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You've probably heard about this before, its simple:
1. Charge your phone to 100%!!
2. Boot into recovery
3. Scroll to Advanced > wipe battery stats
And there you go!! I'm running xboarders quicksense 1.5.1 and now it has tremendous battery life.
I originally saw this method in mikes android revolution Rom post so thanks to him!
Sent from my HTC Amaze 4G using XDA App
You also want to let your phone die to 1% and charge it until full without any breaks and leave it plugged in for 20 mins after 100% that way it makes a new batterystats
Sent from my HTC_Amaze_4G using XDA App
Is this fact ? Is there any type of info to support how wiping battery stats actually works ?
Sent from my HTC_Amaze_4G using XDA App
nixxofugi said:
Is this fact ? Is there any type of info to support how wiping battery stats actually works ?
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
It's known as battery calibration. It is a fact. the who XDA universe uses this method, battery calibration app method or other variations of this method.
Wow I changed my Rom and did this again and my phone lasts sooooo Long!!!
Sent from my HTC Amaze 4G using XDA App
Teo032 said:
You also want to let your phone die to 1% and charge it until full without any breaks and leave it plugged in for 20 mins after 100% that way it makes a new batterystats
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
I've read alot and tried many methods in the past, and one thing I am conviced is that you don't really have to drain your battery completely before cycling. The dev of 'Battery Doctor' app says you need to go below 20%. I can acheive pretty much the same effect if I start from just below 50%.
The key is to keep the charger plugged in after you get the green light. 20min is probablly right, although I tend to keep it longer because I usually go to sleep when I cycle batteries.
over charging lithium ions is not a good idea...also you do not need to cycle lithium ion batteries as they contain no memory as the old ni-metal hydrdie and ni-cd. batteries..
.infact is is advised to charge you batter often and keep electrons moving in your lith ion battery as oposed to ni-cd which is better to let it fully charge and fully discharge.
Do not over charge or fully discharge a lithium ion battery...infact the high voltage stresses the battery further and shortens its life. also do not discharge you battery fully as this is also not good for it...with lithium ions it is good to charge as often as possible, to prevent erosion inside the battery...while doing this you must not use the device...so even if you charge it for 10 minutes its a good thing for the battery. do not use the phone while charging as this confuses the battery.
here's a good article, that explains everything completely http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
From what I have read so far, wiping battery stats simply erases the information in the battery usage screen. I don't see it having any benefits to how long the battery lasts even in my previous attempts to increase battery life.
Sent from my HTC_Amaze_4G using XDA App
nixxofugi said:
From what I have read so far, wiping battery stats simply erases the information in the battery usage screen. I don't see it having any benefits to how long the battery lasts even in my previous attempts to increase battery life.
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
I had a Desire and I did the battery wipe in recovery and to me my phone battery was outstanding....Lasting almost two days with moderate to heavy usage...
seansk said:
over charging lithium ions is not a good idea...also you do not need to cycle lithium ion batteries as they contain no memory as the old ni-metal hydrdie and ni-cd. batteries..
.infact is is advised to charge you batter often and keep electrons moving in your lith ion battery as oposed to ni-cd which is better to let it fully charge and fully discharge.
Do not over charge or fully discharge a lithium ion battery...infact the high voltage stresses the battery further and shortens its life. also do not discharge you battery fully as this is also not good for it...with lithium ions it is good to charge as often as possible, to prevent erosion inside the battery...while doing this you must not use the device...so even if you charge it for 10 minutes its a good thing for the battery. do not use the phone while charging as this confuses the battery.
here's a good article, that explains everything completely http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
While I believe the information you posted is true, I think it may mislead some people here.
1. when you wipe the battery stats, you still need to do the cycling. Otherwise, your new stats will be off.
2. 'plugged in' doesn't mean 'constantly charging'. The IC chip on our phone is supposed to do what you are recommending we should do; charge to close to full, drain some, then charge to close to full. I say 'supposed to' because I only read about it somewhere.
nixxofugi said:
From what I have read so far, wiping battery stats simply erases the information in the battery usage screen. I don't see it having any benefits to how long the battery lasts even in my previous attempts to increase battery life.
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
You're righ that wiping battery stats won't improve your battery hardware-wise. But if done properly, wiping stats and cycling should re-align your phone's knowledge of the real battery capacity. If you have 100% at one time and 50% just an hour later, you know either your battery is bad, or your stats is off.
IDB_2011 said:
I had a Desire and I did the battery wipe in recovery and to me my phone battery was outstanding....Lasting almost two days with moderate to heavy usage...
Click to expand...
Click to collapse
Two days!? That's awsome. My Amaze only lasts 15+ hours with all the battery saving tricks applied. Well, I play games and music so I thought it's normal. Which rom did you have running on your Desire? Oh, never mind. I thought Desire was G2, which my daughter uses.
How do you boot into recovery mode?
Sent from my HTC_Amaze_4G using XDA App
seansk said:
over charging lithium ions is not a good idea...also you do not need to cycle lithium ion batteries as they contain no memory as the old ni-metal hydrdie and ni-cd. batteries..
.infact is is advised to charge you batter often and keep electrons moving in your lith ion battery as oposed to ni-cd which is better to let it fully charge and fully discharge.
Do not over charge or fully discharge a lithium ion battery...infact the high voltage stresses the battery further and shortens its life. also do not discharge you battery fully as this is also not good for it...with lithium ions it is good to charge as often as possible, to prevent erosion inside the battery...while doing this you must not use the device...so even if you charge it for 10 minutes its a good thing for the battery. do not use the phone while charging as this confuses the battery.
here's a good article, that explains everything completely http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
Click to expand...
Click to collapse
A properly designed battery charger (like the one in the phone) will not overcharge the battery. These chargers have circuitry to prevent overheat, and as the phone gets close to maximum charge, they slow down and then stop the current flow. They don't want exploding batteries!
EDIT: I do worry, however, that the phone is designed for the stock battery at 1.8v, and might overcharge a replacement battery (mine are all 3.7v). I have read of some people that had overheated aftermarket batteries when charged in the phone. I use my external charger for the spare batteries.
cirrob said:
How do you boot into recovery mode?
Sent from my HTC_Amaze_4G using XDA App
Click to expand...
Click to collapse
Remove battery, turn back on pressing volume down and power for a few seconds, you are now in the bootloader, use the volume keys and power and select recovery, wait for a few more.seconds and you'll be at the recovery
Sent from my Amaze running Amazing QuickSense 1.5.1 using XDA app
I assume root is required to achieve this method.
Sent from my HTC_Amaze_4G using XDA App
eggydrums said:
Remove battery, turn back on pressing volume down and power for a few seconds, you are now in the bootloader, use the volume keys and power and select recovery, wait for a few more.seconds and you'll be at the recovery
Sent from my Amaze running Amazing QuickSense 1.5.1 using XDA app
Click to expand...
Click to collapse
Can't you just disable fastboot rather than pull the battery?
eggydrums said:
Remove battery, turn back on pressing volume down and power for a few seconds, you are now in the bootloader, use the volume keys and power and select recovery, wait for a few more.seconds and you'll be at the recovery
Sent from my Amaze running Amazing QuickSense 1.5.1 using XDA app
Click to expand...
Click to collapse
Or, just choose the restart phone option from the power menu.
I'm guessing this require root as it sat at a red triangle on my unrooted Amaze.
RZJZA80 said:
I'm guessing this require root as it sat at a red triangle on my unrooted Amaze.
Click to expand...
Click to collapse
That was fantastic to read lol. Yes, you are correct. You need root and clockwordmod installed
RZJZA80 said:
I'm guessing this require root as it sat at a red triangle on my unrooted Amaze.
Click to expand...
Click to collapse
You don't need CWM recovery. You don't really have to be rooted, either. If you know how to temp-root, you can wipe the battery stats using adb shell or terminal emulator.
The file is located at /data/system/batterystats.bin. You can remove it by:
Code:
adb shell
rm /data/system/batterystats.bin
Don't forget to 'su' if you're using terminal emulator.
In my experience, the best time to wipe the file is right before starting to charge the phone all the way to full.
So, has anyone tried this lately with success? I'm a complete noob and have no idea about rooting, but might look into it if this really works for the Li batteries.
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
First and foremost...lets get this out of the way..if u want more battery life..get a newer more powerful battery...thats the best option..
But if you still wanna stick with your current battery and still want improvements..here is a little something i want to tell you..
Obviously you might have searched about how to improve and come across the method known as calibration.. this is the method as described by one of our members..
nickrule1896 said:
Steps:
1. Before flashing a new rom, use root explorer (with read/write set) to delete the file "batterystats.bin" stored in /data/system/.
2. Charge your phone with it being turned off.
3. After it is fully charged(100%), take out its battery without plugging off the power supply.
4. Wait for a few moments, and a ? sign will appear.
5. Put your battery back in. You should see that the battery percentage increases quickly to 60%. If it increases to 100% with seconds, please skip to step 6.
6. If it stops increasing at 60%, let the phone continue to charge until 100%(takes quite a while)
7. Once it reaches 100%, let it charge for a further 15-20 minutes.
8. Once that's done, you can boot to OpenRecovery and flash your rom!!!
Alternative way of calibration(thanks a lot zeppelinrox!!!):
http://forum.xda-developers.com/showpost.php?p=11803458&postcount=10
This method allows you to calibrate the battery and use ur phone at the same time!!!
Click to expand...
Click to collapse
This method..simply put is useless...
If you dont believe me...then read this post..http://forum.xda-developers.com/showthread.php?t=1460553
and subsequently read this post by Google Engineer Dianne Hackborn(funny surname i tell u) and you'll finally believe Battery calibration is just a myth..unless ofcourse you dont believe you know more about Android than the people who designed it
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
As is mentioned.. "It has no impact on your battery life" !!!
So...BATTERY CALIBRATION IS JUST A MYTH!!! Still...if you dont believe me..continue following your stupid practices..
Coming onto bump charging...
When your phone shows u fully charged it is actually charged only till 90-95% and thus u may experience a sudden decrease in battery %age after u unplug the charger...
The method for bump charging as you ardent ritualists may already know is as follows..
" Phone on, charge to full
Shut Phone off, charge to full
Phone back on, charge to full, use like normal. "
The main disadvantage of this is that it increases your battery voltage...Also in some case of sudden overvoltage while charging this can damage your battery...what for? 5% increase...
also..all that extra heat is bad for the lithium batteries...
Therefore 95% battery is good enough for daily use
so..if you really want to improve battery life...dump all these methods and just buy a more powerful battery and give it a month to give you proper results..all new batteries require at most a month to work to their full potential...
P.S. : come to think of buying a new battery...this idea may be very helpful to you if you do happen to own a Galaxy NOTE..
erniechan said:
Are there any problem if I use the battery from the galaxy note?It is 2500 mah .
Sent from my GT-S5830 using xda premium
Click to expand...
Click to collapse
Cheers and Peace to all..
The fact that the Galaxy Ace cannot work without the battery already proves the first battery calibration invalid for most .
Also , all we knew was to erase batterystats.bin and charge to full , that's it
This was sent from a Galaxy Ace. Problem?
EmoBoiix3 said:
Also , all we knew was to erase batterystats.bin and charge to full , that's it
This was sent from a Galaxy Ace. Problem?
Click to expand...
Click to collapse
And that is of no use or benefit at all...
Trolling all day long LIKE A BOSS
That Dianne woman who was featured in the op - isn't she a transsexual.
I saw her(/him?) on YouTube. I'll try and get the video!
Sent from my GT-S5830 using Tapatalk 2
http://www.youtube.com/watch?v=3aUjukCdPyQ
Sent from my GT-S5830 using Tapatalk 2
wow. thats totally unexpected.
so she's a he all along?
NathanBookham said:
http://www.youtube.com/watch?v=3aUjukCdPyQ
Sent from my GT-S5830 using Tapatalk 2
Click to expand...
Click to collapse
That's just.....shock
This was sent from a Galaxy Ace. Problem?
Oh
My
F*-*-*g
God.
Trolling all day long LIKE A BOSS
If this is all a myth, and I'm none the wiser, why is my battery percentage all over the place? For example, went on a hike listening to music etc. Ran the battery out. Got home, plugged into charger, turned on and it said I had 46% though when I first plugged it (while off) the battery symbol showed obviously barely anything.
thechaoz said:
If this is all a myth, and I'm none the wiser, why is my battery percentage all over the place? For example, went on a hike listening to music etc. Ran the battery out. Got home, plugged into charger, turned on and it said I had 46% though when I first plugged it (while off) the battery symbol showed obviously barely anything.
Click to expand...
Click to collapse
Android is very....insensitive when it comes to battery .
Android keeps track of the battery using a permanently running Battery Service , which polls at a certaon interval....
For our phone , deep sleep will affect battery polling and thus your battery will be displayed as being larger than it really is .
Sent from Ursa's claws.
Heyy guys I have a problem regarding the battery life on my fone
On any rom be it cm7 cm9 or cm10 whenever i charge my fone to say for eg. 65-70% and unplug the charger battery starts draining quickly until it reaches a particular point like (45-50%) then the drain becomes somewhat stable
However when i charge the phone fully (ie.100%) the battery depreciates economically (like on stock)
This means I have to charge the battery full in order to prevent for drain
What should i do to prevent this from happening? Or should I buy a new battery
Any Help Appreciated
In my experience with any lithium battery not just android increase battery life by let it die fully so it wont turn on at all then charge till 100% and no harm done by leaving an extra 20 mins leave charger in while turning on should vastly improve an older battery
Sent from my now unbricked acei thanks to xda
very helpful. thanks. :good:
paddyman93 said:
In my experience with any lithium battery not just android increase battery life by let it die fully so it wont turn on at all then charge till 100% and no harm done by leaving an extra 20 mins leave charger in while turning on should vastly improve an older battery
Sent from my now unbricked acei thanks to xda
Click to expand...
Click to collapse
I am afraid you're wrong in letting old batteries to drain completely man...when battery is new like say within 150 cycles what you said is true but as it becomes old it's better to charge it when it goes below 15...coz the chemicals will become inactive and won't be efficient in taking up charge
Sent from my GT-S5830 using xda app-developers app
All I know about Li-ion batteries is that when I dismantle them the real lithium strip inside reacts with the air and decomposes :/
I give up writing anymore signatures.
CallMeVentus said:
The fact that the Galaxy Ace cannot work without the battery already proves the first battery calibration invalid for most .
Also , all we knew was to erase batterystats.bin and charge to full , that's it
This was sent from a Galaxy Ace. Problem?
Click to expand...
Click to collapse
What about Die Hard Battery Caliberator? Got me rid of bump charging.
After flashing darkyrom, I messed up my battery stats (I think) by calibrating it everytime I fully charged my phne. I know I what I did is stupid not reading infos about it. But just to ask, if flashing to stock firmware will fix the battery drain. Everytime i full charge to 100% and rebooted the phone, I get 22% and figured that android OS is consuming 75% of my battery. I'm pretty hesistant flashing it because of battery drain that might turn off the phone during flashing. It has no warrant already so I cannot bring it to samsung. So is it safe to flash the phone?
Just plug your phone in your computer or wall to make sure the battery doesn't die.
Drain batt completly and then charge via pc usb untill full, unplug drain and charge via pc usb again. Pc usb has 500 miliamps, so will charge slower but will have a more full charge.
Sent from my Sensation Z710e using xda app-developers app
Pittoreski said:
Just plug your phone in your computer or wall to make sure the battery doesn't die.
Click to expand...
Click to collapse
But i will have to flash it via odin so i cant charge it while flashing.
Your right, your phone doesnt charge while in recovery or while flashing. If you have clock work mod recovery then charge your phone via pc to full, then reboot to clockwork and select wipe battery stats. Reboot your phone and use untill it is 10% then do a pc charge untill full. No need to flash now, try my way first.
Sent from my Sensation Z710e using xda app-developers app
Welsyntoffie said:
Your right, your phone doesnt charge while in recovery or while flashing. If you have clock work mod recovery then charge your phone via pc to full, then reboot to clockwork and select wipe battery stats. Reboot your phone and use untill it is 10% then do a pc charge untill full. No need to flash now, try my way first.
Sent from my Sensation Z710e using xda app-developers app
Click to expand...
Click to collapse
Will this get rid off the high android OS/cpu usage? I want to flash it to stock ICS btw.
I think so, i dont think it is your android taking all the power, I dont know much about android and kernels and stuff, but i know allot about batteries since i am an rc driver and flyer. Your ac charger has to much current so the phone reads top voltage for a few minuts and assumes that the battery is full, when in actual fact only about 400 miliamps went into the battery and the battery capacity is around 1500 miliamp. Now if you charge at lower amp level the voltage wont go to the top right away. You should be able to get a full charge after about 4 charging sessions. I would not suggest trying to flash now with your weak battery.
Welsyntoffie said:
I think so, i dont think it is your android taking all the power, I dont know much about android and kernels and stuff, but i know allot about batteries since i am an rc driver and flyer. Your ac charger has to much current so the phone reads top voltage for a few minuts and assumes that the battery is full, when in actual fact only about 400 miliamps went into the battery and the battery capacity is around 1500 miliamp. Now if you charge at lower amp level the voltage wont go to the top right away. You should be able to get a full charge after about 4 charging sessions. I would not suggest trying to flash now with your weak battery.
Click to expand...
Click to collapse
I messed up with the battery calibrator I calibrate everytime i fully charged my phone so maybe this is the cause. I will try your suggestion and see if it works. Thank you for your help.
The battety calibration tool is supposed to wipe your battery stats like clockwork does, maybe the app has some issue and is not wiping the stats completely. Use clockwork recovery to wipe the stats once the battery is fully charged. Then again only when you flash a new rom or put new battery.
Welsyntoffie said:
The battety calibration tool is supposed to wipe your battery stats like clockwork does, maybe the app has some issue and is not wiping the stats completely. Use clockwork recovery to wipe the stats once the battery is fully charged. Then again only when you flash a new rom or put new battery.
Click to expand...
Click to collapse
And one more thing I noticed, the phone gets full charge so quick. Like for 30mns, it's 100% already. When before, the phone gets fully charged for like 2-3hrs.
cessprin00 said:
And one more thing I noticed, the phone gets full charge so quick. Like for 30mns, it's 100% already. When before, the phone gets fully charged for like 2-3hrs.
Click to expand...
Click to collapse
It sometimes happens.. Did u charge from <20% or greater than that?? Becoz sometimes the battery shows fake stats.. The best way to calibrate is LEAVE the battery to calibrate itself for a week times. It needs a cycles of charge and discharge to get the correct value..
And the battery usage is not changing already. Been 4d 36mns 24 secs for a week. I wanna flash a stock rom but afraid battery will drain during flashing. *sigh*
Get a wall charger to charge the battery, check that the battery is not damaged ................................ . regards
It may be possible that you have a dead cell. Charge the bat to full, remove bat and use multimeter to test the bat, should read about 4volts. Leave the battery one side for about 1.5 hours, then test the voltage again. If less then 3.7 then you have a dead cell and will have to get new battery.
Sent from my Sensation Z710e
Welsyntoffie said:
It may be possible that you have a dead cell. Charge the bat to full, remove bat and use multimeter to test the bat, should read about 4volts. Leave the battery one side for about 1.5 hours, then test the voltage again. If less then 3.7 then you have a dead cell and will have to get new battery.
Sent from my Sensation Z710e
Click to expand...
Click to collapse
What multimeter? Got no idea what it is. Is that an app?
No its not an app. Its a tester that an electician would use to test voltage. Go to android market and download Battery info. That is an app that will also tell the voltage. Currently my bat is at 62% and 3.8volts. Download the app and let me know what the reading are.
Sent from my Sensation Z710e
Welsyntoffie said:
No its not an app. Its a tester that an electician would use to test voltage. Go to android market and download Battery info. That is an app that will also tell the voltage. Currently my bat is at 62% and 3.8volts. Download the app and let me know what the reading are.
Sent from my Sensation Z710e
Click to expand...
Click to collapse
What about this part 'leave the battery one side for 1.5h' you mean detach the battery of phone for 1.5? And what if I got 4below volts, that means my battery is okay and its the battery stats messing up?
Find an electrical tester, most car parts shops have the cheap ons (they do the job)
Full charge battery and remove battery from phone. On the battery there should be 3 copperplates, find the two with + and -. Test voltage on these points with tester set to dc volts. Leave your battery out of the phone for 60minuts and then test again. Let me know what the results are.
Sent from my Sensation Z710e
Fully charged battery should be 4volts for about 30 minuts and then start dropping to about 3.7. If less then 3.7volts your battery is faulty. Any voltage between 3.7 and 4.0 volts after one hour is 100% fine.
Sent from my Sensation Z710e
To tell you the truth, the galaxy s2 is my friend's s phone so as soon as i get it, i will test it. But now, i'm using galaxy s but I think i have a faulty battery. I will try what you said and it helped me a lot so thank you!
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
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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%.