Can someone please tell me how I do this on a rooted 2.1? It's driving me mad trying to google it and I need to reset the battery stats to improve the battery life.
install xrecovery (dev thread) goto "advanced" > "wipe battery stats".
Edit: i just used this myself, but how would this "improve" the lifecycle of a battery?
Do SE battery's have a chip on them that counts the used hours/days, or is it just the android fw that keeps track?
(I have 2 fake battery's also (ebay), so i never run out of juice in case of the chip.. i bet these fake's dont have a chip.. kinda like fake PSP batterys (special pandora's excluded))
it won't improve the battery life.
however, you can maintain your battery life and align the battery stats to actual battery level by draining it until the phone cannot power back on. plug it in, wipe stats, power off, let it charge fully, then leave it on the charger for about an hour afterwards before powering it back on.
svtfmook said:
it won't improve the battery life.
however, you can maintain your battery life and align the battery stats to actual battery level by draining it until the phone cannot power back on. plug it in, wipe stats, power off, let it charge fully, then leave it on the charger for about an hour afterwards before powering it back on.
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Click to collapse
you might try this:
http://forum.xda-developers.com/showthread.php?t=722862
EDIT: Oops... wrong thread
anyone know how to wipe batt stats if phone is not rooted?
is it even possible?
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
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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.
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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.
I have found so many guides on how to calibrate battery best. This one: http://forum.xda-developers.com/showpost.php?p=15450518&postcount=3 Or this one: http://theultralinx.com/2011/07/calibrate-androids-battery.html
Or: just charge until full, wipe batterystats and just let it run out of power, then recharge to full again (that is the easiest one). So would the last one be enough, or do you have to do it the complicated way to get best results?
Also when draining the battery until the phone shuts down (after deleting stats), should it be used normal or can I just run some applications to use up battery fast?
what i used to do was:
charge to full once,
unplug, (and you will see sometimes it goes back to 99%),
plug again for a few minutes,
unplug,
go to recovery and wipe battery stat.
then reboot and use the phone NORMALLY until it shuts off (set the brightness to highest for next step).
BOOT straight into recovery and leave the phone until it dies again because there will still be some juice left.
while off, charge it,
when it gets to 100% while off, unplug,
then plug it again for a few minutes,
then boot up normally.
atlaswingpasaway said:
what i used to do was:
charge to full once,
unplug, (and you will see sometimes it goes back to 99%),
plug again for a few minutes,
unplug,
go to recovery and wipe battery stat.
then reboot and use the phone NORMALLY until it shuts off (set the brightness to highest for next step).
BOOT straight into recovery and leave the phone until it dies again because there will still be some juice left.
while off, charge it,
when it gets to 100% while off, unplug,
then plug it again for a few minutes,
then boot up normally.
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Click to collapse
Ive heard you should never "try" to over charging it by unplugging and plugging back in.
There are a lot of rumors and myths about battery calibration (and a lot of threads on this forum and copy-pastes on other blogs).
Personally I don't believe in long rituals with precise times and percents. Battery has build in controller, that can't be wiped. And Android has battery history file, that can be erased (butdoes it have any sense?).
Please, post link to authoritative source of information about battery calibration, if anyone has it.
Use the phone till its out, power it up via download mode to really drain every last drop. Charge it with the official charger while its off, once charging is full power on the phone let it boot properly and resume to charge maybe for 5mins then your done. Battery stats bin = totaly myth.
brianmay27 said:
Ive heard you should never "try" to over charging it by unplugging and plugging back in.
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Click to collapse
i hear you and i was reluctant to do that as well. but since new Li-Ion batteries have some sort of "overcharge protection" mechanism on them,
the batteries will stop taking in current automatically once they reach maximum mAh (not the battery stat maximum, the battery itself).
dangers related to charging are incompatible chargers, screwed up wall sockets, surges, etc. Know that companies nowadays keep saying "USE ONLY <company> COMPATIBLE CHARGERS"
because these chargers/cables also have this tech where current just stops once it's full.
well the "theory" was that since the battery stats is kernel related and gives battery "readings", when the number gets < 15, it will give out the warning to charge, then when the number gets to 0, it shuts off the system. This may happen but the battery MAY still have some power left in it, it's just the battery stats that says "hey, i see it zero, turn us off".
This scenario may happen to a screwed up battery stat reading, which is solved by wiping it's top charge number (1650) and the bottom charge number (0). the next boot will create a new
source file for the battery stat, containing no data then upon boot complete, the system will record the current battery level as top charge number to the battery stat. when it drains out, that
will be the new bottom charge number.
i do not have a wikipedia or engagdet source but Team Whiskey (a well known dev/mod team for Vibrant) of the Samsung Vibrant forum here in XDA explained it themselves.
Thanks for this thread. Really useful!
I use this one, nice & simple app,
https://market.android.com/details?id=com.nema.batterycalibration
Hi Guys,
I know there's been a few threads on this, but a lot of them don't really answer what I'm about to ask.
I've noticed lately that my battery has been losing about 10% in the first half an hour, then goes down quite slowly which makes me think I need to wipe the battery stats. However a lot of people keep saying 'wipe battery stats' then fully drain, which seems like a ridiculous idea knowing what we know about how badly batteries react to full discharges (on a bad day you can actually knacker the battery), so what I'm asking is can I just wipe the battery stats at 100% without discharging. The user manual never said about fully discharging my phone when I first got it so why would I need to do it now? Also, this concept of bump charging, how would I do it on a Galaxy I9000
Thanks very much!
Breaking you battery through a full discharge? Never heard of that.
Check out these links:
http://wiki.cyanogenmod.com/index.php/Troubleshooting#Battery_recalibration
http://forum.xda-developers.com/showthread.php?t=931639
Janzomaster said:
Breaking you battery through a full discharge? Never heard of that.
Check out these links:
http://wiki.cyanogenmod.com/index.php/Troubleshooting#Battery_recalibration
http://forum.xda-developers.com/showthread.php?t=931639
Click to expand...
Click to collapse
again though, a full discharge, is that wise?
You need to calibrate your battery. There is an app in the market..just search "battery calibration". Charge your phone to 100% then use the app to wipe the stats. Let your phone discharge. Full discharge is not necessary. Discharge to 1% then charge it back up to 100%. Good to go. If you don't want to use the app, you can wipe your battery stats in recovery which accomplishes the same thing.
When you drain your battery, your phone will not just stop working at some point, it will shut down your phone in an orderly fashion before you battery is fully depleted.
When I drain my battery and my phone shuts down because of it, I can still switch it on again and it will work for a minute or so after it has fully started before it will switch off again.
Could I not just wipe the stats and not fully discharge? Or does that achieve nothing. I'm pretty certain it's these battery stats. Today, it went down to 84% in seconds. I've noticed if I plug it in, it charges full, unplug, then plug in again, it starts at about 91% and does the rest. Sound like a battery stats issue?
skezza said:
Could I not just wipe the stats and not fully discharge? Or does that achieve nothing. I'm pretty certain it's these battery stats. Today, it went down to 84% in seconds. I've noticed if I plug it in, it charges full, unplug, then plug in again, it starts at about 91% and does the rest. Sound like a battery stats issue?
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Click to collapse
When you charge, you phone says "charged" as soon as it hits 90%. Check the about-menu in settings (or in my case at least, the lock screen while plugged in) to see at what percentage you really are when your phone says it's charged.
Janzomaster said:
When you charge, you phone says "charged" as soon as it hits 90%. Check the about-menu in settings (or in my case at least, the lock screen while plugged in) to see at what percentage you really are when your phone says it's charged.
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Click to collapse
Oh right I didn't realize that. I'll try it. I've just unplugged it and it immediately said 98% so I plugged back in. This time when I pull, I'm going to wipe the battery stats. I don't really want to discharge fully, because even at 1% it's not great for it. If anyone can state categorically that I shouldn't, tell me now please haha
Not sure why, but I restarted my phone and it went from 50% down to 5 % power? Had it on the charger all night and it was still at 5%?? Took it off the charger for a few hours and im still at 5%. Tried wiping stats and had no luck? Any Help??
Goofypook said:
Not sure why, but I restarted my phone and it went from 50% down to 5 % power? Had it on the charger all night and it was still at 5%?? Took it off the charger for a few hours and im still at 5%. Tried wiping stats and had no luck? Any Help??
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Click to collapse
Drain all battery and charge it from zero. Let it be fully charged before starting it. If you run CWM you can wipe battery state.
Your question is in wrong section in the forum. Try starting the thread in General.
Cheers
+1 this -- and some additional detail...
Wiping battery stats does NOT improve actual battery life. If done properly, and coupled with a calibration cycle, it can increase the accuracy with which your battery reports its current charge. Ideal process is as follows..
Charge to 100%
Reboot into CWM
wipe battery stats under" advanced"
Reboot
Charge back to 100%
Let it DIE (go to 0%) from normal use, DO NOT charge it during the cycle
Re-charge to 100% and you're all recalibrated.
From the sound of it, don't be surprised if your phone sits at 5% for hours. After the calibration, your battery history should be a relatively smooth, downward sloping curve.
Sent from my DROID RAZR using Tapatalk 2
Check Settings>Battery Information>Battery Usage and see if a process named RILD is using a high percentage of your battery usage. That process - a very necessary Motorola radio daemon - is wreaking some havoc by causing very rapid battery discharge and also preventing normal charging.
No solution for you but thought I would let you know before you try too many different "solutions" needlessly.
Thanks!
Jim
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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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/
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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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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
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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
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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%.