Restart the phone and suddenly battery has half of the juice! - Galaxy S II Q&A, Help & Troubleshooting

Hi all, as the description says it's quite weird. While I have let's say 56% battery and for some reason I restart the phone, then suddenly after booting it show I have 18%!!! (screenshot attached)
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I have latest 4.0.4 official UK unbranded firmware and it happened on 4.0.3 too. I have tried factory reset and doing a battery cycle.
Could it be a pure battery problem or may it be a bug? Anyone else has this problem?
Sent from my GT-I9100 using xda app-developers app

I also have this problem... It's a huge issue for me! Constantly having to recharge! grrrrrr!
I'm running 4.0.3 UHLPK

Have you tried recharging to 100%, taking battery out for at least 3 mins (180 secs), then allowing full discharge?

oddlyshapedstickman said:
Have you tried recharging to 100%, taking battery out for at least 3 mins (180 secs), then allowing full discharge?
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Yep tried that. Tried anything I can think of.

Yes I have tried all those battery tips in general...even tried to leave the battery disconnected from the phone for one night after doing a full discharge and them charge with the device turned off.
Sent from my GT-I9100 using xda app-developers app

Urannous said:
Hi all, as the description says it's quite weird. While I have let's say 56% battery and for some reason I restart the phone, then suddenly after booting it show I have 18%!!! (screenshot attached)
View attachment 1288706
I have latest 4.0.4 official UK unbranded firmware and it happened on 4.0.3 too. I have tried factory reset and doing a battery cycle.
Could it be a pure battery problem or may it be a bug? Anyone else has this problem?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
It's normal. The fuel guage chip in GSII doesn't need calibration, but the downside is sometimes after rebooting below 60-50% battery it can show wrong battery info.The battery still has power just reporting is wrong. If you wait for sometime you'll see the battery climbing back to pre reboot state.
So DON'T PANIC normal operation.

Restarting the phone resets the fuel gauge. If you leave it for a while, the battery will come back

Thanks for the replies!

Related

(Q) Lost 25% ina few seconds. WTF?

title says it all really everytime my phone is around the 30-40% range it drops suddenly to 19% always to 19% and I have no clue why I've calibrated, wiped and did a restart while plugged in battery pull and still nothing.
Any suggestions?
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Sent from Atrix 4G running CM7 ICS Final @ 1.2Ghz
Try to see which applications are running and what is more consumundo battery.
And also recommend that you calibrate. Me, whenever I do this procedure, I have a good improvement in autonomy.
Does this happen across different ROMs? You might have a bad battery.
DopeHack said:
title says it all really everytime my phone is around the 30-40% range it drops suddenly to 19% always to 19% and I have no clue why I've calibrated, wiped and did a restart while plugged in battery pull and still nothing.
Any suggestions?
Sent from Atrix 4G running CM7 ICS Final @ 1.2Ghz
Click to expand...
Click to collapse
I only flashed once never switched roms
Sent from Atrix 4G running CM7 ICS Final @ 1.2Ghz
Use Better Battery Stats and Watchdog Lite to see whats happening. In watchdog lite u can set the cpu percentage max to be 20% so that anything going beyond that can be reported. Usually works for me.
Sent from my MB860 using Tapatalk
live4nyy said:
Does this happen across different ROMs? You might have a bad battery.
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I think it might have been the state my battery was in when I flashed the first time because it hasn't done it yet and I was rom surfing last night nothing out of the ordinary happened I'll report back after work tomorrow that should be a good enough time to test it out
Sent from my Atrix-4G, stock 2.3.4 (rooted)
Can anybody help me with this?
Sent from my Neutrino'd out Atrix @ 1.3Ghz.

Phone not switching on: Battery and phone very hot

Just woke up and my phone is boiling, especially touchscreen and battery. Its not switching on, I left it on charge like I do every night.
Just to let you guts know, never flashed or rooted my s2. Its still on 2.3.4 with kernel 2.6.35
Turn the phone off remove battery and let it go cold .
Then connect to Samsung charger and see what happens .
Problems
One factory reset after backing up data .
Two try a another/new battery
Three return to service .
jje
Try with another battery, I'm pretty sure that that will help
Sent from my sgs2 running cm9 using xda app
Thanks guys, got another battery and it worked.
Anyone know the cause for this happening?
Sent from my GT-I9100 using Tapatalk
gma388124 said:
Thanks guys, got another battery and it worked.
Anyone know the cause for this happening?
Sent from my GT-I9100 using Tapatalk
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Please do not leave your phone on charge for the whole night..it doesnt help at all..and follow the above reply..they are sure to look out for
gma388124 said:
Thanks guys, got another battery and it worked.
Anyone know the cause for this happening?
Sent from my GT-I9100 using Tapatalk
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We've had it happen when a app has "hanged" and not closed on Gingerbread. Haven't had it happen yet on ICS *touch wood* .. phone gets hot and huge battery drain quickly.. even while on charge.
Maybe a recent app you have installed has caused the hang?
leaving your battery on charge overnight is NOT the problem
I posted this few days ago, I'm having another problem now, unsure if its linked to this. But occasionally when phone on charge, I'm getting a pop up notification saying 'battery paused, temperature too low or hot'
This happens regardless of the battery or charger. I've taken screen shots of they help. Battery temp is 67 with condition over over heating. How do I solve this
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Bump, anyone?
Have you a bumper on the phone or other case protection ?
Depends on which battery I use, if its the official 2000 mah battery then I use a cheap £1 mesh case. If its the standard battery then I don't use any. The extended battery is now charging.
A friend with a phone shop told me to warm the batteries up before putting them on charge and to my surprise its worked, weird since batteries were saying over heating

Battery drop after restart

So as the title say. Battery dropped from 50 to 17 percent after a normal restart. And it wouldnt go back up.
What is happening??
Thanks guys
cMIUI+ SIYAH
NZed said:
So as the title say. Battery dropped from 50 to 17 percent after a normal restart. And it wouldnt go back up.
What is happening??
Thanks guys
cMIUI+ SIYAH
Click to expand...
Click to collapse
charge ur phone to 100% then try resetting the Fuel gauge chip in extweaks then reboot ur phone and wait for a cpl of hrs then ur batt starts showing near correct %
Full batt charging and reboot is not necessary. Simply go to ExTweaks, reset fuel gauge chip and wait few hours. Your battery percentage will increase.
przemcio510 said:
Full batt charging and reboot is not necessary. Simply go to ExTweaks, reset fuel gauge chip and wait few hours. Your battery percentage will increase.
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Click to collapse
I am having the same problem but apparently Extweaks doesn't work with my kernel.
Is there another solution?
pcbilski said:
I am having the same problem but apparently Extweaks doesn't work with my kernel.
Is there another solution?
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Click to collapse
Charge your phone untill you're sure that it reached 100%. Turn of your phone, remove the battery for a minute, put it back in and reboot your phone again.
Sent from the Matrix
Donnie Sins said:
Charge your phone untill you're sure that it reached 100%. Turn of your phone, remove the battery for a minute, put it back in and reboot your phone again.
Sent from the Matrix
Click to expand...
Click to collapse
Thanks. I did that and used the battery calibration app, seems to have worked.
pcbilski said:
Thanks. I did that and used the battery calibration app, seems to have worked.
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I've been experiencing the same problem with my SGS2's battery and noticed that it is getting bloated. I purchased a new one to prevent severe damage on my mobile phone.
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ielle227 said:
I've been experiencing the same problem with my SGS2's battery and noticed that it is getting bloated. I purchased a new one to prevent severe damage on my mobile phone.
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Where did you getthe battery? Can you pm me the link?

Battery indication problem

I have a problem with my s3's battery indication. Sometimes the battery is stuck at a certain level and does not go down regardless of usage. But when i restart my phone, the indication becomes correct. So far i have encountered this problem only 3 times so its nothing major. Has anyone else experienced this? I guess its a software issue. I'm currenty on stock rom and not rooted.
Sent from my GT-I9300 using xda premium
gian84 said:
I have a problem with my s3's battery indication. Sometimes the battery is stuck at a certain level and does not go down regardless of usage. But when i restart my phone, the indication becomes correct. So far i have encountered this problem only 3 times so its nothing major. Has anyone else experienced this? I guess its a software issue. I'm currenty on stock rom and not rooted.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
Pull battery out for 5 mins
Sent from my GT-I9300 using xda app-developers app
I just had this problem today with my i9300.. Me and my friend were out hiking, i was using my tracks and taking a few photos, we got back to my place and he asked "what is your battery out" I pulled it out and said 39% then went "Woah i left and it was at 39%" two hours worth of hiking and the battery didnt drop 1%??? so we were looking at our stats for about 20 seconds on mytracks and then we finished so i put it back into my pocket after turning off the screen then 5 seconds later the phone made that 'time to charge' sound and i pulled it out and it was at 10%. i was like.. wtf? it was 39% then 10%! First time I've seen it do this. No root, or custom rom, just stock UK rom from last month...
This problem is with my phone too, but the battery stats show the correct percentage.
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Wipe dalvik and cache, and charge your phone to 100% while its off and then enter recovery and reset battery stats.
Has happened to me a few times but this trick usually fixes it
Sent from my GT-I9300
drknezz said:
Wipe dalvik and cache, and charge your phone to 100% while its off and then enter recovery and reset battery stats.
Has happened to me a few times but this trick usually fixes it
Sent from my GT-I9300
Click to expand...
Click to collapse
Already tried that with no success.
Sent from my GT-I9300 using xda premium
Doesn't reseting your phone fix this? Because i just reset mine and its back to normal. How often does this happen to you?
Sent from my GT-I9300 using xda premium

[Q] My battery drains in 1-2 hours, takes longer to charge...

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I have the stock CM10 rom installed, and it usually does something like this that only lasts for a few days and goes back to normal. But this has lasted for almost a month now. As you can see in the pic, sometimes its says charging but doesn't "gain" energy, and when it does in drains extremely quickly. When it is asleep or turned off it still drains. I tried charging it with a different cord, then with my computer. Then I tried using a GS3 cord & adapter, it charged faster, but I couldn't tell how fast it drained since I wasn't using it.
Do I need to replace the battery? If I do, will it cost a lot, because if it does I'm just going to get a Note or DNA....
Try using a battery calibration app, people say to use it when you flash a new rom. Also, it might be an actual problem with the battery itself. Try getting a replacement battery if so. But then again, before you do that try going to stock and see if the problem is still present.
Sent from my YP-GI1 using Tapatalk 2
once it charges I'm going to see if that will help. and my son deleted my stock rom (long story), so I'm stuck on jb/ics.
Also its recommended after you calibrate to drain the battery to 0% and then recharge to 100% afterwards. And as far as the stock rom goes, you can restore using Odin and download mode
Sent from my YP-GI1 using Tapatalk 2
wow it worked, the battery lasted from 5:30 to 7:10, a new record since I ever brought the device
coolwiththecool2 said:
wow it worked, the battery lasted from 5:30 to 7:10, a new record since I ever brought the device
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How much screen on time did you get?

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