Database Develop

Calibrate my battery

Which is the best style to calibrate my battery? I't only lasts for 10h.

10 hrs is pretty good
i only get 4 hours under heavy use

I forget which thread it was but it said to completely discharge until the phone switches off (ignore please plug in prompts) and completely charge it back up 5 times. It worked wonders on mine
4 hours? pah, i can kill mine in under an hour lol
seriously though, it all depends on usage and how much you have running on the phone (big widgets and social feeds for instance), screen brightness also has a big impact.
On average i get a day out of mine but my mums boyfriend, with the same phone uses it far less and has had 3 days from his on one charge

Ok i'll try your method. Thanks guys!

I have mine going down to 79% within half a day,only standby and frequent switching on of the screen, is it normal? Thanks!

stickfinger said:
I forget which thread it was but it said to completely discharge until the phone switches off (ignore please plug in prompts) and completely charge it back up 5 times. It worked wonders on mine
Click to expand...
Click to collapse
So you mean discharge completely and recharge completely and repeat this 5 times?
What about the following method :
sonci said:
Just wanted to share that I got an improvement
after recalibrating the batery,
Basically just charge full with phone on
then turn off, charge, turn on, turn off, charge.
I advice this for those who have flashed the firmware..
Click to expand...
Click to collapse
So which one of these two methods is the right way to do it?
EDIT: And how good is this guide?
1. Run the device down until it turns itself off.
2. Turn it back on and wait for it to turn itself off again.
3. Remove the battery for 10 seconds.
4. Replace the battery, but leave the device off.
5. Charge the device until full and then for another hour.
6. Boot into recovery and reset battery stats (or, go to console and type “su” enter, followed by “rm /data/system/batterystats.bin”)
7. Run the device’s battery down until it turns itself off.
8. Charge to full while off.
9. Restart and use as normal.
Click to expand...
Click to collapse

IMHO, the battery stat is just pure witch doctor style..
Id recommend you use the phone till it drops down the 2% then power it off and charge it while its off.. that way it MAY take upto 4-5hrs charging when it says its full remove the battery for 1-2mins then install it again and charge it while unplugged its gonna charge for ~5mins and when its full disconnect the charger and power on the phone.. you just need to do this once ( on my experience ) and charge as often as possible since its not a good idea to keep draining lithium batteries

Cartier23 said:
Do it this way:
Make the phone empty.
Charge it all night (8 hours + ).
While still charging, open applictaion: Terminal Emulator (it is available on the market for free)
Write:
su
rm /data/system/batterystats.bin
it looks like that nothing really happens, but it does.
Reboote the phone. Important!
You will see the difference. I get from 1 day before to 3 days now.
For doing this, your phone, of course, should be rooted.
Click to expand...
Click to collapse
There's another method^^
I really don't know which one of the 4 battery calibration methods that I've mentioned above I should use?

I've read from many sources to not worry about frequent discharging/charging of your battery. The lithium-ion batteries we have in our phone will degrade based on cycles (when a certain number of charge cycles have been reached). As for overcharging, the phone is smart enough to stop charging once the battery is at 100%. The battery will slowly discharge, and once it hits a certain point between 93-98% it will start charging again.
As for which method works the best...I'm struggling with the same issue. Personally I've tried almost every method other than the reset battery stat (which I plan to do as a last resort).
I have found that the battery gets better after a few weeks of use. The full discharging/charging does help marginally. The turning on and off method of charging also helps marginally. The biggest culprit is usually background apps preventing your phone from properly sleeping or activating your data when your phone is locked. I was using juice defender and my battery still drained crazy. I JUST changed my juice defender to turn on data for 2 mins every 30 mins (as opposed to 1 every 15) and it seems to have made my battery better. Before I did this, my phone drained 40% in 6-7 hours (while i was sleeping). Right now... my phone has been active for 5h48min and is at 72% (a bit of texting, a bit of 3g, and wifi). Here's hoping it'll get better.

This thread helped a lot
My phone drained 70% of battery from 5am till 12pm (while I was asleep). When I saw the battery usage stats it said that Android OS draind 68% of the battery. I flashed the phone on sunday. I should do a calibration then, right?
I'm going to try this method:
Cartier23 said:
Do it this way:
Make the phone empty.
Charge it all night (8 hours + ).
While still charging, open applictaion: Terminal Emulator (it is available on the market for free)
Write:
su
rm /data/system/batterystats.bin
it looks like that nothing really happens, but it does.
Reboote the phone. Important!
You will see the difference. I get from 1 day before to 3 days now.
For doing this, your phone, of course, should be rooted.
Click to expand...
Click to collapse

Battery indicator fail

NOTE: These tests were done using branded Orange PL firmware as well as UK Global
symptoms:
1. phone is charged by 100% then unplugged after about one hour
2. 100% is kept for the next 6-7 hours
3. during the day battery drops as normal till about 50%
4. once phone is rebooted battery instead of 50% shows 32%
I don't think the latest phones needs battery calibration (or am I wrong)
Sony has screw up the battery measurement
Hope they will soon release an update
Does anyone have similar issue?

masi0 said:
NOTE: These tests were done using branded Orange PL firmware as well as UK Global
symptoms:
1. phone is charged by 100% then unplugged after about one hour
2. 100% is kept for the next 6-7 hours
3. during the day battery drops as normal till about 50%
4. once phone is rebooted battery instead of 50% shows 32%
I don't think the latest phones needs battery calibration (or am I wrong)
Sony has screw up the battery measurement
Hope they will soon release an update
Does anyone have similar issue?
Click to expand...
Click to collapse
Only happened on second or third day that phone was on last 1% for half hour other then that it is accurate to me.
[edit:] no harm done in deleting /data/system/batterystats.bin after full charge, unplug, let phone go to 1% and then fully charge.
Sent from my Xperia T

tumult said:
Only happened on second or third day that phone was on last 1% for half hour other then that it is accurate to me.
Sent from my Xperia T
Click to expand...
Click to collapse
I think I need to wait till 1-2% then charge it up to 100% - then we shall see

masi0 said:
I think I need to wait till 1-2% then charge it up to 100% - then we shall see
Click to expand...
Click to collapse
yes, i just edited my post to suggest it
Sent from my Xperia T

Deleting battery stats will do nothing. Battery needs to be calibrated by charging full, unplug, turn off, plug back in till full, pop battery about 30 seconds, put battery back in then boot.
...

masi0 said:
NOTE: These tests were done using branded Orange PL firmware as well as UK Global
symptoms:
1. phone is charged by 100% then unplugged after about one hour
2. 100% is kept for the next 6-7 hours
3. during the day battery drops as normal till about 50%
4. once phone is rebooted battery instead of 50% shows 32%
I don't think the latest phones needs battery calibration (or am I wrong)
Sony has screw up the battery measurement
Hope they will soon release an update
Does anyone have similar issue?
Click to expand...
Click to collapse
Not sure if this is the definitive answer to this, but you should not believe your battery percentage meter, read this to know why

gregbradley said:
Not sure if this is the definitive answer to this, but you should not believe your battery percentage meter, read this to know why
Click to expand...
Click to collapse
This article is a b***t:laugh: How come these problems do not exist on the Xperia S or even iPhone 4s?
I hope Sony will release system update soon

@rbiter said:
Deleting battery stats will do nothing. Battery needs to be calibrated by charging full, unplug, turn off, plug back in till full, pop battery about 30 seconds, put battery back in then boot.
...
Click to expand...
Click to collapse
and didyou read my post? I said no harm in that, but he should do full charge.. and suggestion to pop out the battery fails a bit as T has unremovable battery

[Q] Problem with battery status on i9000

Hello!
Been using my i9000 for about 2 years and 3 days ago i came around a problem that I can't solve. Let me try to explain as good as my english skills will let me.
I`m charging the battery to 100%. I`m unplugging then plugging back my charger a few times to make sure it's charged 100%. Then I`m using my phone as usual for about 2-3 hours (less if I`m playing a movie or listen to music) and my phone automatically shuts off. When I turn it back on, it shows 1-2% battery.
Now, if I let it idle, it will slowly "charge" back up (without the charger plugged). It wont show the charging icon over battery, but it's level will rise to about 60-70%.
If, after I turn it back on I use it intensively, it will shut down in 1-2 minutes. I tried to charge it to full and then enter that root menu (volume up+menu key+power key) to delete the battery stats, but still can't solve the problem.
I can't believe my battery is dieing or having a hardware problem because it started acting like this out of the blue, so I think there's a software problem somewhere (maybe corrupted battery info stats or something). My bet is on the fact that the phone doesn't know the empty and full limits of the battery.
My phone is rooted and using android 2.3.6. Any advice would be highly appreciated, thanks!

Same problem here
realraptor06 said:
Hello!
Been using my i9000 for about 2 years and 3 days ago i came around a problem that I can't solve. Let me try to explain as good as my english skills will let me.
I`m charging the battery to 100%. I`m unplugging then plugging back my charger a few times to make sure it's charged 100%. Then I`m using my phone as usual for about 2-3 hours (less if I`m playing a movie or listen to music) and my phone automatically shuts off. When I turn it back on, it shows 1-2% battery.
Now, if I let it idle, it will slowly "charge" back up (without the charger plugged). It wont show the charging icon over battery, but it's level will rise to about 60-70%.
If, after I turn it back on I use it intensively, it will shut down in 1-2 minutes. I tried to charge it to full and then enter that root menu (volume up+menu key+power key) to delete the battery stats, but still can't solve the problem.
I can't believe my battery is dieing or having a hardware problem because it started acting like this out of the blue, so I think there's a software problem somewhere (maybe corrupted battery info stats or something). My bet is on the fact that the phone doesn't know the empty and full limits of the battery.
My phone is rooted and using android 2.3.6. Any advice would be highly appreciated, thanks!
Click to expand...
Click to collapse
Did you get to have yours fixed??
I had the same problem with my I9000, in the same period.. what are the odds?
I replaced the battery, and the battery level weirdness went away, but I'm still having problems charging it. Actually, the battery won't charge in the phone, tried several charges, with different amps. I have an external charger, which will take the battery at 100%, and it will last a few hours in the phone.
I also have another problem: if I have the phone on, with the charger connected, and shut it down, I can only get it back on if I disconnect the charger. I also don't get the battery indicator when the phone is off.
I was using CM10, but then I reverted to stock 2.3.6, tried a few kernels, modems, etc, but none solve my problems.

hi guys
quite basic problem u got there
if ur on 2.3.6, then its natural problem.its not like changing kernel can solved it as it is safety measure for battery in stock ROM.
to answer ur question;
when charging at deepsleep mode nothing will change=
as cpu at min stated,even wifi will be knocked off n sometimes network signal also.
battery suddenly goes up when rebooting or awake from deepsleep=
its ur battery stat+safety measure for battery (hav u heard BLX (Battery Life Xtender) in any cm10 features?) to maintain fone power state.
battery will never goes 100% n u need to plug n unplug again for it to full=
still count as BLX (above) as in this features battery will goes 90% - 95% as its max to make sure battery lasting longer (if not,why do u think u can still use ur battery in full state after 3 years (1000+ cycles) n it still not bubling like old nokia fone?)
fone will not awake when charging (if enter sleep mode) =
check ur kernel n make sure min cpu change to ~200mhz as its min n dont lock ur cpu to its min.if in stock, something wrong with ur home or power (da one trigger awake) button.
da conclusion is, sometimes (3 month calculated) reset ur battery stat (if ur on GB) with app (too many app on Gstore) but needed root n follow strictly step. DO NOT OVERCHARGE (charging n leaving ur fone till morning to discharge) n be thankful this features intact in updated GB so u can use ur battery much longer than nokia fone.
but u can change it by upgrading to cm9 to disable it. charge it with 'stay awake' enable on dev option n u ll get full 100% usage of ur battery
thats all for my morning essay
n thank you for reading (if u try to read)
Regards
Sent from my GT-I9000 using xda app-developers app

Actually we have a thread with battery problem.
1 Turn off your phone.
2 Charging phone without turning on to full and switch on then continue charging to 100%
3 When getting 100% signal, unplug quickly.
4 Pull off the battery and put it anywhere.
5 Press power buton copule time
6 Wait for 20 min
7 Meanwhile, take this opportunity to dust off the internal compartment.
8 Put back the battery on the right side.
9 Turn on the phone.
10 Pray the Battery god
11 ... and voilà !

Battery dropping from 12% to 0% in a few seconds

My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks

I would like to see some feedback about this, as well. I'm experiencing the same thing.

junta_mpb said:
I would like to see some feedback about this, as well. I'm experiencing the same thing.
Click to expand...
Click to collapse
I have google around but no real solution.
I have tried calibrating battry, let's see what happens

Battery calibration is something you should do!
If it doesn't work try different FTF Files for your device or even use PC Companion to repair your device...
If you could try custom roms it would be better because if the problem still remains it means there is a hardware problem(Probably battery replacement will be needed).

comeon, no one with a real good idea about source of the problem and its solution?

thegios said:
comeon, no one with a real good idea about source of the problem and its solution?
Click to expand...
Click to collapse
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom

mimotata said:
use your phone untill it turns off - boot into recovey with power then volume up
charge your battery while on recovery twrp from 0 to 100 ( leave it just to charge it may take up to 5 hours )
test again if worked fine on discharge from 12 to 0 so u have a kernel problem
you may change the kernel or try another rom
Click to expand...
Click to collapse
Ok, I have tried all possible methods
- using an app called BatteryCalibration
- using the charging mode suggested above
- deleting manually the battery stats file
Phone still goes from 12% to 0% in seconds and shuts down.
I DO NOT BELIEVE IT IS A KERNEL PROBLEM because I have the original .157 sony ROM, just rooted with a few crapware disabled
I DO NOT BELIEVE IT IS A BATTERY PROBLEM because I have tried the following: when phone goes from 12% to 0% and shuts off, I plug it in, wait that it charges for say 10 minutes, turn it on, battery is at 4%, unplug it, phone runs for at least 40 minutes (it should shut down).
So it really seems to be a bad reading...

Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer

bibica said:
Hmm, i have same problem with battery , when battery is 32-35%, screen off dropping to 22-25% in some minute, but wheni test with screen on 32-35%, don't have problem
It difficult question to answer
Click to expand...
Click to collapse
It is not the same problem.
My problem is that when the phone (after several hours, also of intensive use) reaches 12% in a few seconds it drops to 11% then suddenly to 0% and it shuts down.
Then, If I charge it for 10 minutes, unplug and turn it on, battery is at 4% and lasts for another hour: this should prove the problem is not the battery but its reading.
And deleting batter stats is useless, besides this being a myth...

thegios said:
My battery is dropping from 12% to 0% in a few seconds and phone shuts down.
See attached screenshots from battery graph and better battery stats.
During normal use until 13% discharge is normal.
Any help is appreciated.
Thanks
Click to expand...
Click to collapse
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902

mimotata said:
same here
first screenshot is the normal of the battery
second screenshot when it starts to do the problem not a big problem
third pic is the problem big problem ( fast drain and fast charge )
also the fourth pic is how my battery last from 100 to 15 about 6 hours hardcore usage and after that 2 or 3 mins max 0 :/
i dont have this problem on sony stock rom 108 or 157 seems fine no fast drain or fast charge just on any other rom that problem happenes
iam now on cm11 phone model c6902
Click to expand...
Click to collapse
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%

thegios said:
I do have original z1 stock .157 rom and I while ago had not this problem.
And yes, it seems that from 100% to 12% it takes ages even with heavy use then suddenly in 3 seconds drops to 0%
Click to expand...
Click to collapse
i tested every kernel out there for cm11
it is about bad reading from battery
but as no offline charge on cm roms
so no calibiration

So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?

thegios said:
So what is the solution?
This morning it dropped from 42% to 21% in a minute and then to 0% in seconds. I put charger on, left it charge 3 minutes, turned it on, batt was at 5%, unplugged and phone remained awake for 20 minutes during use
There must be a way... Full reset maybe?
Click to expand...
Click to collapse
tested everything wiped and fresh install still the same

mimotata said:
tested everything wiped and fresh install still the same
Click to expand...
Click to collapse
I will try removing sd card, even though I do not see why that would be a problem

Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app

noteandfound said:
Same problem.
Tried
>PC Companion Repair
>Batt calibration
>flashing Stock rom using flashtool
Still drops to 0% when it reach 50%
Maybe a battery problem?
We experience it all by now maybe because our z1 is more than a year old and battery maybe affected?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.

nikkorob said:
Yeah from playing like 30 minutes of games it will shuts off. But i wait for my phone to cool down for like 10 minutes then turning it on , i now have 45% battery but will drain badly again even for like using the camera.
Click to expand...
Click to collapse
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app

thegios said:
Try this: when it reaches 50% and shuts down, while phone is off, plug it in, wait 10 minutes, turn it on and unplug it. Phone should be at 8% or so, and will last normally now.
Click to expand...
Click to collapse
noteandfound said:
Same to me.
We all experience the same thing.
Anyone consulted Sony Service Center regarding this?
Sent from my C6903 using XDA Free mobile app
Click to expand...
Click to collapse
sir are u Filpino ? one of d users of this server have suggested me to bring my unit to the sony center. it seems my phone's battery have already expanded. That same thing have made my phone's backcover to open (on the middle part where the battery is located).

difference between TWRP and os battery percentage?

There has been a difference of about 10-12% between TWRP and os battery percentage, running latest PN with EX kernel, the phone has also started to shutdown below 40 percent during last three weeks, have tried calibrating battery multiple times but the problem is still there, even factory reset my phone , has battery faulted after 2 and a half years of use? Or what could be the issue? Mind you the shut down happens only once and I don't have to connect the charge to turn it on, it always have 25-35% battery left

The battery itself is the issue. Replace it.

clear bootloader logs every time you charge the phone so it doesn't die at 40%, but yeah the battery is shot, need replacement
Sent from my Nexus 6 using Tapatalk

Yasharkhan said:
There has been a difference of about 10-12% between TWRP and os battery percentage, running latest PN with EX kernel, the phone has also started to shutdown below 40 percent during last three weeks, have tried calibrating battery multiple times but the problem is still there, even factory reset my phone , has battery faulted after 2 and a half years of use? Or what could be the issue? Mind you the shut down happens only once and I don't have to connect the charge to turn it on, it always have 25-35% battery left
Click to expand...
Click to collapse
First... The info in TWRP is more correct because of how it is calculated...
Second... It's a voltage issue... Sign of a dying battery...
Repairsuniverse has a great video of how to replace it... Takes about an hour... Beware the volume and power ribbon... That connector is a bastard
Sent from my Nexus 6 using Tapatalk