[Q] S2 Thinks its fully charged when it isn't - Galaxy S II Q&A, Help & Troubleshooting

I recently dropped my S2 into water for a few seconds and following a week of drying out I turned it on to find that everything is working fine. The only problem I have is that the phone thinks it is at 100% charge after being plugged in for a few seconds. On the first charge I left it plugged in whilst showing 100% and overnight it managed to charge fully so that the phone worked for a full day.
Today however, it reaches 100% (after a few seconds) and seems to stop charging any further. I can use the phone whilst it is plugged in but as soon as I unplug it shuts down due to no power.
Is there a way to reset the battery stats or fix this? I'm currently running 2.3.4 stock.
Thanks in advance,
Chris

Reset battery stats .
As you dont know the basics try Battery Calibration from the market .
jje

That requires root access... is there no way to address this without deviating from official firmware?

Try pull out the battery and put it in the hot water cupboard overnight (or blow dry it, but not too hot - it is a battery afterall), then try it again. Could be related to the calibration chip on the battery...

Battery calibration
It has been mentioned in several XDA forums that the SGS2 has a power supervisor chip that manages calibration automatically and doesn't need battery cycling.
You have probably sustained damage to your phone. It wont cost much to try a new battery though but it is a long shot.
Regards,
John.

I'm guessing it's a hardware fault with the charging circuit. I don't suppose anyone can recommend a good repair shop in the UK?

Hi, I am sorry I am using your thread to post a personal question.
I would recommend you to try a different battery though.
The problem I have is similar, but not the same.
When the phone sounds that it has full charged, I unpluged it and it immeadiately changes from 100% to 99% or 98%. After that it uncharges as normal.
What could be the reason?
I calibrated it with the battery calibrator. Also took out the battery after full charge and plug it back on. With no results.
What could I do?

almorsol said:
Hi, I am sorry I am using your thread to post a personal question.
I would recommend you to try a different battery though.
The problem I have is similar, but not the same.
When the phone sounds that it has full charged, I unpluged it and it immeadiately changes from 100% to 99% or 98%. After that it uncharges as normal.
What could be the reason?
I calibrated it with the battery calibrator. Also took out the battery after full charge and plug it back on. With no results.
What could I do?
You could have searched and read all the posts that say this is normal behaviour .
jje
Click to expand...
Click to collapse

For anyone who's interested, I've managed to fix the problem by doing a full factory reset. To do this I powered up the phone into recovery mode (start whilst holding power, home and volume up) and performed both factory reset and and cleared the cache. Now appears to working fine.
Thanks for all the suggestions.

Related

92% battery max

For the past few days my battery has been charging to a max of 92%, whether or not I try unplugging the battery, leaving the phone on the charger, wiping battery stats, and doing all that I can to try to reset the battery stats.
Anyone have any idea?
UPDATE: My phone is still not charging past 92%, no matter how long I leave it on, or what I try to do to fix it. 4167mv max
I have a similar issue, it's been like that for a long time for me. What ROM/kernel are you running? It might fix it to completely drain it, charge it powered off, reinstall ROM/kernels when it is completely charged and reset battery.
Sent from my MB860 using xda premium
drain it until it shuts off and then charge it all the way to 100%.
I too was having this issue after going from cm7 week 5, to week 8. I did what others were recommending and charged to what showed 4200mv, pulled the battery while still plugged in, put battery back in then after it showed 5%, turned it back on and Viola, 100% battery. Try it.
its most effective if you know your battery is fully charged, power it down, pull the battery, while the battery is pulled plug it into the power adapter, it will act like its starting to charge, but then instead of having a percentage, it will have a question mark. pull the power, put the battery back in, turn on, wipe battery stats in recovery and run with it...
GL
johng75 said:
its most effective if you know your battery is fully charged, power it down, pull the battery, while the battery is pulled plug it into the power adapter, it will act like its starting to charge, but then instead of having a percentage, it will have a question mark. pull the power, put the battery back in, turn on, wipe battery stats in recovery and run with it...
GL
Click to expand...
Click to collapse
I just started having this issue and cant wait to try it thanks for the suggestions.
when this happend on mine all i did was keep using it and it fixed itself. i ran it down maybe to 20% before I got to charge it again and it slowly creeped back up to 100%. took about a week.
I've had the problem, and have run the solution more times that I can count. But nothing ever fixes it permanently. Everytime I run the battery low, the levels get all screwy again. Maybe my phone is just worse than everyone else's, but I had to just give up on it. Would love a permanent solution, but so long as I'm running this ROM (CM7), I doubt I'll ever find one.
lurchbyrep said:
I've had the problem, and have run the solution more times that I can count. But nothing ever fixes it permanently. Everytime I run the battery low, the levels get all screwy again. Maybe my phone is just worse than everyone else's, but I had to just give up on it. Would love a permanent solution, but so long as I'm running this ROM (CM7), I doubt I'll ever find one.
Click to expand...
Click to collapse
I'm in the same situation as you are... I had this problem for a long time now (Guess it has something to do with excessive flashing...) and no matter what kind of solution I do (Wipe battery stats via recovery, re-calibrate the battery, pull the battery out while charging and replugging it) it returns after a day or two.
I want to check if it has something to do with the battery or the device, and if I will remember to do so, I will plug my spare battery for several day's run, but that is subjected to me leaving the comfort of my usual laziness....
Would love if there was a permanent solution as well, thou I doubt that too....
I've had the same problem on a number of different roms and at different times. I find that instead of mucking around wiping stats etc, it has always come good eventually for me.
timfoote said:
I've had the same problem on a number of different roms and at different times. I find that instead of mucking around wiping stats etc, it has always come good eventually for me.
Click to expand...
Click to collapse
Didn't really understand what you meant, did the battery percentage fixed by itself and gave you 100% at full charge on one day? out of the blue?
Or did you just got used to have less then 100% battery display?
Magnetox said:
For the past few days my battery has been charging to a max of 92%, whether or not I try unplugging the battery, leaving the phone on the charger, wiping battery stats, and doing all that I can to try to reset the battery stats.
Anyone have any idea?
Click to expand...
Click to collapse
First let the battery completely drain and the phone shut down by it self. Second step is to pull out the battery and leave it out for 10min, after that take a plastic bag and put the battery in it and place it in the freezer for 15min. after this palce the battery again in the mobile. make sure there is no any moisture on the battery. Then charge the phone without power on till 100%.
By following these steps this will made your battery to charge fully and more talk time
masood8 said:
First let the battery completely drain and the phone shut down by it self. Second step is to pull out the battery and leave it out for 10min, after that take a plastic bag and put the battery in it and place it in the freezer for 15min. after this palce the battery again in the mobile. make sure there is no any moisture on the battery. Then charge the phone without power on till 100%.
By following these steps this will made your battery to charge fully and more talk time
Click to expand...
Click to collapse
Um correct me if I'm wrong anyone, but doesn't cold kill the battery and shorten its life? I remember my mom always putting new batteries in the fridge and them only lasting a couple days compared to the ones left out that lasted a month or so with same use.
masood8 said:
First let the battery completely drain and the phone shut down by it self. Second step is to pull out the battery and leave it out for 10min, after that take a plastic bag and put the battery in it and place it in the freezer for 15min. after this palce the battery again in the mobile. make sure there is no any moisture on the battery. Then charge the phone without power on till 100%.
By following these steps this will made your battery to charge fully and more talk time
Click to expand...
Click to collapse
Haha, I got a good laugh out of this one -- you've got to be joking.
I've had this problem for a quite a while now with the Atrix and two different batteries. I've tried dozens of combination of resetting the battery stats, running the battery completely down, and powering up without the battery and hot swapping it in. The hot swap definitely allows me to finally recharge to 100%, but once I run it down again, the problem returns. I've learned to just live with the less than 100% reading -- battery still seems to last a full 24 hours for me.
masood8 said:
First let the battery completely drain and the phone shut down by it self. Second step is to pull out the battery and leave it out for 10min, after that take a plastic bag and put the battery in it and place it in the freezer for 15min. after this palce the battery again in the mobile. make sure there is no any moisture on the battery. Then charge the phone without power on till 100%.
By following these steps this will made your battery to charge fully and more talk time
Click to expand...
Click to collapse
That trick hasn't worked since nicad batteries in the 90s, and is a really bad idea with our Li-PO.
Drain the battery till the phone shuts off, charge back up while the phone is off.
If it still doesn't get to 100%, boot into CWM, wipe battery stats and power off the phone to let it charge again.
^^ I know it works because I've done this like 2 days ago, and many times before that.
I have had this issue as well for a very long time. I've tried the pull out, question mark, 5% thing and it usually only works for one cycle, then the next only goes to 97%, then the next to 93%, then 90%, and it continually goes down until I have to do it again. Hopefully a permanent fix can be found soon. I've tried clearing battery stats, draining it to 0%, then charging it fully. I've tried everything. As far as I'm concerned, there's no fix as of right now.
Thanks man this worked like charm of 100 witches and 100 warlocks having orgy and satin worship
pre4speed said:
I too was having this issue after going from cm7 week 5, to week 8. I did what others were recommending and charged to what showed 4200mv, pulled the battery while still plugged in, put battery back in then after it showed 5%, turned it back on and Viola, 100% battery. Try it.
Click to expand...
Click to collapse
dyno0919 said:
I have had this issue as well for a very long time. I've tried the pull out, question mark, 5% thing and it usually only works for one cycle, then the next only goes to 97%, then the next to 93%, then 90%, and it continually goes down until I have to do it again. Hopefully a permanent fix can be found soon. I've tried clearing battery stats, draining it to 0%, then charging it fully. I've tried everything. As far as I'm concerned, there's no fix as of right now.
Click to expand...
Click to collapse
★ATTENTION! I FOUND THE FIX!★
Turn phone off and plug it in to a wall charger. Charge it until your notification light turns green, quickly tap the power button to check battery level. (Usually shows 90%) If the notification light turns on, but the battery indicator is not at 100%, unplug phone, take out battery and put it back in. Now plug your phone. It should be 100% now. For the final fix: go into "Android Recovery" and select "Mounts". Mount Your SD card and Emmc. Finally wipe battery stats. Reboot phone.
This method worked for me. I am 100% sure this is the fix for this problem. This has to be done every time you flash a new rom or when your phone freezes and you screw up calibration by pulling the battery while it is still on. BTW, this is my first post so don't be mean to me!
Sent from my MB860 CM7 20FEB 1.0 GHz Enhanced
xateeq said:
Thanks man this worked like charm of 100 witches and 100 warlocks having orgy and satin worship
Click to expand...
Click to collapse
Satin worship, is that like old fashioned polyester worship?

[Q] Anyone have an explaination to this battery issue?

Hey all
Well this problem has been persistent for a while now, even when I was on my phone pre root and pre custom ROM.
Phone is with Optus in Australia. The problem is sometimes when I reboot the phone(mostly when its at about 50 - 60%) and it starts back up, I end up on about 10% battery and it insist I plug the charger in. All I did was restart the phone and lost 40% battery.
The odd thing is the battery slowly ramps back up, 11%, 12%, 15% and so on, sometimes back up to about 35%
What the hell could be the cause of this? if I don't restart the phone I don't have a problem...
Heres a picture to show what I mean
Does the phone hang at bootup or shutdown? No sign of the CPU chugging away on either?
toast7989 said:
Does the phone hang at bootup or shutdown? No sign of the CPU chugging away on either?
Click to expand...
Click to collapse
Nope. Takes about 5 seconds to switch off and about 10 seconds to switch back on.
SargeRX8 said:
Hey all
Well this problem has been persistent for a while now, even when I was on my phone pre root and pre custom ROM.
Phone is with Optus in Australia. The problem is sometimes when I reboot the phone(mostly when its at about 50 - 60%) and it starts back up, I end up on about 10% battery and it insist I plug the charger in. All I did was restart the phone and lost 40% battery.
The odd thing is the battery slowly ramps back up, 11%, 12%, 15% and so on, sometimes back up to about 35%
What the hell could be the cause of this? if I don't restart the phone I don't have a problem...
Heres a picture to show what I mean
Click to expand...
Click to collapse
You can try to claibrate your battery with the app battery calibrator or following these instructions (i would recommend trying both). If it didn't help, maybe send it back to Samsung?
I would charge battery 100% .
Wipe battery stats via CWM recovery .
Charge phone again to 100% and use it for three days thats enough to recalibrate SGS2 .
Still problems you have to try another battery first .
As warranty is now void you will need to unroot restore firmware and zero custom rom counter if you need service .
jje
this is normally. i have the same. just wipe battery stats, off the phone and charge to 100% , unplug the cable, remove battery for 1-2 mins and charge to 100% again.
if i were you, i'll just flash using odin and after first boot do *2767*3855# and let it do couple of charge cycles.... that is full charge use it full charge use it.....
and stay away from any restores for couple days
remember that code will wipe you internal storage
I had the same problem before
but now it is ok
i use battery calibration by neema from market
then watch the voltage it should be 4.200
or slightly less or more then calibrate your battery
I noticed that this was occure after heavy use
and then reboot
after I charged my phone with SE vivaz charger

[q] major battery issue

Hey Guys and Gals
This morning my phone was completely drained so i plugged it into the wall plug to charge up. However it did not turn on and begin charging until i did a battery pull.
When it began charging, there was the little yellow triangle (normally there when my device has been drained). A couple of minutes after, the battery began charging BUT it was nearly full
So i switched on the device, went to Applications>Settings>About Phone>Status
There the battery read 96% and charging from AC. When i unplugged it, the numbers began literally jumping backwards and the phone died within two minutes.
I tried charging again and had to do a battery pull again. For good measure, i did a factory reset but the issue was there still, only, when it is plugged in, the battery slowly DECREASES :S maybe like 1% every 2 minutes.
Can someone please help me and let me know if it is a battery issue or a phone hardware issue itself?
Im running Gingerbread btw (downgraded from ICS about 3 weeks now because it sucked....and i missed GB lol)
crackerjr582 said:
Hey Guys and Gals
This morning my phone was completely drained so i plugged it into the wall plug to charge up. However it did not turn on and begin charging until i did a battery pull.
When it began charging, there was the little yellow triangle (normally there when my device has been drained). A couple of minutes after, the battery began charging BUT it was nearly full
So i switched on the device, went to Applications>Settings>About Phone>Status
There the battery read 96% and charging from AC. When i unplugged it, the numbers began literally jumping backwards and the phone died within two minutes.
I tried charging again and had to do a battery pull again. For good measure, i did a factory reset but the issue was there still, only, when it is plugged in, the battery slowly DECREASES :S maybe like 1% every 2 minutes.
Can someone please help me and let me know if it is a battery issue or a phone hardware issue itself?
Im running Gingerbread btw (downgraded from ICS about 3 weeks now because it sucked....and i missed GB lol)
Click to expand...
Click to collapse
Easiest way to check is to use another battery in your phone and/or to test your battery in another phone.
So you only need to find someone with a compatible phone/battery.
Or go to a store and ask for help.
Good luck !
Or use a volt meter to test if your battery is dead ie <3.7, the s 2 tends to exaggerate the value more often than shrink the percentage of battery, but your case is a bit extreme, it might have to do from going from ics to gb, don't take my word but apparently its bad to downgrade from ics to gb

Battery Only Charges to 70%

I have searched the forums but not found a thread which is similar to my problem.. I know there are battery drain issues with wifi etc but this is wierd and only started happening a few days back.
Basically i plug phone in to charge and it charges completely normally and quickly as it used to but only charges up to about 68/70% then it basically stops charging any higher, LED still red, charging display over battery still there. Turning phone off, rebooting, unplugging and plugging charger back in all makes no difference!
Any ideas what could be the cause of this? how to resolve?
I'm on stock JB, using the official wall charger and USB cable and i made sure the battery was full when i updated to JB as well.
Try a different battery, these are getting to the point where some will start to fail, six month warranties on batteries for a reason.
Well i have a £1.99 spare battery in atm as i run the original battery completely flat today. Seriously though be surprised if battery fail after 3/4 mths - never had battery dying issues on previous phones i've had until they were a good 2/3 years old.. Always a first though LOL
Its like the battery is saying its fully charged at 70%, now its completely flat i will charge it overnight with the phone off to full (if it gets there) and see if is resets the battery callibration or something.
Try to wipe battery stats via cwm recovery/advanced.
ohyesman said:
I have searched the forums but not found a thread which is similar to my problem.. I know there are battery drain issues with wifi etc but this is wierd and only started happening a few days back.
Basically i plug phone in to charge and it charges completely normally and quickly as it used to but only charges up to about 68/70% then it basically stops charging any higher, LED still red, charging display over battery still there. Turning phone off, rebooting, unplugging and plugging charger back in all makes no difference!
Any ideas what could be the cause of this? how to resolve?
I'm on stock JB, using the official wall charger and USB cable and i made sure the battery was full when i updated to JB as well.
Click to expand...
Click to collapse
if you are rooted than download batterycalibration and untick 100% charge and click recalibrite and leave the phone on charge and it should charge up nto 100%
https://play.google.com/store/apps/...ration&feature=nav_result#?t=W251bGwsMSwyLDNd
Shery4life said:
if you are rooted than download batterycalibration and untick 100% charge and click recalibrite and leave the phone on charge and it should charge up nto 100%
https://play.google.com/store/apps/...ration&feature=nav_result#?t=W251bGwsMSwyLDNd
Click to expand...
Click to collapse
This app just wipes battery stays, so you can do same by going to cwm/advanced/wipe battery stats.
jnr21 said:
This app just wipes battery stays, so you can do same by going to cwm/advanced/wipe battery stats.
Click to expand...
Click to collapse
It has nothing to do with wiping battery stats. I think Kangburra is right...
UPDATE.
Shamed to say that i am not rooted yet... I have been there and done all that on my old phone ZTE Blade, but i really like the added functions that TW brings and don't suffer much in the way of anoying redraws or lag etc (although i do feel that TW could be optomised alot better along with better RAM Management)
I was going to at least root to sim unlock but got a sim free unlocked phone so had no need, then other stuff i wanted to do like freeze samsung apps etc is all possible without root and i've not come across that "I" need root at the moment.. was going to for APPS2ROM but i got no need to free up space yet.
Cheers for the suggustions though - I have that battery callibration app already (from old phone days) obviously don't work though.
Anyway - I am monitoring battery atm but it seems that running the battery completely flat until it turned itself off and charging overnight with battery off has resolved this issue - maybe this reset the battery stats and recalibrated it.
Its back to normal now, charges upto 100% as normal!! Fingers crossed this was just a blip

[Q] help please: erratic battery levels/reboots

Although there are similar reports of battery issues, I haven't found anyone with the same issue. I have an SGS2 running 4.0.4 - all stock and although I'm on Orange, it's not an Orange handset. It's just over a year old.
Since being on 4.0.4, I've noticed the battery level drops when I switch it back on/reboot. It has been dropping by 20-30% but recently it's been dropping all the way to 1%. It has also taken to switching itself off with no warning (or shutdown) - I can only assume because it suddenly thinks the battery is at 0% despite what it was seconds beforehand.
As a typical example, it was charged to 100% (4200mV as shown via *#0228#). After a few hours standard use, it was around 60%. Then, seemingly when I'm doing something intensive like recording video or downloading something over a data connection, the screen goes off and I realise it's dead. I restart and the "battery critical" warning comes up - 1%. It dies again and I remove the battery for a minute, put it back, then power up. This time it says 9%. Then after a short while it dies again. So I connect the charger. After a couple of seconds, the battery charging indicator shows about a 1/3rd full. I switch on and the battery is now at 46%. Whatever the issue, reattaching the charger seems to rescue it - even if it's not back to the original level. The charge levels (in mV) seem to match the percentage.
This happened so much that a few weeks ago, it wouldn't even start and I had to wipe and reinstall everything. It does work now, but still crashes at least once a day. I'm not sure what else to do other than wait for Jelly Bean and hope that will miraculously fix the problem.
I have attempted "battery calibration" though it's a bit difficult - and I've read that it doesn't actually work anyway.
I am a noob - so please treat me like an idiot in case I've missed something obvious.
Thanks.
Dude, I believe it's time to buy a new battery.
1.Battery Calibration apps don't work(They don't do anythight good) Battery calibrates selfs...
2.I think that your battery is dead like my (Buy one it cheap)
3.And I think too that Insane gauge chip is very crazy...(You can reset it maybe helps... need flash Syiah and Get Stweaks)
I have the exact same problem, see this thread: http://forum.xda-developers.com/showthread.php?t=2062056
Tomorrow I will buy a new battery, I can tell you if this will help me out
Yup, battery calibration is a myth. Google already states that you do not need to reset your fuel gauge for ICS/JB devices. All battery parameters are automatically reset when it's 100% charge.
Sent from my GT-I9100 using Tapatalk 2
Thanks
I've ordered a new battery which I should have later this week. Let's see if that does anything useful. In the meantime, I'm attaching some battery meter screenshots to illustrate the problem.
Thanks for your suggestions so far!
xdanoober said:
Yup, battery calibration is a myth. Google already states that you do not need to reset your fuel gauge for ICS/JB devices. All battery parameters are automatically reset when it's 100% charge.
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
No, this dont apply for us. Google stated that is useless wipe battery stats, the didnt say anything about our fuel gauge chip
Enviado desde mi GT-I9100 usando Tapatalk 2
Solved
:victory: New battery installed and, 24hrs later, no crashes or glitches. My phone's as good as new. Thanks for the suggestions folks!:victory:
My battery went from 50% to 15% after a reboot.
The bizarre thing, though, was that I watched it increase from 15% to 20% charge even though it was not plugged in.
Weird...
Mr Anderson said:
My battery went from 50% to 15% after a reboot.
The bizarre thing, though, was that I watched it increase from 15% to 20% charge even though it was not plugged in.
Weird...
Click to expand...
Click to collapse
fuel gauge.

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