Database Develop

Battery percentage problem

My SGT is having a strange battery percentage problem. The battery was at 95% and the unit was on flight mode last night with no apps running. This morning it was dropped to 78% (over about 6.5hrs). So I turned it off and restarted, the battery percentage was back to 94%.
For some reasons, the battery percentage is dropping way too fast until I restart the unit, it seems like android is reporting a wrong battery percentage. Or could it be the battery? Does anyone experience the same problem? Any solution? And what is the normal power consumption under flight mode for other SGT user?
I just did a hard reset (wipe cache/data and reset to factory) to see if it helps and I am not installing any apps just to keep it in stock condition.
Thanks!

Generally, about 3% lose of bettery during the whole night with mobile on, while power meter may go wrong on Android devices, for example XT701 is.
Sent from my GT-P1000 using XDA App

So the XT701 has the same problem? How do they resolve this?
I start to think if I should take it to Samsung for repair.

Any help guys??
Would flashing a new firmware help the situation? I am tired of rebooting the tab so often just to get the right battery percentage report.
Other than this issue, the tab is PERFECT. I just wanna get this over with and enjoy using it.

Still looking for helps.....

Galaxy Grand Quattro: battery is fine, just the prob is with the indicator
Galaxy Grand Quattro : while charging it suddenly jumps from 78% to 100% and asks to unplug the charger. When i unplug it it shows 78 or 80% back again !!! I believe that this is related to software issue. So i have done a factory reset, but no use. someone pls help if this is a known issue.. Googled abt it but dint fine anything there.. Thanx in advance.

hackcookie404 said:
Galaxy Grand Quattro : while charging it suddenly jumps from 78% to 100% and asks to unplug the charger. When i unplug it it shows 78 or 80% back again !!! I believe that this is related to software issue. So i have done a factory reset, but no use. someone pls help if this is a known issue.. Googled abt it but dint fine anything there.. Thanx in advance.
Click to expand...
Click to collapse
Have u tried a different charger? It might be the charger not working as supposed. Also how old is the battery and is it an OEM? It might be old and not working right also
Sent from my Nexus 4 using XDA Free mobile app

alwaysbmx said:
Have u tried a different charger? It might be the charger not working as supposed. Also how old is the battery and is it an OEM? It might be old and not working right also
Sent from my Nexus 4 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for the response this prob is solved.. prob was with the cable..anyways tnx for the reply.. take care
Sent from my GT-I8552 using XDA Free mobile app

Sudden battery drop down

Hello,
I was wondering if anybody else experiences this behavior:
From time to time the battery of my Galaxy tab drops to 3% (at least this is what Android tells me). I noticed that this often happens when a view change takes place and when I simultanously press the volume control down. Today it also happened on a view change when I was using Skype. When I reboot the device it's showing a normal battery level again (e.g. 43%).
I wonder if this is a hardware issue or if it's a software bug. Anybody experiencing this,too?
Sent from my GT-P1000 using XDA App

Are you rooted/unlocked/rerom'ed at all?
There are various methods to resetting the batteries calibration, but it just depends on what brand you have/what you've done to it.
This is a fairly common problem, and for the most part can be solved easily.

Hello,
no, it hasn't been not rooted yet. Do I need to root it before I can recalibrate the battery?
Sent from my GT-P1000 using XDA App

Ok, there is an app and I need root for it to work. Seems it is solved now.
Sent from my GT-P1000 using XDA App

loonyt said:
Ok, there is an app and I need root for it to work. Seems it is solved now.
Sent from my GT-P1000 using XDA App
Click to expand...
Click to collapse
Which app are you talking about ? I have a very similar problem -- battery suddenly goes from ~30% to 1%, the tab starts screaming that I should connect to the charger, and (sometimes) shuts off. If I then wait 10 minutes, the battery will show again 30%, and it might run for awhile, go to 1%, where it will happily "run" (albeit doing nothing) for *HOURS*.
I'm rooted, have BatteryCalibrator installed and run it (I charged it fully, ran the calibrator, and am waiting for it to completely drain -- so that it wont even turn on, to charge it up again). So I'm wondering if you've really fixed this, and how.
I've contacted Samsung about my problem (the tab is about 6 months old) and they told me to do a full reset (special key sequence in telephone -- dont know if this is different from the "factory data reset" in Settings->Privacy).
I haven't done anything with this rooted phone yet, as it has unlocked everything, and I want to make sure I understand how to go back to a fully unlocked state before attempting to update (running XWJJ7). I also dont want Samsung to update it if I have to return it for warranty service....

[Q] Battery Issues / Questions

I read through quite a few of the battery issue threads but would still appreciate specifc advice on the issue I am having with mine.
I already couple times did the stats wipe as per the tweak guide on OT site but do not seem to have any benefit from doing it.
I am encountering the following issues:
Charging
Charging is very finiky. If i am charging in operation or while turned of the tab will seem to stop charging at certain levels of charge between 70% and 95%. If it happens while charging turned off I need to disconnect and reconnect in order to coninue charging, sometimes a few times.
If it happens when in operation similar will happen but also when the charge is reported at 100% I tun off the tab only to find out that the charge level reported by the off battery icon is not 100%. On different occasions it displlayed anywhere from 80 to 95% (estimated). Dont remember ever seeing it at 100%.
Discharging
If I turn on flight mode overnight I will get almost no discharge all night 0%-1% which seems very cool but my normal use is really wireless thethering. I just started not even 10 minutes ago from 100% charge and already at down to 90%. Just playing a game or browsing or reading the forum using the XDA app can completely discharge the battery in less than 2-3 hours. All of this in spite of the fact that I am on Jupiter, UC and UV heavily. I also manualy been stopping running services like skype and yahoo messenger.
I am afraid this could be a a battery hardware issue but would appreciate a confirmation or a suggestion of what else I can try before restocking and going to the service center to get the battery replaced.
Maybe you could advise which system apps I can freeze with Titanium and still be able to maintain wireless tethering and phone functions. Maybe an advice on a task killer and what I can and can't kill to keep the mentioned functionality.
While writing this post I lost 8% charge!!!

Dont get any task killers they kill system process then the system has restart them which kill battery. Have you tried wiping batterystat.bin when below 10% and charging to 100% while powered off.
Sent from my GT-P1000 using XDA Premium App

Or try backing up data and restocking and installing the WIPE version of
Jupiter or of kratos.
Sent from my GT-P1000 using XDA Premium App

aliaksei said:
Or try backing up data and restocking and installing the WIPE version of
Jupiter or of kratos.
Sent from my GT-P1000 using XDA Premium App
Click to expand...
Click to collapse
thanks mate, I always restock and do the wipe version. currently on Jupiter and will soon be moving over to Kratos. Reading good stuff about it.
aliaksei said:
Dont get any task killers they kill system process then the system has restart them which kill battery. Have you tried wiping batterystat.bin when below 10% and charging to 100% while powered off.
Sent from my GT-P1000 using XDA Premium App
Click to expand...
Click to collapse
The only way I would install a task killer would be if I could get someone to tell me which tasks to ignore so I wouldnt get this issue. No have not tried the below 10% wipe but will do so since you mentioned it. In the Kratos thread somebody mentioned to let it completely discharge and then without connecting to boot into CWM and let it further discharge. Aparently a system full discharge is not a full discharge and there is another couple hours juice left in the battery to keep the CWM going. Would this be a good idea?

Thanks to the helpers and to all you readers I think I found the issue. It seems to be a hardware problem but not with the Tab. The problem was with the charger.
I accidentally came across a car charger, bought it, used it to partially top up a couple times in the car and right away the Tab seemed a bit different. So I went back and bought a mains charger plugged it in last night and for the first time in quite a while it charged to 100% and it happened within expected time. Put it on charge at 1.30am and it was at 100% at 5.30am when I woke up.
Dont think it will effect the drain much but it is definitely giving me more juice to start with.

Oops!
Sent from my GT-P1000 using XDA Premium App

After running Kratos for quite a while with my new chargers and recalibrating by the book I am getting the expected level of battery juice. The tab charges efficiently to100% every time.
Drain is still an issue for me though. If i set airplane mode overnight (8hours) it will loose 1% charge but 9%-10% without airplane mode. On standby and in use the drain is consistant and fast. Not even UC and agressive UV helps.
I did a lot of app freezing and it realy doesn't make a major difference. Normaly I have only 4 services running. Settings, Google Services, AnySoftKeyboard and Google Maps.
I don't think I had the same drain on Hermes even though i didnt UC, UV and had at least a dozen services running. Think my battery life was better while others were complaining about wifi reconnection issues. ASAP I will try going back to Hermes to either confirm the issue with Jupiter/Kratos or to just accept this as normal and shut up.
Sent from my GT-P1000 (Overcome, Kratos) using XDA App

I finaly narrowed down the battery issue.
When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
It has been suggested to change the modem. I am curently on JPZ. My GT-P1000 was originaly purchased in Saudi and currently, until my next contract who knows where in the world, using it in Croatia.
A suggestion on the most battery efficient modem that works globaly would be appreciated.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App

MutantWizard said:
I finaly narrowed down the battery issue.
When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
It has been suggested to change the modem. I am curently on JPZ. My GT-P1000 was originaly purchased in Saudi and currently, until my next contract who knows where in the world, using it in Croatia.
A suggestion on the most battery efficient modem that works globaly would be appreciated.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App
Click to expand...
Click to collapse
FYI - Kratos Overcome ROM has(or had, there's a new one out today and it might fix this?) a bug with wifi where that if you leave the network and then reenter it without manually turning off then on the wifi, it will constantly reconnect(or something) and burn battery like mad.
For now I just flip the wifi off/on again when i connect to a new wifi since i didn't want to leave Overcome. Hopefully the new one fixes it.
---------- Post added at 07:05 AM ---------- Previous post was at 07:04 AM ----------
and by leave/reenter network, i mean physically walking outside the network range until it disconnects, not disconnect/reconnect through the tab settings.
It may only happen moving from one network to another (i go from home wifi to work wifi to home wifi each day).

Mate thanks for the reply but think you misunderstood. I dont have an issue with wifi. My issue is with 3G/mobile network over SIM card. That one burns the battery.
Sent off the Blue Marble using GT-P1000 on Kratos via XDA App

darkmattar said:
FYI - Kratos Overcome ROM has(or had, there's a new one out today and it might fix this?) a bug with wifi where that if you leave the network and then reenter it without manually turning off then on the wifi, it will constantly reconnect(or something) and burn battery like mad.
For now I just flip the wifi off/on again when i connect to a new wifi since i didn't want to leave Overcome. Hopefully the new one fixes it.
---------- Post added at 07:05 AM ---------- Previous post was at 07:04 AM ----------
and by leave/reenter network, i mean physically walking outside the network range until it disconnects, not disconnect/reconnect through the tab settings.
It may only happen moving from one network to another (i go from home wifi to work wifi to home wifi each day).
Click to expand...
Click to collapse
So to understand what you are saying explicitly.
At home I connect to WIFI -- XXZ.. Its already a remembered network. I drive away from home and come to office here WIFI is YYZ (Already remembered network). So it automatically connects. THIS CAUSES the batt drain????
If yes, I am extremely happy. Coz I dont turn off WIFI it connects at home n office automatically. Please corroborate!
Al

> I finaly narrowed down the battery issue. When on wi-fi i will get up to 3 days of battery life but only up to 16 hours on 3G.
I think that is normal standard consumption. 3G is known battery hog and you cannot compare its runtime vs. wifi. Is 3G on all the time, or maybe you attempted to use interval disconnectors (ie. battery saver apps) like JuiceDefender, Green Power, the likes?

Thanks jtdc!
I move around the world a lot and rarely set up wifi so most of the time I am full time on 3G. I dont use any power saving tools like you mentioned. Insted I use Titanium to freeze any apps that unnecessarily show up in running services.
I only noticed the differwnce with wifi due to an exteded visit with a relative who has wifi in his house. It wont be long and I will again be full time on 3G and would realy like to extend the battery life by minimum 4 hours. Are you aware if there is a known difference in power consumption between different modems or if any of the tools you mentioned can deliver this kind of savings purely by managing the 3G operation?
Sent off the Blue Marble using GT-P1000 on Overcome 7, v4 via XDA App

if any difference of modems that would be minimal to negligible. what always comes as the factor is the strength of signal and of course the tab which always scans for it whenever you're on the move. what you experience is typical, and in best case good because 16 hours on 3G always on? your battery and tab must have been setup really well.
if you can bear with interval disconnector apps like i mentioned, it would increase your runtime. for instance you can have the app connect every 15 minutes to 3G then be online for at least a minute to have all your internet dependent apps sync (email, messages, news, etc) and have traffic threshold detection in case in a minute some transfer still ongoing, then maybe 2 minutes is long enough. then for the next 15 mins 3G is off, then it will repeat the cycle. in that manner there's quite a lot of power to be saved and will definitely extend your runtime.
if really no other choice, i suppose you need to buy an external battery solution, the likes of energizer xpal, so you won't have to worry about battery life.

Great, thanks, that solution is acceptable for apps that require data services. Can you recomend an app to use for setting it up.
I expect it would prevent me from using inbound calls via Skype but how would using such an app impact incoming sms service and voce calls? Would they come through and would voice call quality be impacted.
Sent off the Blue Marble using GT-P1000 on Overcome 7 v4 via XDA App

"Green Power" in android market does the job and its free, that takes care of data connections (wifi or 3G) and will not tinker with the GSM radio, therefore sms and voice calls are untouched. The other app "Juice Defender" you can customize even to turn off the GSM radio, even downlclock the cpu, etc. which will result more savings but is a paid app.
Let us know how that helped to increase your runtime

[I9001] random switch-off galaxy s plus

Anyone experiance it? As i read on gsmarena comment, many experiance it...did anyone manage to solve the issue?
Sent from my GT-I9001 using xda premium

If you would specify what ROM you are using, it might be a bit more specific.

wintel_mac said:
If you would specify what ROM you are using, it might be a bit more specific.
Click to expand...
Click to collapse
Nop...i already try 2 stock and a custom one...still same, sometimes after play games...sometimes it just shut off when its lock...as u mention above, not only me...read others post here http://m.gsmarena.com/samsung_i9001_galaxy_s_plus-reviews-3908.php
Maybe its i9001 faulty somewhere...
Sent from my GT-I9001 using xda premium

Can anyone suggest a stable stock rom?
Sent from my GT-I9001 using xda premium

I have been using XXKPU for a while, it was quite stable but is now very old. At the moment, using XXKQ7 for some time. Also quite ok. Maybe your hardware is faulty.

I never had this kind of problem . i'm using kqe custom rom and i have no problems.

[9001] Samsung Galaxy S Plus i9001 random turn off
I have same problem with my i9001. I bought it in march, and it started to turn off randomly in june.
I used 3 different stock ROMs and CM9, and had this problem in everyone of them. I took phone to service, but they didn't find out what was problem (they told me that it is probably faulty internal memory, but new memory and repair for 45e wasn't acceptable for me)
This turn off happens to me usualy when phone is locked and idle. One time it happened on CM9 startup, and only one time phone was active (I was just browsing apps) when it turned off.
When it turns off sometimes it wont turn on for hours. It very rarely helps to take out battery and wait for 10 or more seconds and then put it back.
I noticed few times when it turnes on that on startup screen instead of SAMSUNG (first screen) it shows battery picture as it is when recharging even if phone is not connected to computer/charger.
I also noticed that reported battery is somehow strange. For example one time I recharged phone to 100%, and somewhere about 85% it turned off. I left im over the night, and in morning I turned it on and battery was on 6%. Same happened again with 55% going to 6% in just a few hours.
I found a way to turn it on, but this way is totaly strange and stupid. I take out battery, connect phone to computer with USB cable (as usual for data transfer and recharging), and then place battery. For now, I managed to turn it on this way most of times (which would be about 10%, 10% everything else, and 80% fail to turn on )
I have no idea what causes this but it probably isn't OS, kernel, apps, root/unroot and rest of possible software reasons.
Does anybody know what is actualy the problem with i9001 turning off randomly? And how to fix it?
Sorry for my bad English (I actually dont care )
edit: I tried following ROMs (all could be found on http://forum.xda-developers.com/wiki/Samsung_Galaxy_S_Plus/GT-I9001
I9001XXKQ6 XXKPK
I9001XXKQB XXKPL
I9001XXKQE XXKPL
CyanogenMod9 (update-cm-9-20120606-SNAPSHOT-ariesve-alpha4-signed.zip)

uqdesign said:
I have same problem with my i9001.
...
This turn off happens to me usualy when phone is locked and idle.
When it turns off sometimes it wont turn on for hours. It very rarely helps to take out battery and wait for 10 or more seconds and then put it back.
I noticed few times when it turnes on that on startup screen instead of SAMSUNG (first screen) it shows battery picture as it is when recharging even if phone is not connected to computer/charger.
...
Click to expand...
Click to collapse
I have the exact same problem, once or twice a day the phone just switches off.
I use Broodrom RC5 currently.
Sometimes I see random green pixels across the screen before it turns off as well.

[Q] [Help] Screen flashes until phone crashes

Hi, I have a Galaxy Note GT-N7000. I bought it on feb 2012 and I never have this problem.
My problem is that the screen start flashing until the phone crashes and turns off. When I reset it the problem keeps going. I tried changing the ROM (I have been using oficial roms for almost a year) but never happend (I think that is a hardware problem). The problem is becoming more frecuently, now I have it at least once a day. The problem solves when I plug the phone to the AC.
Sorry for my poor english and I record a video so you can understood what I'm saying. When the phone crashes the screen gets freeze or turns off.
Thanks!

Thats a battery problem... Replace your battery..
Sent from my GT-N7000 using xda app-developers app

I think k it's is a charger use needs to change
Sent from my GT-N7000 using xda premium

It has now become a common problem .Bro seems your battery is having problem as mine had too. I replaced my battery and everything has been working fine. BE SURE TO USE THE ORIGINAL SAMSUNG BATTERY . If your warranty is valid claim it. My battery was swollen up to 1.5 times the actual size, check if ur has too..

Time to buy a new battery