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Over the past month and a half that I have had an atrix I have noticed that my atrix has burnt me several times. I have it in my pocket and it just gets really hot. It doesnt seem to be the battery as the entire phone is very hot. This has been happening even before I rooted my phone. It burns me through the otter box. Im reluctant to take this back to at&t as i would have to unroot it. Are other people having this issue?
If its ridiculously hot, as it seems it is, thats not normal and you should return it ASAP. Also rooting would not affect heat output in any way.
One, wrong section.
Check a taskmanager when it starts running hot. Find out what is pulling so much processor load to create the heat.
I had this problem, took it back for replacement, then had the same problem on the new device. It turned out it was the Exchange sync causing the Motorola.services process to run constantly and kill the battery.
I solved it by changing the Exchange sync from push to every 15 minutes. I also do not use any sync with Google (mail, contacts, or calendar). My battery life is unbelievable now and the device stays cool 90% of the time.
Wasn't crossposting restricted in this forum?
Ha. Excessive heat. Buddy at least your phone doesn't have a aluminum battery door. Try touching that when your phone is being overclocked @ 1.5 ghz.
But essentially something that is syncing often is causing your phone to use the radio alot. And since its in your pocket there really isn't any airflow to cool it down hense the phone will generate heat.
Sent from my HTC HD2 using XDA App
Hi all!
I hope my post will help other people like myself that ware looking for information regarding this issue:
I installed TempMonitor and followed the teperateure of the device. There are 2 temperatures to measure: CPU and battery.
I will elaborate my findings:
1. CPU temp at rest without sync (push mail turned off) is 28-31C after a while (depends on the room temp).
In slight effort the CPU temp can get close to 50C but normaly is ~40-45C
It seems like the CPU temp is not that important and only when the CPU is running hot for ~10 minutes you feel the heat and it starts to get annoying. Notice that in this point a lot of battery juice is drawn.
2. Battery temp is also ~28C at rest. It gets up to 35C on ongoing effort. Since it is very large (1920mAh), you will feel the heat. I think that the battery is the main heat factor in the device and the CPU and graphic engine running in addition to the battery getting hot will cause the entire device to feel warm or even hot.
3. I noticed that at the beginning, one corner of the device (lower right) got REALLY hot and REALLY annoying at times. After 2 weeks, the heat spread became more bearable. I think it has something to do with the battery "setteling in".
4. Running apps that constantly check for updates and even push gmail, will cause your phone to run 1-2 degrees hotter and the more apps you add the hotter the phone will get at the resting state. Hence, when starting other apps it will get hotter and faster. even PowerControlPlus which is a very simple widget gets the deviec ~1 degree hotter on idle.
5. As the battery gets drained, it emits more heat. Try to charge your phones and not run battery draining apps when the battery is less than 30% or even 40% full.
I will comfort you all by telling you that I have a few friends with Galaxy S and Vibrants and their devices get hot too. A bit less on normal use like browsing but pretty much the same on 3D games and such.
I hope I helped because I was really frustrated by it for the first 2 weeks. I hope it will keep improving. I also purchased a case and hopefully it will help with the heat spreading around the phone - will update.
Please install Watchdog from the market to check if a process is acting crazy.
In my case it was 'Android media process' which ate 50% of all the processing power. There was not much of a performance drop since it occupied just one core.
Anyway Watchdog will give you an alert in case a process exceeds a certain percentage and from there you can google the problem or uninstall the app which is causing problems.
My Atrix 4G displayed a temperature of 37 degrees celsius. The highest till now I have seen. Could be higher though.
Its a dual core processor stop worrying about heat unless its hotter then 50c
Sent from my MB860 using Tapatalk
My Atrix has reached temperatures of 70 Degrees Celcius...
@OP: I think ur safe.
how you turn off the push email? someone can indicate your configuration? thx
http://goo.gl/OtRa1
When watching youtube I reach 42 degrees celcius in the battery and it literally burns my hand. Would maybe return it if I hadn't ordered it from Canada.
Transformer27 said:
Ha. Excessive heat. Buddy at least your phone doesn't have a aluminum battery door. Try touching that when your phone is being overclocked @ 1.5 ghz.
But essentially something that is syncing often is causing your phone to use the radio alot. And since its in your pocket there really isn't any airflow to cool it down hense the phone will generate heat.
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
thats because aluminium is a conducter which will let the heat out. plastic keeps it in. so if its hot i wonder why? xD
stratax said:
thats because aluminium is a conducter which will let the heat out. plastic keeps it in. so if its hot i wonder why? xD
Click to expand...
Click to collapse
[email protected] keeping it in. Who knew one just needed a gnat's-hair-thick sheet of plastic to insulate their house?
I'm having the same issue, but it's only coming from the bottom half of my atrix, and only since I installed a new LCD. I'm actually worried the heat will destroy my mem card and sim.
I've ordered a new LCD now, so hopefully that'll sort it out.
It's probably just apps constantly eating cpu. My problem is with the laptop dock though. The battery in it gets way too hot. It's the first piece of electronics I've had that actually made me reflex my hand away from the heat.
Sent from my MB860 using XDA Premium App
I get constant 60 degrees while using...
I am a heavy user may go for hours at a time...Gaming mainly...
While heavy gaming I get aroud 75 to 80 degrees.. I bloody burns my hand to a point i cant even hold it anymore...!
Are you sure? 80 degree ? My PC only 72 degree.What have you done with your atrix
Sent from my MB865 using xda premium
Hey everyone
my phone gets heated up itself. Not very hot but slightly hot and it gets cooled itself. What could be the reason or can it damage the phone.
Thanks in advance.
Sent from my LG-P500 using XDA App
Well, that sometimes happens to my LG P500, but I think it is normal.
Mine behaves the same way...
I think it becomes hot (warm we should say) mostly in 3G mode, especially when combined with tethering.
every smart phone heats up when doing a task for a continued amount of time. your phone will heat up while talking a call for more than 30 minutes, watching video (like a movie) downloading data via wifi, 3g and 2g. browsing the gallery for an extended amount of time.
but it is not the phone cpu that heats up. its the rapidly discharging battery.
lg p500 can heat up to a temperature of 55 degrees celcius while discharging and 44 while charging though the standard charger.
so dont worry, it is a normal phenomenon and the phone will not get damaged due to such heat.
Yh my p500 gets red hot if I use it a lot which is getting annoying
Our phones is really HOT.
Sent from my LG-P500 using XDA Premium App
My phone can get hot if I'm using my hotspot + charging.
its usual cause u r in "INDIA!!!" dats not a great place to use smatphone....
I also noticed that my P500 gets really hot when charging and when I video chat with yahoo messenger. the hot spot is somewhere where the google logo is.
nikhil4186 said:
every smart phone heats up when doing a task for a continued amount of time. your phone will heat up while talking a call for more than 30 minutes, watching video (like a movie) downloading data via wifi, 3g and 2g. browsing the gallery for an extended amount of time.
but it is not the phone cpu that heats up. its the rapidly discharging battery.
lg p500 can heat up to a temperature of 55 degrees celcius while discharging and 44 while charging though the standard charger.
so dont worry, it is a normal phenomenon and the phone will not get damaged due to such heat.
Click to expand...
Click to collapse
Well said. Thanks for the info
You can try with an other battery. If the problem persist, is an phone issue...
If is 'hot' as 'I cannot keep the phone in my hands' probably is a phone issue. If it is 'warm' is just like any android more or less. But as DeuxEx says, just try another battery if you can. They cost 3-5$ each in ebay.
/W
as all the above said, your being heated up is not unusual,
if you are overclocking, set a temperature profile
or take off the battery case and put it into the fridge for 3 minutes! (i really did this once )
hi,
i have SE x10i and i downloaded some apps in the market and my phone suddenly restarts... and i flash it on SE PC companion and its now ok
the problem is that when ever i charge the phone the battery heats up and then my phone also heats up and shuts down... i get the battery out for some few minutes to cool down and then it gets ok.. but because i want to charge the battery but still same problem..
what should i do??
regards,
red
Are you heavily using the phone (gaming, watching videos, streaming, surfing the net) while charging?
Install setcpu and use a temperature trigger of 50C (or what you want) to limit the cpu.
Mine is set for 768Mhz.
And if you are using it while its charging try not to cup the back of the phone, you trap the heat.
If it keeps shutdown when you charge, you should bring it to SE service. Maybe this is hardware problems.
Nucleus55 said:
hi,
i have SE x10i and i downloaded some apps in the market and my phone suddenly restarts... and i flash it on SE PC companion and its now ok
the problem is that when ever i charge the phone the battery heats up and then my phone also heats up and shuts down... i get the battery out for some few minutes to cool down and then it gets ok.. but because i want to charge the battery but still same problem..
what should i do??
regards,
red
Click to expand...
Click to collapse
switch from 3G to 2G
OmegaRED^ said:
switch from 3G to 2G
Click to expand...
Click to collapse
i already did that sir..
i also update the rom to GB but still the problem is the same..
when the cp heats up its restart automatically..
@all
where can i DL such apps that can normalize the cpu's temperature..
i cant charge normally because as what i have said
it heats up and shutsdown thee phone..
Aw man that sucks, keep in mind your battery life will get worse if its heated too much.
Sent from my X10 using XDA App
yeah really really sucks.. i cant normally charge with my charger
coz when the temperature rises it will stop charging ang the phone restarts or automatically off...
thats why i need your opinions! please..
i dont think this is a hardware problem because
this is brand new... and i dont use it agressively...
Nucleus55 said:
i dont think this is a hardware problem because
this is brand new... and i dont use it agressively...
Click to expand...
Click to collapse
Not all brand new devices are in perfect shape. There's always a factory defective one..
Try consulting your problem at any service center of S.E. or ask for a replacement. As you said its a brand new device it has warranty.
sent from my stock gb not rooted and no add ons.
Just want to
up
this thread
really need some
opinions and advice
whats the solution??
Hi Nucleus55,
Although i'm relatively new to xda, i'm also relatively "old" to h/w related problems, so here's is one piece of advise if you like.
As stated also from other member's previously "-- X10B --", if the phone's temp rises to a degree where it auto-reboots and stops charging, and if this occurs every single time, then you should probably replace it from your nearest SE shop. Especially if it is new and under warranty. As stated from "-- X10B --" there is always the possibility of a h/w error or in construction and/or design flaw in that specific model. You never know.
Personally, i got this "batterylife" widget (from market) which shows battery status and temp, and for me, when i charge my phone, it has never gone above 40 degrees Celsius while idle (charging only) and up to (MAX) 48 while under heavy stress during charging, like games, videos, etc.
I have never seen it gone to 50 degrees.
You could also do as previously stated by "kindred7", that is, install an application and set the max degree to 50 degrees, although i strongly recommend (this is always my personal opinion), when it comes to ALL electronics, to always keep them as cool as possible. If this is not possible, because you tend to stress it all the time either from games or videos, then you could find a better cooling solution, like maybe removing its cover while charging.
I have just tried it myself about a half an hour ago to see if there is any change in temp, and i have noticed that in my work space where the ambient temp is around 25 degrees, the phone while charging and uncovered, was stable at 38 degrees Celsius.
Also, if you a lot of functions ON like Wi-Fi, GPS, Bluetooth, then it is obvious that the phone temp will rise to its max. If so, then try to disable any things you don't need, not only while charging but always.
That's all that i can think of right now
this has happened to me after i updated my x10i to 2.3.3 .. the battery life has just got worse and sometimes while heavy use the battery temp rises very much.
Any Solution will be helpful.
Nucleus55 said:
hi,
i have SE x10i and i downloaded some apps in the market and my phone suddenly restarts... and i flash it on SE PC companion and its now ok
the problem is that when ever i charge the phone the battery heats up and then my phone also heats up and shuts down... i get the battery out for some few minutes to cool down and then it gets ok.. but because i want to charge the battery but still same problem..
what should i do??
regards,
red
Click to expand...
Click to collapse
From the symptoms you've listed I'm pretty sure you need a new battery due to the heat exposure.
When you are charging your phone make sure you have your screen off. I know this sounds stupid but I found it stopped my phone from overheating while charging
my battery is heating aswell
i upgraded and did not use my phone for 5 hrs ish and it was just on my table and then i smell smoke frome my phone and it was like my battery was a bbq
Aphex33 said:
From the symptoms you've listed I'm pretty sure you need a new battery due to the heat exposure.
Click to expand...
Click to collapse
yes i think this is the problem that i forgot.
i expose it to sunlight while we are drinking some beer with friends outside of our house . and
because i have some sms i grab my phone and damn it was so hot.
so i put my phone inside the house and after that it started to resart whenever the temp rises, or even i use a short period of time...
06bgoggin said:
When you are charging your phone make sure you have your screen off. I know this sounds stupid but I found it stopped my phone from overheating while charging
Click to expand...
Click to collapse
sir,
even when i shut down my phone and try to charge
when my phone starts to heat up
and suddenly it stops from charging
and the phone is very hot as well as the battery
ill try to replace battery, if still the same
maybe i will forcely go to the store that i bought my phone.
I have the same problem
maybe SE company should read all the negative feedbacks on there Phones...
and make some upgrades of this ****.
I charge my phone up to 100 percent and even on standby it goes to like 90 percent in about 3 hours and to about 80 in about 5 hours...is this normal....I don't believe this is a normal standby time for any phone...
also does the phone get extremely hot when using navigation without charging???? I get about 40 minutes of navigation and the battery is at 55 to 60 percent...is this normal for everyone???
I called HTC they said the phone should NEVER GET WARM OR HOT and getting that much battery life for navigation is just crazy!!!!...they said the only time the phone will get a little warm is when charging the phone, but never hot...just slightly warm.
also it is the phone itself that is getting hot not the battery.
defective unit???
seansk said:
I charge my phone up to 100 percent and even on standby it goes to like 90 percent in about 3 hours and to about 80 in about 5 hours...is this normal....I don't believe this is a normal standby time for any phone...
also does the phone get extremely hot when using navigation without charging???? I get about 40 minutes of navigation and the battery is at 55 to 60 percent...is this normal for everyone???
I called HTC they said the phone should NEVER GET WARM OR HOT and getting that much battery life for navigation is just crazy!!!!...they said the only time the phone will get a little warm is when charging the phone, but never hot...just slightly warm.
also it is the phone itself that is getting hot not the battery.
defective unit???
Click to expand...
Click to collapse
Rumor has it that the update to software version 1.36.531.6 addressed overheating issues. Not sure of the effect as I updated my phone out of the box. I've had my phone for 5 days now and have not had any overheating issues at all. I have not used the nav for any extended time yet, but keep in mind that it used the modem, gps and display so your batter will drain a lot quicker.
zPacKRat said:
Rumor has it that the update to software version 1.36.531.6 addressed overheating issues. Not sure of the effect as I updated my phone out of the box. I've had my phone for 5 days now and have not had any overheating issues at all. I have not used the nav for any extended time yet, but keep in mind that it used the modem, gps and display so your batter will drain a lot quicker.
Click to expand...
Click to collapse
ya I understand but 40 percent in 40 minutes....and it does overheat extremely....I updated to the latest software as well right when I got it.
seansk said:
ya I understand but 40 percent in 40 minutes....and it does overheat extremely....I updated to the latest software as well right when I got it.
Click to expand...
Click to collapse
I would try to exchange it then, I'm particular about 500-600 dollar devices.
seansk said:
I charge my phone up to 100 percent and even on standby it goes to like 90 percent in about 3 hours and to about 80 in about 5 hours...is this normal....I don't believe this is a normal standby time for any phone...
also does the phone get extremely hot when using navigation without charging???? I get about 40 minutes of navigation and the battery is at 55 to 60 percent...is this normal for everyone???
I called HTC they said the phone should NEVER GET WARM OR HOT and getting that much battery life for navigation is just crazy!!!!...they said the only time the phone will get a little warm is when charging the phone, but never hot...just slightly warm.
also it is the phone itself that is getting hot not the battery.
defective unit???
Click to expand...
Click to collapse
The other day my phone got hot - very hot - during a 1/2 hour conversation using a VoIp app (Viber). It reached 114.4 Fareinheit degree. At that point I was on Stock 1.36.531.6 (NOT .5 though)
Testing it again using the same VoIP app with the same length conversation on QuikSense 1.5.1. Temperature stayed at +/- 100 F
114 is a normal temp, phones dont have cooling fans like a pc.
celltimemb said:
114 is a normal temp, phones dont have cooling fans like a pc.
Click to expand...
Click to collapse
'Course I known that phone doesn't have a built-in cooling fan
Or maybe I should email HTC and suggested them to built-in an AC unit then ..
Would you kindly post some kind of a proof that 114F is a "normal" temp
Please enlighten me a bit since my phone normally showed temperature between 70's up to under 100's max - and I can proof that with screenshot
* 1st pic at 22nd row:
Baterry discharged at the rate of -1023mA = 82.2F
* 2nd pic - 5th row from bottom up:
Baterry charging at the rate of +862mA = 78.4F
* 7th pic - 25th row:
Baterry discharged at the rate of -1013mA = 80.9F
You could check your battery use for any offending apps that might be sapping your power
realitysconcierge said:
You could check your battery use for any offending apps that might be sapping your power
Click to expand...
Click to collapse
Thanks for the suggestion.
I did tried to narrowed down an individual app that may caused the high temp without succeed but the problem did not existed when using Xboarder's QuikSense 1.5.1 in the exact same situation/setting and I'm happy with that.
Just wanna share some experiences with others who may have the same issues though
zPacKRat said:
I would try to exchange it then, I'm particular about 500-600 dollar devices.
Click to expand...
Click to collapse
seems like I'm one of the few...I will be exchanging the phone...you are right...I did pay the entire price of the phone...no contract...so yea...will be exchanging it.
Mine overheats from time to time... I have not noticed a pattern.
The phone is a battery whore.
I work in front of a pc all day so it's manageble. With a monster screen and processing power, I expected it to suck.
I did notice a decline in overheating since the last update.
Sent from my HTC_Amaze_4G using XDA App
Battery and charging issues
I have an Amaze from Telus. The phone charged up fine and worked well with decent battery life. I am in the U.S. and now when I have fully charged the phone while its off and then turn it on the bootscreen loads but then the phone dies. Could it be the Supplied Charger or the USB Cable is not giving it enough of a charge? When I swapped out the included HTC battery with an Anker battery it powers up and works fine. Does anybody have any ideas? I have read that some of the Micro USB cables were problematic and didn't allow power to flow to the phone. I have also heard that the HTC power adapter also has had some problems as well.
I've heard several different opinions on this. Condition or not to Condition the battery.
Do we need to condition this thing?
How are you doing it?
What kind of results are you getting?
Thanks in advance.
Matt
Li-ion
The battery is lithium Ion so you really shouldn't have to from my understanding.
People do even tho is not necessary, for some reason I don't but after a few day battery has gotten better
Sent from my SGH-T999 using Tapatalk 2
I mentioned this earlier -- I know it's a li ion that shouldn't need conditioning but when I first got mine my battery life was absolutely horrible. I went through two full discharge/recharge cycles and it seems to be much better now.
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
The way it was when I first got it, I'd probably be at 40 or 50% right now, if not even lower.
I'm also running juice defender and have stopped using the gmail app because you can't set the sync interval on it. Instead I've been using the built in email app and have it set to sync every 30 minutes. Not sure if any of this is doing anything but my battery life is definitely better than when I first got the phone. At first it was so bad that I came very close to just returning the phone.
BonesHopkins said:
I mentioned this earlier -- I know it's a li ion that shouldn't need conditioning but when I first got mine my battery life was absolutely horrible. I went through two full discharge/recharge cycles and it seems to be much better now.
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
The way it was when I first got it, I'd probably be at 40 or 50% right now, if not even lower.
I'm also running juice defender and have stopped using the gmail app because you can't set the sync interval on it. Instead I've been using the built in email app and have it set to sync every 30 minutes. Not sure if any of this is doing anything but my battery life is definitely better than when I first got the phone. At first it was so bad that I came very close to just returning the phone.
Click to expand...
Click to collapse
That's true for me as well now that you mentioned it. First day, I got about 4 1/2 hours with it before i was down to 10%. I was shocked! Each day it has gotten a little better. Over the last 36 hours it has last a full days before a charge. It doesn't really make much sense to me that they are li-ion which shouldn't need conditioned but it seems that we do need to do this. A friend suggested I condition it when I got it and before I started heavily using it, I guess he was right.
Li-ion batteries don't need conditioned. Any signs of conditioning you see may be some sort of conditioning/learning of the OS.
Sent from my SPH-L710 using Tapatalk 2
mlin said:
Li-ion batteries don't need conditioned. Any signs of conditioning you see may be some sort of conditioning/learning of the OS.
Sent from my SPH-L710 using Tapatalk 2
Click to expand...
Click to collapse
What he said.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
BonesHopkins said:
Currently 11 hours on battery, 50 minutes screen on, played a couple of games, downloaded a couple of apps, 15 minutes of voice calls, and battery is at 80%.
Click to expand...
Click to collapse
See this kinda stuff freaks me out. I had one decent charge so far, had the phone a week, have been doing full discharge/charge the whole time. Sitting at 38% right now on 16 hours, about half of that was asleep with power save on (its been dropping 20-30% overnight) and only 48 minutes screen time. I dunno how long it should take to improve but it seems like its not taking this long for anyone else.
erikk said:
What he said.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries/
Click to expand...
Click to collapse
What they said.
This is a very informative site. I've quoted it's recommendations concerning the circuit in the battery that needs calibration before......
here's the link to that page there.....
http://batteryuniversity.com/learn/article/battery_calibration
codo27 said:
See this kinda stuff freaks me out. I had one decent charge so far, had the phone a week, have been doing full discharge/charge the whole time. Sitting at 38% right now on 16 hours, about half of that was asleep with power save on (its been dropping 20-30% overnight) and only 48 minutes screen time. I dunno how long it should take to improve but it seems like its not taking this long for anyone else.
Click to expand...
Click to collapse
How long do you usually sleep for???
Seriously though, 20 - 30% overnight sounds like a lot. I tested mine and it dropped about 8% in roughly 7 hours of zero use while I was sleeping. I think even that is a little excessive but I can live with it.
Have you tried running something like Juice Defender? It seems to have made a difference with mine. When I got my S3 last week it was about the same as yours. I did a couple of complete discharge/charge cycles, installed juice defender, and have been going into the task manager and app manager and turning off all the crap that doesn't turn off automatically. It has made a difference.
Oh, and I also did the APN trick to disable LTE. Not sure if that has made any difference but with everything combined the battery seems to be doing a lot better than it was at first.
Don't "they" say that you should not use task managers as they don't work well with the phones? I'm no expert here, so don't quote me, but my understanding is that the One S and Siii owe a lot of their excellent battery lives to their own internal task managing.
Correct me if I'm wrong here.
ickster said:
Don't "they" say that you should not use task managers as they don't work well with the phones? I'm no expert here, so don't quote me, but my understanding is that the One S and Siii owe a lot of their excellent battery lives to their own internal task managing.
Correct me if I'm wrong here.
Click to expand...
Click to collapse
The internal task managing is the reason you shouldn't use 3rd part task managers. That's the whole point. Android has done this since 2.0
Having said that, there's nothing inherently wrong with killing a task that is misbehaving... most things that say not to use task managers really mean to not (a) turn on auto task-killing, or (b) kill tasks across the board, albeit manually, under the false impression that freeing up RAM is a good thing.
When you guys say full discharge do you mean draining the battery till it shuts off or going down to 10%, I was under the impression that fully discharging would harm the battery.
MCKang25 said:
When you guys say full discharge do you mean draining the battery till it shuts off or going down to 10%, I was under the impression that fully discharging would harm the battery.
Click to expand...
Click to collapse
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
Click to expand...
Click to collapse
Doing this enough times has the potential to damage your battery. Leaving it at 2% - 5% will not make a difference in the "calibration" compared to completely killing the battery.
Killing the battery may work for you, but I want others to be aware of the potential of damaging the battery.
Just my 2cents for the day.
Here. Is a link to battery charging for Li-ion. I have another site that is great in explaining these things. I have a couple of R/C trucks and this info is great to know and have. The same applies. To our phones charge rates. I would hope that when a dev makes up or mods a kernel that they have a basic knowledge of charge rates and the rest of the equations. Foe our batteries this is literally. Life and death. It could also cause a phone to burst into flames. Especially. If we use after market batteries that have poor protection circuitry in them.
I will find the other link later and post it up here to give a possible better understanding of these things. But, try not to rely on me as I tend to forget things a lot. Car accidents will do that to you when you crush your skull. Any way, GIYF.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Sent from my Xoom using XDA
You basically only need to do the "calibration" once. And the phone has limits set that will neither undercharge nor overcharge them.
edit I think heat is your batteries worst enemy.
BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
Click to expand...
Click to collapse
This is the WORST thing you can do to a Li-Ion battery. I mean literally you can lose 10% of its life from doing this or even cause the battery to stop charging at all.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Li-ion should never be discharged too low, and there are several safeguards to prevent this from happening. The equipment cuts off when the battery discharges to about 3.0V/cell, stopping the current flow. If the discharge continues to about 2.70V/cell or lower, the battery’s protection circuit puts the battery into a sleep mode. This renders the pack unserviceable and a recharge with most chargers is not possible. To prevent a battery from falling asleep, apply a partial charge before a long storage period.
Click to expand...
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Seriously everyone should spend a couple hours on that site at some point. Half the information will probably be way over your head (or at least it was mine) but there's enough good information that even half of it is definitely worth learning.
Here is the other site that I was talking about. Though it is for R/C battery packs it should still grant a measure of understanding to the workings of these batteries.
http://www.rchelicopterfun.com/rc-lipo-batteries.html
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BonesHopkins said:
I discharged it till zero. Then I turned the phone on and let it shut off again. I did this until the phone wouldn't even try to turn on any more.
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Take into account though. These batteries have circuitry. Built into them to prevent you from truly discharging. It all the way. That doesn't mean that it can not discharge all the way. Things like humidity can play its roll in taking a Li-ion or Lipo battery past the kill zone point. If you know that you will not be using the battery for a good period of time or it is strictly an in case of an emergency battery. Place it into a plastic bag and suck out all of the air that you can and seal it. A zip lock bag works best. Place it in the refrigerator or freezer. There is very little moisture. In there. And what ever moisture makes its way in when you open the fridge. Or freezer will not have time to get into the zip lock bag. The lack of moisture slows the discharge process down especially in the summer. Also the chilling of the battery's chemical. Compounds slows the molecular interactions down. Its a helpful two fold process.
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