So, some of us say that battery calibration is a must after flashing a ROM, while some never calibrate their batter, and few like to calibrate it once every 3-4 months. So it is my request to share your experience and recommendations.
This should be all you need:
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
sweetnsour said:
This should be all you need:
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
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Moreover, I've said it before and I'll say it again:
LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED. They have no "memory" effect. There's a charge circuit built into them that constantly monitors the voltage of the battery.
Attempting to calibrate a lithium ion battery will actually cause more wear in a shorter period of time than had you simply left it alone.
Sometimes when you flash ROM to ROM, old batterystats get left behind and mess up the battery. I had a glitch where it said the battery was full but the percentage was only at 92%. I'm not sure if this is a calibration glitch or just a kernel glitch, but calibrating it fixed it.
vj_dustin said:
i prefer wiping battery stats every flash instead of calibrating..
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This is actually one way to calibrate battery.
And calibration means the accurate way to read batt level by ROM, which by any means, cannot harm battery itself.
Not calibrating i had the surprise to wake up with more batt than i went to sleep with. Or, as said here, you can find out that the ROM is indicating you have less batt than you actually do. I goess that is the only thing that can go wrong. Anyways, i only calibrate when flashing new ROM or restorin a backup. And i use BatteryCalibration from market.
I don't know about you guys but everytime I flash a new rom I charge to 100%,reboot in recovery and wipe everything +battery stats.From time to time I prefer to do a calibration process.It's something that i found on lg-p500.ru and works for me.If anyone is interested how I calibrate my battery,look here .
PS*offline charging is required.
theanykey said:
Moreover, I've said it before and I'll say it again:
LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED. They have no "memory" effect. There's a charge circuit built into them that constantly monitors the voltage of the battery.
Attempting to calibrate a lithium ion battery will actually cause more wear in a shorter period of time than had you simply left it alone.
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Click to collapse
+1, just search Google, there a lot of explanations on how Li-ion works, found out myself in 2009.
Just read this for crying out-loud How to Prolong Lithium-based Batteries
Edit: just in case you don't get the +1.. ''LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED''
It is recommended that you DONT let your battery fully discharge, ever (it shortens its life) that is one of the reasons android notifies you have a low battery on 20%.
,i think we dont need to calibrate battery,fully discharging may affect battery,thats what ive read in the internet,ahm,by the way i have battery drain now,im using lewa OS m6 + roq XII,my betterbatterystats is ok,it is sleeping,hmm do i have battery drain?,i dont want to calibrate my battery,
Related
So i was browsing the Nexus S forum and Google+ and found an interesting post by one of Android/Google engineers : https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
Today's myth debunking:
"The battery indicator in the status/notification bar is a reflection of the batterystats.bin file in the data/system/ directory."
No, it does not.
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
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The whole idea of erasing that file having any effect on battery life is pure superstition and wishful thinking. The battery usage UI describes what your device has been doing that has been consuming battery; it doesn't change how the device is using the battery.
You want to "refresh" your battery stats? Charge your phone. When you unplug it again, the device knows it's at full charge (because the battery firmware says so), so the stats tracking treats that as a known milestone for reporting purposes.
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interesting!
I never wipe my batterystatus.bin till now!
I also think it doesn't doing anything but never knew that reson thanks for sharing
Does this mean that calliberating your battery has NO effect? I've seen so many devs themselves recommending it. (ofcourse I might be understanding this whole thing wrong)
myozeus said:
Does this mean that calliberating your battery has NO effect? I've seen so many devs themselves recommending it. (ofcourse I might be understanding this whole thing wrong)
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well, franciscofranco, our kernel 'god', didn't wipe batterystats.bin in his life before. however i always flash things on a full charge just in case
well when you calibrate the battery you only del this file.
this is a one second task
on a macbookpro the calibartion of the battery takes a long time.
so I would not really call this calibration at all.
Thanks for the info...
It'll save time for the people like me ;-)
i never used that option ever
i have very good battery life xd
cekuhnen said:
well when you calibrate the battery you only del this file.
this is a one second task
on a macbookpro the calibartion of the battery takes a long time.
so I would not really call this calibration at all.
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A Laptop battery has many cells, and, once a while, they get different charges among them, that's why you have to fully discharge your laptop battery once a month, to get them all to the same amount of charge.
Since our phones have one cell in their batterys, I don't know if it's really necessary to calibrate them.
myozeus said:
Does this mean that calliberating your battery has NO effect? I've seen so many devs themselves recommending it. (ofcourse I might be understanding this whole thing wrong)
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no. caliberating does have good effects. but caliberating does not mean deleting the file. it means charging full n emptying it full n charging full again...
harshdoshi25 said:
no. caliberating does have good effects. but caliberating does not mean deleting the file. it means charging full n emptying it full n charging full again...
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Actually, lithium ion batteries do not need calibration. Period.
The elements its comprised of have no "cell memory" and the battery firmware is hardcoded with the knowledge of what a full charge should be. Anytime you drain your battery past normal thresholds, it just puts extra wear and tear on the cells and reduces its ability to hold a full charge. By intentionally draining the battery in one sitting, all you're doing is stressing the battery and causing the problem you're trying to correct.
Long story short: Don't calibrate; it just hurts your battery.
Now, if you had a NiMH or an older LiPoly battery, I'd say go right ahead and try to calibrate them if they aren't holding a charge. These types of batteries do have "cell memory" and can often forget what a full charge is.
This information is widely available; it's no secret and I'm not making it up. You can search for yourself or read up on it at Battery University.
Tonhos said:
A Laptop battery has many cells, and, once a while, they get different charges among them, that's why you have to fully discharge your laptop battery once a month, to get them all to the same amount of charge.
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Actually, capacity drops in multi-cell batteries are typically due to voltage drops in certain cells. Draining the battery won't bring them back; you're only going to hurt the capacity of the rest of the cells. The only solution is to replace the defective cells.
Placebo placebo placebo, like I have always said. And like "theanykey" said, do not let lithium ion battery go completely empty, it just reduces battery lifespan. Seriously.
calibrating a Lithium ION battery does have some effect. 9x out of 10 there is some type of protection circuit on the battery that monitors its maximum charge, lowest charge, and wear levels and static values set by the manufacture.
Often times there can be a false wear level (wherein the wear gets set too high, usually caused by disconnecting the battery from a charge at like 95% or running the battery down to below 10%) and the charging circuitry within the battery WONT charge above that level.... to circumvent that improper wear level... a full charge, then FULL drain, then full charge is needed to properly reset those values and gain you extra battery life as the battery gets charged more.
nd4spdbh said:
calibrating a Lithium ION battery does have some effect. 9x out of 10 there is some type of protection circuit on the battery that monitors its maximum charge, lowest charge, and wear levels and static values set by the manufacture.
Often times there can be a false wear level (wherein the wear gets set too high, usually caused by disconnecting the battery from a charge at like 95% or running the battery down to below 10%) and the charging circuitry within the battery WONT charge above that level.... to circumvent that improper wear level... a full charge, then FULL drain, then full charge is needed to properly reset those values and gain you extra battery life as the battery gets charged more.
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Wear level has nothing to do with usable capacity and is not accounted for during charging. It's an arbitrary number that exists solely so people will replace their batteries sooner than necessary. If I recall, its not uncommon for wear level to be calculated by charge cycles. So, by "calibrating", you may actually worsen the wear level.
Also, you do realize that lithium ion batteries never fully discharge, right? Once they do, they're dead.
If you want a technique that actually increases short-term capacity(at the expense of ruining the battery's longevity), look up bump charging.
Hello,
I have ordered a new higher MAH battery for SGS II . I may be running stock ROM/Kernel or any of the custom AOSP ROM/Kernel.
During the kernel/ROM updates I have read that we dont usually need to clear the battery stats (since we are using the same existing battery).
However I will now be using the following battery :
http://www.amazon.com/gp/product/B0058SJ5Q4/ref=oh_o00_s01_i02_details
I need to how to properly calibrate the battery status so I can achieve full charge and maximum run time from this battery. Do I need to clear battery stats (from recovery mode) first and then insert the battery for first time usage or otherwise.
Have read a couple of posts on the subject however none provides a clear defined and fixed approach to the issue.
Any detailed guidance would be appreciated to be of benefit for the community in general.
Thanks.
=================================
Guess there are already enough methods and ways and some even debunk the myth that does the phone really needs any type of calibration/calibration apps at all or not.
Will try diving into it directly to see the effects myself if any.
You don't need to do anything other than sticking it in your phone.
When I got the 2000mah battery, I found my battery life to be equal or even slightly less than the stock one. I fully charged the battery, went to cwm and wiped battery stats, used battery completely till it died and then fully charged once again. It did seem to work as my battery life was much better.
oinkylicious said:
You don't need to do anything other than sticking it in your phone.
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He's right. Your battery calibrates itself with a full charging.
i read in a number of articles that you should reset/wipe your battery stats with CWM once your battery is at 100%, then switch off your phone and connect to a charger usb/plug until it will be charged to the actual 100% (usually only 1-2% at most)...
morespama2k said:
i read in a number of articles that you should reset/wipe your battery stats with CWM once your battery is at 100%, then switch off your phone and connect to a charger usb/plug until it will be charged to the actual 100% (usually only 1-2% at most)...
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All 100% wrong .
As it only wipes the stats that show and plays no part in calibration of the battery .
jje
JJEgan said:
All 100% wrong .
As it only wipes the stats that show and plays no part in calibration of the battery .
jje
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thnx for the correction, what do you think about "Battery Monitor Widget" app? Does its function to calibrate actually work?
Got intrigued by the issue...
No, it doesn't. Due to hardware 'limitations', battery apps can only provide a rough guess at best of charge remaining, discharge rate, etc on SGS2.
And genuine (made by Samsung) batteries don't have to be (and cannot be) calibrated. There's a fuel gauge chip in the battery which does this automatically.
Some people having issues with the battery report charging to 100%, removing the battery for a few minutes (so the fuel gauge chip doesn't have power for that time) & putting it back in the phone fixes their issues, but even that sounds like voodoo to me.
morespama2k said:
thnx for the correction, what do you think about "Battery Monitor Widget" app? Does its function to calibrate actually work?
Got intrigued by the issue...
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I want to use 2 batteries for travelling where I need a lot of juice for GPS.
One battery will be recharged with the S2. The other battery with an Anker wall charger. That's just a plan right now
I would like to know something concerning the best recharging strategy & battery "calibration" if you are using more than one battery:
If you are using only one battery it's quite simple how to calibrate the system.
But if you are using 2 batteries alternating then you can run into trouble, because the system is "calibrated" to the first battery.
That means if you are using battery1 until 0%. The system knows battery empty. I you are putting the 2nd - already recharged with a external wall charger - into the S2 then I wouldthink that the system is confused, because you didn't recharged it internal.
I want to use 2 batteries for travelling where I need a lot of juice for GPS.
So I would use the first battery until 0% and then change to the 2nd which is already recharged and then draining it until 0% and then again recharging.
The other strategy would be drain the first battery until 0%, then using the 2nd until the evening and then recharging both during the night. But I think this strategy will confuse the system.
Hope you understand the problem and I hope someone knows the best solution!
Thank you for your help!
JLowe said:
I want to use 2 batteries for travelling where I need a lot of juice for GPS.
One battery will be recharged with the S2. The other battery with an Anker wall charger. That's just a plan right now
I would like to know something concerning the best recharging strategy & battery "calibration" if you are using more than one battery:
If you are using only one battery it's quite simple how to calibrate the system.
But if you are using 2 batteries alternating then you can run into trouble, because the system is "calibrated" to the first battery.
That means if you are using battery1 until 0%. The system knows battery empty. I you are putting the 2nd - already recharged with a external wall charger - into the S2 then I wouldthink that the system is confused, because you didn't recharged it internal.
I want to use 2 batteries for travelling where I need a lot of juice for GPS.
So I would use the first battery until 0% and then change to the 2nd which is already recharged and then draining it until 0% and then again recharging.
The other strategy would be drain the first battery until 0%, then using the 2nd until the evening and then recharging both during the night. But I think this strategy will confuse the system.
Hope you understand the problem and I hope someone knows the best solution!
Thank you for your help!
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You don't need to calibrate the battery on the s2. The device should fix the percentage by itself. I would not recommend that you drain the battery fully to 0% as i have heard that it could damage the battery and use multiple cycles for the one you drain it. If you're running SiyahKernel you can try to reset the fuel chip in extweaks. Some say that it's a placebo but I seem to think that it works.
Hope that helps you out
Sent from my GT-I9100 using xda premium
You are over complicating this, just change the battery when it's flat and everything is ok.. I have 4 batteries, two Samsung and 2 off ebay, I always have one in the phone (obviously!), one charged in my pocket and one in the desktop charger.. Never have to worry about battery life
Sent from my GT-I9100 using XDA
The batteries should be charged just right if you use the wall charger, however sometimes when you charge in the phone, it might stop at 96% or somewhere around there, sometimes I off the phone and charge, gets it to 100%
You shouldn't worry about calibrating or whatever, new batteries with li-ion battery should be okay without calibration
Sent from my GT-I9100 using XDA
sounds inconvenient. better get a big battery replacement along with the new back cover
Sorry for upping this thread, but so (as traslate meaning) can you alternate a 1650 mAh stock battery and a 2000 mAh original Samsung battery without the needing of a wipe/recalibration?
Yes.
000zui said:
Sorry for upping this thread, but so (as traslate meaning) can you alternate a 1650 mAh stock battery and a 2000 mAh original Samsung battery without the needing of a wipe/recalibration?
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i've heard that calibrating is just a myth or something.. i have to batteries and i just change them whenever. (idk if that's bad or not), i don't wanna complicate it or something lol
Calibrating is a myth. Charge to 100% and enjoy.
Yes, no problem if you are using the same batteries like original 1650mah, just change the battery when empty and recharge
http://forum.xda-developers.com/showthread.php?p=28861605
Again, sorry to bring this thread back to life.. However I was wondering if anyone has had issues with using two batteries and having the "fuel gauge" chip fault on them. On my previous Galaxy S3 the chip that is dedicated to measuring battery stats, as found on many other phones, developed issues. This lead to the phone registering increases in battery percentage while off charger - basically the battery history graph at any given time had a 60% chance of going down and 40% of going up.
Could the use of two batteries caused the "fuel gauge" chip to malfunction?
Maybe temporarily. But charging it to full and/or resetting the fuel gauge running a kernel that supports same fixes that issue easily.
For some odd reason my battery icon shows 71%, but if I go to batt status it shows 62%. I flashed a diff batt mod and it changed to the new one, but it's still on 71%. Any ideas how I can make it show the correct status?
EVOme said:
For some odd reason my battery icon shows 71%, but if I go to batt status it shows 62%. I flashed a diff batt mod and it changed to the new one, but it's still on 71%. Any ideas how I can make it show the correct status?
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let the phone run till it dies and then charge it. that should reset the battery gauge.
Legacystar said:
let the phone run till it dies and then charge it. that should reset the battery gauge.
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Will try that....thanks!!!
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
Eric214 said:
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
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doing it constantly is bad, once will not effect it.
Eric214 said:
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
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Click to collapse
The statement about li-ion not being akin to ni-cad is correct. The rest is not.
No app is capable of battery calibration. The myth of wiping battery stats to calibrate the battery was clearly and concisely debunked a year and a half ago. Apps such as Battery Calibration ate pure snake oil, as they do not affect battery indication in any way, shape, or form. Additionally, there is absolutely no benefit to wiping battery stats after flashing a rom.
The fact of the matter, as verified by Battery University, is that a complete discharge/charge cycle is the only method of "calibration" available to an end user. By performing a single cycle, the charge and discharge flags are reset. Only a single cycle is needed and this is something that need be performed more than a few times a year, as it wail shorten the battery's serviceable lifespan.
Sent from my Nexus 7 using Tapatalk HD
Ummm I said if you want to reset you stats not actually calibrate your battery. That app to clear stats is called Battery Calibrator. Never did i say calibrate battery
Eric214 said:
Ummm I said if you want to reset you stats not actually calibrate your battery. That app to clear stats is called Battery Calibrator. Never did i say calibrate battery
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There is a far easier way to clear battery stats. Charge to phone to full or near full, and then unplug it. Voila! Regardless, wiping battery stats is not going to do anything for the op.
Sent from my SCH-I545 using Tapatalk 4 Beta
Well a friend of mine had the same issue with "stuck battery %" and that did the trick soooo just helping out with what worked for another is all. whatever
That actually didn't do the trick, as nothing relevant to reported charge is contained in the file that is wiped. While it may seem logical to ascribe the fix to a proximal act, it is actually a case of post hoc ergo propter hoc.
Sent from my SCH-I545 using Tapatalk 4 Beta
najaboy said:
There is a far easier way to clear battery stats. Charge to phone to full or near full, and then unplug it. Voila! Regardless, wiping battery stats is not going to do anything for the op.
Sent from my SCH-I545 using Tapatalk 4 Beta
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Neither did this. The battery calibrator app did nothing either. My phone is still showing a percent up top that is not what shows in settings/more/battery. More news, my phone showed this morning, after I unplugged it from all night charge, that it had been running on battery for 8 hours 2 minutes. The whole battery status is fubar somehow.
Just let the phone die, it works , and its easy
Legacystar said:
Just let the phone die, it works , and its easy
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That's the only thing I haven't tried. Will do that today. Will report.
Didn't work. Gonna have to dirty flash the ROM.
My S4 (2 months old) dies with the battery at 20%. After reboot (plugged in) it still says 20%. Why does that happen? It should say 0%!
Update
It seems that the battery gives an incorrect fake voltage sometimes. To correct that I turned the camer flash on, using a flashlight utility, and after a few seconds I clicked the quick start button in the battery calibration utility you can access dialing *#0228#.
Now it show 11% that should almost be correct, and it's now charging. I am charging it in slow mode at 500mA just to give it a proper charge.
I'll update you as soon as I have results.
Second Update
Nothing. I think the battery is broken.
It dies at about 20%-30% and when the phone restarts, plugged in, it says it's 20%.
of course in most cases I will not do this trick but for battery recalibration since my phone battery indicator is totally a joke
I wanna give it a shot just once but I am worried because somebody says it will harm the battery life or even worse, let it dead(neither turned on nor charged). and many people also swear by completely discharging the battery all the way down and recharge it to 100% from time to time to reset the battery stat and have it work as it used to
so these two claims are contradictory each other so one of them is wrong.
please point out the right way for me. thanks
it likely won't kill the battery if it happens once (or occasionally), but i don't think it is recommended to do this regularly.
battery indicators are never perfect.
First of all, completely draining your battery could damage your phone and would reduce your battery lifespan. I recommend you to stop using the phone when the battery drops to 5-15%.
And battery calibration is 100% myth. Battery calibration just removes batterystats.bin and re-generate a new one. Android does the same once our device is fully charged.
Sent from my ASUS_Z00A using XDA Labs
krasCGQ said:
First of all, completely draining your battery could damage your phone and would reduce your battery lifespan. I recommend you to stop using the phone when the battery drops to 5-15%.
And battery calibration is 100% myth. Battery calibration just removes batterystats.bin and re-generate a new one. Android does the same once our device is fully charged.
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Click to collapse
well you're true but not all about the battery calibration,there another method which work and not a myth.the method is by charging upto the devices's limit voltage it can hold,you may have seen about "please charge your device 10 minutes more" its actually calibrating the phone's battery.but dont too overcharge it,it may get damaged,so be careful.
Thunderoar said:
the method is by charging upto the devices's limit voltage it can hold,you may have seen about "please charge your device 10 minutes more" its actually calibrating the phone's battery.but dont too overcharge it,it may get damaged,so be careful.
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You mean trickle charging? It's for stabilize battery's voltage.
Sent from my ASUS_Z00A using XDA Labs