch app on my N1..

pookguy88 said:
Will using a torch app kill the longevity of the LED light?? I thought I heard this before somewhere but I'm wanting to install the Nexus Torch app on my N1..
Click to expand...
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search is your friend...
http://forum.xda-developers.com/showthread.php?t=624592&highlight=torch+app+led

@Krumb
Thanks for the link.
But the discussion stopped in April, pre-froyo.
Now that G has enabled Led-on Video recording in Froyo, I am curious to know if any one faced issues while using it for prolonged night time video recording.
I personally used it for a max of 5 minutes continuously, for video recording as well as for use as torch, faced no issues.

I think the light is fine with 'normal' brightness for extended use, but not the ultra-bright setting.

LED light has "lifetime" - which is, it's built to last X hours on average.
Each time you turn it on, you take Y seconds out of its lifetime.
By analogy, each day you live, you're 1 day closer to death. You don't stop living to avoid death, do you?
Yes, the LED will die one day if you use it. If you're not unlucky, it'll be way after your phone turned to a piece of junk. If you're unlucky - it can die the next time you turn it on. Pure statistics of semiconductors, can't predict it.

HTC Flashlight and Related LED Flashlights.. Damage LEDs?

just wondering what type of leds are used on the evo,
if the htc flashlight is prone to "wearing out" the leds,
and if led based flashlights are even safe to use??
i dont want to shorten the lifespan of these leds

TorxT3D said:
just wondering what type of leds are used on the evo,
if the htc flashlight is prone to "wearing out" the leds,
and if led based flashlights are even safe to use??
i dont want to shorten the lifespan of these leds
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http://en.wikipedia.org/wiki/Led#Lifetime_and_failure
Short answer, unless HTC is running damaging levels of voltage through the LED and you have the flashlight on constantly you have nothing to worry about. Even if you run it 24/7 the low end estimate for most LED's is 2.8 years.

sk63 said:
http://en.wikipedia.org/wiki/Led#Lifetime_and_failure
Short answer, unless HTC is running damaging levels of voltage through the LED and you have the flashlight on constantly you have nothing to worry about. Even if you run it 24/7 the low end estimate for most LED's is 2.8 years.
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That may be the case for average LEDs, but high powered LEDs need proper heat dissipation setups. Philips Lumiled K2 LEDs have 1W versions that will burn up without a proper heatsink.
But since HTC released this as a stock app, I'm sure it's fine. I do prefer the "LED Light" widget over HTC's app.

liquidkernel said:
That may be the case for average LEDs, but high powered LEDs need proper heat dissipation setups. Philips Lumiled K2 LEDs have 1W versions that will burn up without a proper heatsink.
But since HTC released this as a stock app, I'm sure it's fine. I do prefer the "LED Light" widget over HTC's app.
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Light widget is nice for quick turn on/off, but I hear it causes a wake lock and besides, the HTC one has more features (3 brightness modes, SOS, and blinking) and it turns on when you first press the app icon. Just hit back and you turn off the flashlight. I guess you can't leave it and use another app while its on like you can with the widget, but what are you doing using a flashlight while texting? lol. Anyways, if it wasn't for the wake lock, I'd still keep the widget around, just in case.

1 watt leds last 4.5 years with avg use of 8 hrs a day. So I'm sure these are even less and should last much longer.
Sent from my PC36100 using XDA App

The LED on my htc ppc-6800 burned out from occasional flashlight usage. Maybe a couple hours of total combined use over a year long period. Just some anecdotal evidence to throw in the mix...

novanosis85 said:
1 watt leds last 4.5 years with avg use of 8 hrs a day. So I'm sure these are even less and should last much longer.
Sent from my PC36100 using XDA App
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It doesn't matter how long they last when they are attached to a proper heatsink as mentioned already in this thread.
The LED's in the camera flash are capable of being driven hard, but are intended only to do so for short periods (when the camera fires it's flash). There is at least one application out there that allows you to put and hold the LED's at that power level, and if used for extended periods at that high level the potential of overheating and destroying the SMD's is there.
I am sure that HTC has determined the maximum thermal dissipation of the SMDs and built their flashlight application around that, knowing that users will be tempted to use the application for longer lengths of time.

Has anyone solved the "Low battery" and "immediate turn off" problem yet?

Has anyone solved the "Low battery" and "immediate turn off" problem yet?
Man this is the most frustrating issue EVER.
I'm running SRF 1.1.0
I have a 3500 mAh battery.
For some Farking reason, if the battery is under 50% and I get a call. It will RANDOMLY beep LOW BATTERY and turn off, in the middle of the farking call!!!
You turn it back on and it'll have 40+ % charge left!!!
AHHHHH!!!!!
After watching the 25 how to videos, I fixed almost everything that pissed me off, but this one thing drives me bonkers!!!!

I think that's the battery. Is its a yoo-bao from china (cheapie) or a good brand from a reputable source(sedio)? I have that problem with all the cheapies I bought on ebay.
Sent from my SPH-D700 using XDA App

It's not just the battery. My stock phone and rom does it too when the battery gets to 15%. When it reboots it has 20 or 30%.
This phone should never have been released with such a serious bug.
Sent from my SPH-D700 using XDA App

For "such a serious bug" it doesn't seem like many of us have it... I can keep a call all the way to 0%...did it a few minutes ago. Have you tried calibrating the battery stats?
Sent from my SPH-D700 using XDA Premium App

Now I dont normally let my phone get down to 0% but yeah i know i've gone WAYYYYYYY past even 10% and the phone hasn't done this. Stock battery not extended.
Kcarpenter said:
For "such a serious bug" it doesn't seem like many of us have it... I can keep a call all the way to 0%...did it a few minutes ago. Have you tried calibrating the battery stats?
Sent from my SPH-D700 using XDA Premium App
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it's a cheapy battery.
However, it's also a bug somewhere in some software...
If it hits 15% when u are NOT on a call, the phone doesn't shut off. It's only when you're actually talking that it does it.
I'm surprised to hear STOCK people saying it happens to them... When I had my phone stock it didn't do this. I assumed it was a ROM issue.

I would try calibrating... I believe there's an actual app in the market to do everything for you. I'm fairly certain its free, so ill post a link, but if its not, I apologize, and well get a mod to take it out.
http://db.tt/NaGV1TB

J3ff said:
I assumed it was a ROM issue.
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I love how people assume I sprinkle magic fail dust on my ROMs.
Charge to 100% with the device off and wipe battery stats in CWM.

Key word there, "Assumed"

Kcarpenter said:
For "such a serious bug" it doesn't seem like many of us have it... I can keep a call all the way to 0%...did it a few minutes ago. Have you tried calibrating the battery stats?
Sent from my SPH-D700 using XDA Premium App
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Yes. I've calibrated my battery. I have seen a couple threads on the issue. I have repeated the issue on several roms and modems. Happens every time i'm on a call and the battery gets to 15%. That makes it serious since it is a phone after all. What if I was talking to 911?
Sent from my SPH-D700 using XDA App

k0nane said:
I love how people assume I sprinkle magic fail dust on my ROMs.
Charge to 100% with the device off and wipe battery stats in CWM.
Click to expand...
Click to collapse
Not just YOUR rom, I've read that this is a problem on all different ROM's including the stock one!

J3ff said:
Not just YOUR rom, I've read that this is a problem on all different ROM's including the stock one!
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Right, but you said you assumed it was a ROM issue before you found out stock users had it.

k0nane said:
Right, but you said you assumed it was a ROM issue before you found out stock users had it.
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well even stock is a rom right?
What I'm hoping for is I can figure out what you guys are running that doesn't crash on you when the low battery beep happens.

I think this is a battery issue. I never had this problem with stock battery and it happened twice on cheap 3000 ma battery I bought. Returned the battery and got another one (same kind) and this one works fine. I think this is a manufacturing problem with cheap batteries. When you look at reviews of more expensive ones online, you never see anything about this problem.

I have found the solution! It turns out that our phones, much like a simple light bulb, just don't function when they don't have enough juice...
Since I can't modify a light bulb to magically require less power, the only solution I have found is to provide the specified power level. I have applied this same method to my phone - when the battery gets close to that magic threshold, all I do is - get ready for this - charge the phone again!
Seriously, though - everything takes power to operate, and a low battery can't put out the same current and voltage as a fully- or even half-charged battery. This isn't a bug, it's just a fact of life (with current technology, anyway). Who here complains when their almost-dead AA batteries can't power an Xbox 360 controller? Most of us just replace them with fresh ones (or charge them) and keep going.
Sent from my SPH-D700 using XDA App

styles420 said:
I have found the solution! It turns out that our phones, much like a simple light bulb, just don't function when they don't have enough juice...
Since I can't modify a light bulb to magically require less power, the only solution I have found is to provide the specified power level. I have applied this same method to my phone - when the battery gets close to that magic threshold, all I do is - get ready for this - charge the phone again!
Seriously, though - everything takes power to operate, and a low battery can't put out the same current and voltage as a fully- or even half-charged battery. This isn't a bug, it's just a fact of life (with current technology, anyway). Who here complains when their almost-dead AA batteries can't power an Xbox 360 controller? Most of us just replace them with fresh ones (or charge them) and keep going.
Sent from my SPH-D700 using XDA App
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This! Cheap batteries are never worth the money. I bought some cheap chinese rechargeable packs for my 360 controllers... they ALWAYS show low charge even if I just charged to full. Same deal with cheap chinese cell phone batteries.
I am sure the battery calibration is way off with one of the cheapies.

styles420 said:
I have found the solution! It turns out that our phones, much like a simple light bulb, just don't function when they don't have enough juice...
Since I can't modify a light bulb to magically require less power, the only solution I have found is to provide the specified power level. I have applied this same method to my phone - when the battery gets close to that magic threshold, all I do is - get ready for this - charge the phone again!
Seriously, though - everything takes power to operate, and a low battery can't put out the same current and voltage as a fully- or even half-charged battery. This isn't a bug, it's just a fact of life (with current technology, anyway). Who here complains when their almost-dead AA batteries can't power an Xbox 360 controller? Most of us just replace them with fresh ones (or charge them) and keep going.
Sent from my SPH-D700 using XDA App
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Ok Mr. Smarty pants. You are not understanding the problem. It happens with the stock battery too.
The SECOND you hit 15% while on the phone and get the battery low warning, the phone turns off, MID CALL. You turn the phone back on and it will last hours, even on the stock battery.
If it hits 15% without being on a call, it does not shut down.
That is the real problem here.

This has happened to me once , what could be the cause ? Defective phone or software?

J3ff said:
Ok Mr. Smarty pants. You are not understanding the problem. It happens with the stock battery too.
The SECOND you hit 15% while on the phone and get the battery low warning, the phone turns off, MID CALL.
If it hits 15% without being on a call, it does not shut down.
That is the real problem here.
Click to expand...
Click to collapse
You mean just like a 360 controller can have enough juice to turn on, but not enough to actually play? Or how a flashlight will be too dim to be worth it when the batteries get low?
Would it be better if the battery ran like a champ right up to the second that it shuts off without warning? That would fix your problem - no notification when the battery is low (the sudden shut off can't be avoided until we find an unlimited energy source small enough to fit in our phones)
Your expectations are unrealistic. Just sayin'...
Sent from my SPH-D700 using XDA App

J3ff, it's likely the cheap battery. Here's why:
Charge level is a simple linear voltage function. Our phones consider 4.2V to be full charge (100%), and empty to be around 3.6V (0%). The voltage drops roughly linearly between these two values as charge is consumed.
The kicker is this: The voltage seen at the battery terminals is also affected by the interaction between the internal resistance of the battery and the instantaneous load, or current draw. For electronics buffs, this is the classic V=IR, and what happens is that the voltage on the battery will drop by IR in addition to it's unloaded voltage level due to whatever the stored charge state is.
Good quality batteries have a very low internal resistance, and will not drop much voltage due to an increased load. Crappy batteries are just the opposite, and even though they do carry the charge storage (most of the time) advertised, they are only suitable for low load applications.
What's happening is you have a battery with a horribly high internal R. When you make a phone call, the load increases A LOT -- transmit power goes way up. This if why phones get hot when talking on them -- they really suck the juice.
As a consequence, because of the high resistance, voltage from the battery takes a nosedive. At an "idle" reading of 50% (3.9V, thereabouts) you're probably dropping more than 0.3V when the load goes up during a call, the phone panics, and shuts down to protect the battery (LiIon doesn't like to be discharged below 3.3V, and can be damaged).
When you reboot, the high load is gone, so the voltage shows higher again, reflecting the fact that there is truly still plenty of charge stored and available. The battery simply can't handle gulps, but only slow sipping.
High internal R is one of the most common reject reasons from mfgs, and those batts are sold on the cheap to dealers and distributors in a secondary market. Honest ones then resell into appropriate application spaces where low-current is all that is needed. Most, however, are not that scrupulous, and sell right back to the same market, leaving behind puzzled and unhappy customers.
Sent from my mind using telepathitalk

Critical battery temperature

Hey. Does someone you know, what is the highest (read: critical) battery and HW temperature in this phone? I am a little bit scared when I'm getting even 55*C on battery when I am using it as a navigation connected to charger in a car. I know it's too high because when it's heating over 49*C it stops charging. My question is how dangerous is such high temperature for HW and Battery? Is it normal behavior?

I never had such high temperatures, and I live on a hot country (Brazil). Try to check apps running in background, or, if you are using 3G and charger, it can get really hot. But I think it's normal, since my phone reaches 45ºC while charging, and I don't use 3G.

with 3g my phone gets crazy hot. i once left it on overnight (it didnt go to sleep) and when i woke up it felt dangerously hot, musta been 50deg or something
otherwise, with wifi it just gets warm... still worrying though, considering none of my other portable devices have ever gotten this hot before... just shows where all of the battery life goes to! :S
i dont think its the battery getting hot though, it must be the cell chip. my batt temps are usually pretty low, and the batt itself doesnt seem to get hot. its just the panel above the battery that warms up

My phone got so high temperature (55*C) when I was using navigation. Moreover it was pluged to the car charger (but wasn't charging because of high temperature) and mounted to the window in hot sunny day. And I'd like to know how dangerous is such high temp. for the device.

I wonder if we have dud phones? my battery life sucks ass... bare able on wifi, but **** with 3g

Agree with scott. With prolonged use my battery doesnt heat up, just the panel above the battery (where the camera is)
And my battery life sucks too. Gotta keep it charged in the car for even short (30 min) trips with navigation
Sent from my MotoA953 using XDA App

Try checking the manual (if there is) for operating temperatures etc.
I'm not exactly sure of how it'll affect the phone but it poses health problems due to higher radiations.
Try preventing this by ensuring all other (running) apps that you don't need are closed by using a task killer and all connectivity stuffs (eg. bluetooth, data sync) ESPECIALLY THE BACKGROUND DATA if you don't need it. Also, if possible try to refrain from covering the back panel (mainly the area near the camera) and allow ventilation to let it cool so it won't overheat.
What else I do is leaving the keyboard opened so there's even more surface area for it to cool.
The problem isn't just about damage, but that you don't want to be holding hot metal.
Yes it sucks but its a price to pay for such high specs packed in such a tiny casing.
My friend who owns Samsung Galaxy II has his phone heating up even more frequently and quickly, so we're not the only ones

Its annoying because we know its avoidable and shouldnt have been allowed in the final design by motorola

I've never seen such high temperatures with my M 2.
Highest was 47ºC while charging and playing a game. It usually sits around 35-36ºC idle, and 40-42º during games.

scottyn said:
I wonder if we have dud phones? my battery life sucks ass... bare able on wifi, but **** with 3g
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newbietown said:
And my battery life sucks too. Gotta keep it charged in the car for even short (30 min) trips with navigation
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That's normal guys... Every device dying in a "few minutes" with 3G. And U know what? From my last 3 devices which I have been using to surf in the Internet with 3G (Moto RIZR Z8, Nokia N86, Moto Milestone 2), MM2 lasts the longest.
newbietown said:
Agree with scott. With prolonged use my battery doesnt heat up, just the panel above the battery (where the camera is)
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Click to collapse
That's right, but every app just showing the battery temperature

Damn..
Yesterday my milestone 2 became hotter as ever, just above the battery (where the camera is, like newbietown). First I turned it off, but it stayed hot even then. After I removed the battery it became cool again.
But! Now my MS2 is completely dead...
It's really not turning on again, and charging is really weird (irregular flashin led). And my warranty is void because of me installing argen2stone I guess ..

Well, just flash a stock rom and they'll never know...

My phone is not recognized on my computer using USB . Can I still use rsd lite?

First get to bootloader mode: Power + Volume Up (or down) + Camera
If battery is too low you'll need to buy a relacement or a external charger.
Sent from my Milestone 2 XDA App

Try taking it to warranty. Argen2Stone is so lightly modded, maybe they won't mind it. Anyway, you have nothing to lose now. And this really looks like a HW problem, not SW
Sent from my A953

Beginning of next week I will hand it in for warranty. I think it has something to do with the power circuit in the phone. Sometime i've used HTC chargers (1A) instead of the motorola charger (0,85A).. That could be the cause Hopefully they cannot see that.

I don't think that's a problem. I always use a Nokia charger, I find the original charger too short, the Nokia has a good lenght. And I never had problems with overheating. Also, 1A is the maximum current that the charger can provide, not the nominal [email protected] anytime
Rocking with my M2 and XDA app

Phone restarts when the led flashlight is on for 60 seconds?

On every rom I have used, when I'm outside in a pitch black situation and I need my flashlight on my phone. When I leave it on for more than 60 seconds, the phone automatically restarts. I suppose because the LED gets too hot? This is on Torch bright widget or widgetsoid flashlight using method 2 for led. However I'm fairly sure that using heart rate monitor app in the market the phone can stay on with the flashlight for more than 60 seconds. I'm going to test this now. This is weird since my HTC HD2 could leave the led flashlight on for hours if I wanted. Well I never had it on for more than say 20 minutes but it worked and the phone never restarted. Any help would be great, thanks!
By the way this happens on all roms including with all kernels and all radios.

I wouldn't leave it on for more than 10 seconds at a time. That is just plain stupid.

Damn I hate useless replies!
Sent from my MB860 using XDA Premium App

Ok try this out. You're going to burn out your LED and the reason it restarts is from the heat. When you take a pic in your camera app does the LED flash for 60 seconds? um no.... you need a flashlight? Get those small LED keychain ones.. how's that for useful? Use your head....

And tour HD2 does not have a Tegra 2 in it so perhaps why that one does not overheat. Either way you'll kill the LED. They aren't designed to be used like that.

I have the exact same problem on CM7 - was fine on my HD2 for a very long time too

At times I find myself needing a flashlight for a minute or 2 at times. The HD2's LED never overheated unless you left in death ray mode but I'm not sure since I can't remember ever having a problem ever. Just use regular brightness at a reduced continuous voltage therefore reducing heat production. That's not stupid to need my f*ing phone as a flashlight for a couple minutes when needed. LED's are very efficient and can take a hell of a beating, however they're efficient in nature so leaving it on may reduce it's life sure. But has anyone reported their cell phone led light going out? I have never heard of it so stop posting stupid idiotic comments. Posting dumb offensive comments makes you look stupid. You could respond with an intelligent response unleashing to the world your hidden genius. Instead you decide to do what you do best.
If anyone who may be having the same problem. I have found a solution to the problem. Downloading instant heart rate monitor will allow the light to stay on forever with no problems.
Later

Atrix_E said:
And tour HD2 does not have a Tegra 2 in it so perhaps why that one does not overheat. Either way you'll kill the LED. They aren't designed to be used like that.
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I'm sorry. I do understand you stating they aren't designed to do that. However I don't care what you think about cell phone led's. I asked a question therefore I would expect an answer. Not an electronic's lecture.

1chris89 said:
I'm sorry. I do understand you stating they aren't designed to do that. However I don't care what you think about cell phone led's. I asked a question therefore I would expect an answer. Not an electronic's lecture.
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That was my answer. Sorry that you do not like it. Why not troll on now about video playback on your HD2?

Had the same problem with widgetsoid.
Download Tiny Flashlight + LED from the marketplace. My 60 second reboot problem does not happen with this particular application. I am on stock at&t rom rooted.
Sent from my MB860 using XDA App

Atrix_E said:
That was my answer. Sorry that you do not like it. Why not troll on now about video playback on your HD2?
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Well my suggestion is to you. Next time you post a comment. Please take a moment to think about the question. So then you can give a helpful answer. Questions are meant to be answered, nothing more and nothing less.

jmaddr said:
Had the same problem with widgetsoid.
Download Tiny Flashlight + LED from the marketplace. My 60 second reboot problem does not happen with this particular application. I am on stock at&t rom rooted.
Sent from my MB860 using XDA App
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Thanks buddy! I will give that app a shot. As for the moment. Instant heart rate monitor from the market works wonderfully.

1chris89 said:
Well my suggestion is to you. Next time you post a comment. Please take a moment to think about the question. So then you can give a helpful answer. Questions are meant to be answered, nothing more and nothing less.
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Noted and thought about. Wouldn't change my answer.

First of all you don't have to be a flamer, second....you have no clue what your talking about. The led light is led ...led lights put out insanely low amounts of heat...which is why that technology has been incorporated into growing plants...not that it's good ti leave the led on for too long but I have uses the led flashlight for about 30 minutes before on my ATRIX, ya it gets a little warm but that's it. Yes it's possible to burn it out over time but you will be fine for short durations. Why do you think there are so many flashlight apps, if they really caused that much damage google would remove those apps from the market.
And im not talking out if my ass because I know quite a bit on the topic of led technology.
The possible reason for your phone rebooting is because a lot of the flashlight apps out there aren't compatable with the ATRIX for some reason, don't ask me why. You need to download "droidlight" from the market because it was developed for Motorola phones by Motorola ...then I doubt you will be rebooting
But please don't talk like your an expert on the subject and give false information to people because it just adds to confusion for those that don't know. Im no expert on everything so I don't chime in on things I don't know about. Cheers
Sent from my MB860 using XDA Premium App

Atrix_E said:
That was my answer. Sorry that you do not like it. Why not troll on now about video playback on your HD2?
Click to expand...
Click to collapse
Also you should be suspended by mr.clown for a comment like that.
Sent from my MB860 using XDA Premium App

Tiny flashlight +led works great. Has a good widget as well. Don't recall having a timeout. Accidentally turned it on and fell asleep for hour. Woke up to a dead battery and a brown spot on the coffee table lol. Led was still kicking an hour later. I use mine all the time.
Sent from my MB860 using xda premium

Its more than likely the app, I have the same problem using Tesla led + widget locker + cm7. Disregard about damaging your LEDs, as long as the proper voltage is applied... they will never burn out... if its getting HOT(not warm) then I would be worried. LED lights do have a "lifespan" but generally exceed it, tremendously.
Sent from my MB860 using XDA Premium App

J-Roc said:
First of all you don't have to be a flamer, second....you have no clue what your talking about. The led light is led ...led lights put out insanely low amounts of heat...which is why that technology has been incorporated into growing plants...not that it's good ti leave the led on for too long but I have uses the led flashlight for about 30 minutes before on my ATRIX, ya it gets a little warm but that's it. Yes it's possible to burn it out over time but you will be fine for short durations. Why do you think there are so many flashlight apps, if they really caused that much damage google would remove those apps from the market.
And im not talking out if my ass because I know quite a bit on the topic of led technology.
The possible reason for your phone rebooting is because a lot of the flashlight apps out there aren't compatable with the ATRIX for some reason, don't ask me why. You need to download "droidlight" from the market because it was developed for Motorola phones by Motorola ...then I doubt you will be rebooting
But please don't talk like your an expert on the subject and give false information to people because it just adds to confusion for those that don't know. Im no expert on everything so I don't chime in on things I don't know about. Cheers
Sent from my MB860 using XDA Premium App
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I mean I don't really know anything about it, but if my LED light is on (for a flashlight) it get's noticeably hot within like 10 seconds...
I haven't quite had the same problem as the OP, but I was using TeslaLED with Widgetsoid (had a flashlight toggle in my rotary slider). I turned the screen on, and without unlocking used the flashlight like normal a few days ago, and had it on for 10+ seconds (after 10, my screen timed out like normal). I went to turn the screen on again though, and my entire phone froze - with the LED still on! I had to remove the battery...
I dunno all the technicalities of the LED, nor do I know if this was a freak accident and won't happen again (hopefully!). Might be a problem with TeslaLED/Widgetsoid, or maybe the screen shouldn't go off when the LED is on?
EDIT: Weird, I just tried it out again for fun, and it did in fact freeze my phone again lol. It did the exact same thing: turn on screen, turn on flashlight, use for like 10 seconds. Screen times out, flashlight flickers. Turn screen on, looks normal, but try to turn flashlight off, feel slight haptic feedback then froze.

Being an electrician by trade, I also specialize in luminaire devices, and tend to push LED devices over traditional flourescent, incandescent, halogen & HPS/MH lamps, for various reasons & applications. In fact LEDs last longer than the auxiliary components driving them .. which is why the still have a rated life span, many suppliers guarantee 12,000+ hours.
Sent from my MB860 using XDA Premium App

JaronBang said:
Its more than likely the app, I have the same problem using Tesla led + widget locker + cm7. Disregard about damaging your LEDs, as long as the proper voltage is applied... they will never burn out... if its getting HOT(not warm) then I would be worried. LED lights do have a "lifespan" but generally exceed it, tremendously.
Sent from my MB860 using XDA Premium App
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I don't know about everyone else but my led starts getting hot after only having it on for ~10 seconds. I try not to leave it on because of the heat. But yah I do leave it on for more than a minute all the time so it was probably the specific app causing a rare OS bug that caused it to crash.