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.
Click to expand...
Click to collapse
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)...
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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...
Click to expand...
Click to collapse
Related
So what exactly is the correct way to recondition your battery after installing a new rom? I have been following the Bionix version of recondition below
1. Charge phone completely, leave plugged into power
2. Boot into recovery
3. Wipe battery stats
4. Reboot
5. Remove power cable
6. Drain that sucker all the way
7. Recharge fully
But i see there is some discussion on the proper way, and this one ruining your battery life. What is the actual correct way then?
That's the method I used a few weeks ago. Can't say there was any noticeable improvement, but I've never read that it was the wrong way....
mystycs said:
So what exactly is the correct way to recondition your battery after installing a new rom? I have been following the Bionix version of recondition below
1. Charge phone completely, leave plugged into power
2. Boot into recovery
3. Wipe battery stats
4. Reboot
5. Remove power cable
6. Drain that sucker all the way
7. Recharge fully
But i see there is some discussion on the proper way, and this one ruining your battery life. What is the actual correct way then?
Click to expand...
Click to collapse
Please read THIS --> http://forum.xda-developers.com/showthread.php?t=877597
..... And / Or .....
http://lmgtfy.com/?q=lithium-ion+deep+cycle
T313C0mun1s7 said:
Please read THIS --> http://forum.xda-developers.com/showthread.php?t=877597
..... And / Or .....
http://lmgtfy.com/?q=lithium-ion+deep+cycle
Click to expand...
Click to collapse
So in all essence... Dont do it! Haha then what is the point of wipe battery stats? Should i still at least wipe it at 100 percent after its charged, and then just use it normally.
mystycs said:
So in all essence... Dont do it! Haha then what is the point of wipe battery stats? Should i still at least wipe it at 100 percent after its charged, and then just use it normally.
Click to expand...
Click to collapse
The "point" of it is just to get the software to know the upper and lower limits of the battery to it can more accurately determine its current level. It learns the battery level and becomes more accurate over time, but many here flash new ROMs too frequently for it to get the chance. Just use your phone and don't worry about the battery, you will be fine. Leave it on all the time, even at night. Charge it when ever you are idle for any length of time and over night. You can not over charge it and it does not have a memory, but you can certainly shorten its lifespan by deep cycling it. If you think the battery meter is really way off what it should be then clear it first thing in the morning after it has been charging. Also, don't be surprised if you rarely or never see 100%. This is the normal way the charger keeps heat buildup from killing the battery. 97% to 99% after a charge is fine.
Thanks T313C0mun1s7, that's the most sensible advice about the battery I've read in awhile.
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
Click to expand...
Click to collapse
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..
Click to expand...
Click to collapse
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.
Click to expand...
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,
Hi everyone, I'm a newbie Android user. Currently I'm using:
DEVICE: Samsung Galaxy S3 GT-i9300
ROM: Android Revolution HD 14.0
KERNEL: Phenomenal 4.0 Medium
I've got battery problem after flashing both ROM and Kernel. I read in the both thread that they (supposed to) have excellent battery life. And there is also a thread about calibrating battery after flashing ROM/Kernel.
I lost 10% battery/hour , medium usage for Twitter(Tweakdeck) and XDA Forum ONLY...
I've done this step to calibrate:
1. Charge until 100% and 0mAh (Current Widget)
2. Wipe battery stats in Recovery Mode
Does the battery completely calibrated? Or I have to use it until 0% / 2% and charge it until 100% again? Am I missing some steps?
Thanks in advance everyone, happy Sunday and may God bless you
Sent from my GT-I9300 using xda app-developers app
Above is nonsense battery re calibrates itself with use .
Wiping battery stats does nothing to battery life .
See millions of battery posts .
Run Better Battery Stats to check for wakelocks .
jje
JJEgan said:
Above is nonsense battery re calibrates itself with use .
Wiping battery stats does nothing to battery life .
See millions of battery posts .
Run Better Battery Stats to check for wakelocks .
jje
Click to expand...
Click to collapse
+1
No need for battery calibration, the android system manages it itself while your charging your phone.
JJEgan said:
Above is nonsense battery re calibrates itself with use .
Wiping battery stats does nothing to battery life .
See millions of battery posts .
Run Better Battery Stats to check for wakelocks .
jje
Click to expand...
Click to collapse
4official said:
+1
No need for battery calibration, the android system manages it itself while your charging your phone.
Click to expand...
Click to collapse
Okay then, thanks Senior! I'll be using BetterBatteryStats after fully charged to 100% :victory:
It is good practice to let the battery hit zero and recharge fully every now and then, but this applies to all Li-Ion cells. I've had batteries last me years with reasonable capacity thanks to periodical full cycles. Otherwise yeah, the actual specifics is automatic.
nailerr said:
It is good practice to let the battery hit zero and recharge fully every now and then, but this applies to all Li-Ion cells. I've had batteries last me years with reasonable capacity thanks to periodical full cycles. Otherwise yeah, the actual specifics is automatic.
Click to expand...
Click to collapse
Total and dangerous rubbish a fully drained battery will not last as long as one that is never drained .
jje
nailerr said:
It is good practice to let the battery hit zero and recharge fully every now and then, but this applies to all Li-Ion cells. I've had batteries last me years with reasonable capacity thanks to periodical full cycles. Otherwise yeah, the actual specifics is automatic.
Click to expand...
Click to collapse
JJEgan said:
Total and dangerous rubbish a fully drained battery will not last as long as one that is never drained .
jje
Click to expand...
Click to collapse
L-ION batteries never reach 0% or 100%. Even when your phone dies and won't come on, the battery isn't at 0%. When you leave your phone on for hours after it is full, it still isn't at 100%...
I have seen lots of threads about people complaining about very poor battery life after flashing roms. Sometimes battery charges to 100% quickly and discharges very quickly.
So, these are the solutions. These solutions are IN ORDER. If the first one has no effect, then try the next one. If the second one doesn't work, then try the third one.
Now-
1) Try reflashing your ROM.
2) If reflashing your current ROM doesn't work, that probably means the ROM itself has poor battery life and you should change it. Stock ROM's have the best battery life.
3) If you are on stock ROM and still having problems, switch off your phone, take off the back cover and remove the battery. If the battery is swollen or the shaped weirdly, this means your battery is dead and almost useless. You need to buy a new one.
I recommend buying only stock batteries manufactured by Samsung because other batteries can be fake, incompatible, or just used batteries sold to you. Don't buy anything else unless you're absolutely sure of what you're doing.
Hopefully I helped.
Re: Solutions to Battery Problems[Newbie Friendly]
General tips for saving your battery-
1) Switch off mobile data whenever you're not using the internet.
2) Change your wifi sleep policy. This can be done by going to wifi settings, pressing menu button and then select advanced.
You can change your sleep policy so that your wifi sleeps when the screen is off.
3) Decrease your brightness! Your screen is responsible for most of the battery drain. Increase your brightness only when you are in bright sunlight or when you're watching videos etc.
4) Switch off GPS. Keeping it on all the time also drains a lot of battery.
5) There is an app called 'Greenify' which hibernates the apps running in the background. This app has increased my battery life. Here a link https://play.google.com/store/apps/...e=google&utm_medium=organic&utm_term=greenify
6) Don't charge your phone when it's at 70%. Wait till it is between 20-30% and then charge it continuously till it reaches 100%.
7) Let your battery completely discharge once every month.
8) Don't use task killers. They use more battery life than they save.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
10) If you use a Bluetooth headset, switch off Bluetooth whenever not in use.
11) Using setCPU profiles. This is one of the most effective ways of saving battery. You all know about overclocking, but do you know about underclocking or undervolting? Using profiles, You decrease the clock speed of your CPU when certain conditions are met. These profiles can be on the basis of time, screen off/on, battery etc. So when my screen is off, it automatically reduces the clockspeed which saves battery
chalak said:
General tips for saving your battery-
1) Switch off mobile data whenever you're not using the internet.
2) Change your wifi sleep policy. This can be done by going to wifi settings, pressing menu button and then select advanced.
You can change your sleep policy so that your wifi sleeps when the screen is off.
3) Decrease your brightness! Your screen is responsible for most of the battery drain. Increase your brightness only when you are in bright sunlight or when you're watching videos etc.
4) Switch off GPS. Keeping it on all the time also drains a lot of battery.
5) There is an app called 'Greenify' which hibernates the apps running in the background. This app has increased my battery life. Here a link https://play.google.com/store/apps/...e=google&utm_medium=organic&utm_term=greenify
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
7) Let your battery completely discharge once every month.
8) Don't use task killers. They use more battery life than they save.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
10) If you use a Bluetooth headset, switch off Bluetooth whenever not in use.
Using these tips, I have gotten almost 2 days of battery life on stock Roms and a whole day of battery life on custom roms like CM10.1 and CM7
If you have your own battery saving tips, please share and help expand this list.
Click to expand...
Click to collapse
I'm interested in the greenify app, the only problem is that it does not support stock gingerbread which can give the most juice. Do you have any other recommendations of similar apps?
stevenkyk said:
I'm interested in the greenify app, the only problem is that it does not support stock gingerbread which can give the most juice. Do you have any other recommendations of similar apps?
Click to expand...
Click to collapse
Greenify is a unique app and I am yet to come across a similar app.
You can try this one but it is paid - https://play.google.com/store/apps/details?id=com.elsdoerfer.android.autostarts
Sent from my pet - Megatron™
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
Are you sure about these? Because I've read that phones only take how much ever charge that they need, so charging overnight isn't a problem. And i've also heard that letting the battery charge fall below 40% actually reduces the life over time.
Ajayr64 said:
6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%.
9) NEVER charge your phone overnight. Your phone takes only about 4 hours to charge. Overcharging reduces your battery life
Are you sure about these? Because I've read that phones only take how much ever charge that they need, so charging overnight isn't a problem. And i've also heard that letting the battery charge fall below 40% actually reduces the life over time.
Click to expand...
Click to collapse
Yes, I am sure and it is something I have verified.
Overcharging kills the battery.
I saw a video once of an evo 3d. The battery almost completely died after it was charged for 3 days
And you should always charge only when your battery is low.
This will ensure longer battery life
chalak said:
Overcharging kills the battery.
Click to expand...
Click to collapse
Normally, when the battery is fully charged, the chip that controls the charging process reduce the current exponentially to 0: this avoid the overcharging.
I think all smartphones have the charging chip control integrated (an USB cable is simply a power source, not a battery charger), so I hope we can leave the phones on charge all the night without any problem. I do that always and never had problems.
Clearing battery stats has no effect whatsoever on battery life ...
Prawesome said:
Clearing battery stats has no effect whatsoever on battery life ...
Click to expand...
Click to collapse
Well, if you see again, I never mentioned that clearing battery stats saves battery. It is for those people whose phone charges very quickly with big increments, which typically happens after changing ROM's.
Sent from my pet - Megatron™
smanq said:
Normally, when the battery is fully charged, the chip that controls the charging process reduce the current exponentially to 0: this avoid the overcharging.
I think all smartphones have the charging chip control integrated (an USB cable is simply a power source, not a battery charger), so I hope we can leave the phones on charge all the night without any problem. I do that always and never had problems.
Click to expand...
Click to collapse
It seems both of us have read conflicting and contradicting things.
Sent from my pet - Megatron™
chalak said:
Well, if you see again, I never mentioned that clearing battery stats saves battery. It is for those people whose phone charges very quickly with big increments, which typically happens after changing ROM's.
Sent from my pet - Megatron™
Click to expand...
Click to collapse
Quoting Dianne Hacborn(Android Framework Engineer):
"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."
Its just a myth mate..
And also, it's a myth that you should let ur phone charge reach 10% or get fully discharged before charging. This actually leads to decrease in the battery life over time.
Prawesome said:
Quoting Dianne Hacborn(Android Framework Engineer):
"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."
Its just a myth mate..
Click to expand...
Click to collapse
I am aware of what you are saying and I fully agree.
But I have never mentioned that clearing battery stats increases battery life!
Tips to increase battery life are in the 2nd post. I simply said that if you clear your battery stats, UI will show you battery which is more accurate to the actual battery level.
Why are you arguing over something I never said?
Sent from my pet - Megatron™
Ajayr64 said:
And also, it's a myth that you should let ur phone charge reach 10% or get fully discharged before charging. This actually leads to decrease in the battery life over time.
Click to expand...
Click to collapse
Think of your battery as a person working out and charging is like taking rest. If the person's ability is to do 100 reps yet he takes rest after only 60 reps and keeps doing that continuously, he won't be able to do 100 reps after a few weeks!
Look at the logic mate.
Sent from my pet - Megatron™
chalak said:
I am aware of what you are saying and I fully agree.
But I have never mentioned that clearing battery stats increases battery life!
Tips to increase battery life are in the 2nd post. I simply said that if you clear your battery stats, UI will show you battery which is more accurate to the actual battery level.
Why are you arguing over something I never said?
Sent from my pet - Megatron™
Click to expand...
Click to collapse
I am not arguing :/
I am just trying to help make your guide more Informative. Read what I have put in bold letters mate. It doesn't affect the battery level shown to you
Prawesome said:
I am not arguing :/
I am just trying to help make your guide more Informative. Read what I have put in bold letters mate. It doesn't affect the battery level shown to you
Click to expand...
Click to collapse
Sorry if I sounded rude.
And thank you for your advice.
Sent from my pet - Megatron™
Updated
Sent from my pet - Megatron™
(I was Chalak)
Thanks for tips
You misunderstood me :'D
Clearing battery stats does not:
Affect battery life
Affect the battery level displayed to you
The only thing it does is, it wipes the history of battery consumption by each app. I am talking about the battery consumption by each app shown to you in Settings>About phone. If you clear the battery stats.bin file, the only thing that geta erased is this
Prawesome said:
You misunderstood me :'D
Clearing battery stats does not:
Affect battery life
Affect the battery level displayed to you
The only thing it does is, it wipes the history of battery consumption by each app. I am talking about the battery consumption by each app shown to you in Settings>About phone. If you clear the battery stats.bin file, the only thing that geta erased is this
Click to expand...
Click to collapse
This! Anything about wiping battery stats is not a myth anymore, so please stop misleading people,
Also "6) Don't charge your phone when it's at 40%. Wait till is below 10% and then charge it continuously till it reaches 100%."
Not true! Charging your battery around 50% is the most efficient way to keep lithium battery alive longer. A discharge once a month is also recommended.
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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/
Click to expand...
Click to collapse
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/
Click to expand...
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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%.