For questions related to batteries on Android devices. Questions about battery life should be tagged with [battery-life]

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2
votes
0answers
18 views

Battery Drain from mysterious wake locks

I have an huge battery drain issue on my OnePlus One running Android 4.4.2 on stock ROM CM11s O5Q with FrancoKernel R35. I googled and searched so many times but couldn't find anything and I am really ...
0
votes
3answers
2k views

Samsung S duos - showing charging symbol but percentage not increasing

I have samsung s duos. Suddently one day, when i was charging .. though the indicator shows charging, the battery level keep going down. I restarted mobile... still same issue. Then i tried with ...
0
votes
0answers
11 views

Battery life indicator issue on Alcatel One Touch Fierce 2

I have Alcatel One Touch Fierce 2. When I charge my phone to 80%, within 10 minutes it's on 75, and as soon as it hits 50, it drops down to 1 and up and down over and over again. What's wrong with my ...
0
votes
0answers
19 views

SGS2: Terrible battery life, I've tried everything I could think of

About 2 months ago, my gf started experiencing an odd problem with charging her Samsung Galaxy S2. While it was connected on charger and on stand-by, it would charge only 5% in like 2-3 hours. ...
4
votes
1answer
964 views

Download Manager causes high CPU usage on Motorola Razr with stock Android 4.0

My Razr (Stock ROM 4.0) is very very hot. After some research I found com.android.providers.downloads is responsible, since it's using about 60% of CPU. I have tried killing it, and it respawns, ...
10
votes
6answers
37k views

What can cause “Android OS” process to use high percentage of battery?

I've read a bunch of forum posts about the Android OS battery drain bug. This is where the 'Android OS' process is showing large percentages in the battery statistics. For me, I'm running 2.3 ...
2
votes
8answers
4k views

Is it possible to remove the battery percentage on my Samsung S5?

I have a Galaxy S5 running 4.4.2, unrooted. In the top indicator bar, there is an icon of a battery, and a percentage of remaining battery life beside it (not inside of it, as I've seen other people ...
3
votes
2answers
7k views

Why doesn't my phone charge?

Okay, so I already ordered a new battery, but in the mean time. Why won't my phone charge? I have tried every charger/cable in my house and car (over 10 chargers and around 15 cables). Double ...
0
votes
0answers
27 views

Battery percentage shown in lockscreen while charging is incorrect

I have a Samsung Galaxy S-III (rooted & running 4.4.4) with a peculiar problem. According to the Notification Bar toggles, the battery percentage is 82%. The same is shown in Settings > ...
0
votes
1answer
28 views

Network quality related battery discharge

I'm seeing a ridiculous battery drain on my Android/Samsung Galaxy S4 seeming to correlate with network traffic/signal change (see images below). Please keep in mind that the phone sits idly on my ...
0
votes
1answer
20 views

How can I have my device charge only when battery is below a given percentage?

So I've mounted my Nexus 7 onto a wall and use it as a sort of info screen / home automatisation device. Now this would require the screen to be on all the time which is why I want it to be connected ...
0
votes
1answer
36 views

My battery dies very quickly [duplicate]

I've had this issue a couple of months ago too but then I could fix it by turning off an option at my WiFi settings. Now the problem is back but it my previous solution doesn't work. I own a Samsung ...
0
votes
1answer
62 views

battery drain AFTER kitkat update

On Samsung S5 AFTER installing KitKat last week, the mm-qcamera deamon usage has drain down full battery in 7hours (before update 12+ hours uptime was the average. Hopefully an urgent fix is coming. ...
0
votes
0answers
15 views

Battery calibration myths [duplicate]

I have read loads of articles on battery calibration, but I have trouble finding any consistent information. Is calibration even necessary? I mean doesn't android do it automatically, surely it ...
0
votes
1answer
1k views

How to save battery on Moto G 2nd generation without installing third party apps?

How do I save battery life on my Moto G 2nd generation phone without installing third party apps ?
0
votes
1answer
3k views

Battery goes down from 100% to like 80-75% so fast

Why does my LG L90 battery goes down from 100% to like 80-75% so fast (about 30 mins) and then the battery lasts quite a while? Is it because the battery has been charged only a few times? Because I ...
-1
votes
3answers
16 views

Is it better to take your phone to the store to have the battery replaced? [closed]

I recently upgraded to a smartphone and am learning my way around it. I like to do things myself whenever possible, so I'm wondering: When the time comes to replace the battery, should I take it in to ...
1
vote
2answers
55 views

My android system and android os are consuming more part of my battery

this problem has been troublimg me from the last few weeks I reported this problem at the Flipkart service center and they changed my battery and software.I even tried a factory reset but to no avail. ...
0
votes
0answers
30 views

Nexus 7 max battery capacity dropped so fast

I own a Nexus 7 2012 running Android 5.0.2 Two months back when I installed battery doctor and checked my maximum battery capacity it showed 3950mAh. Uninstalled the app, yesterday I re-installed the ...
0
votes
0answers
7 views

Can I leave my note 2 charging? [duplicate]

The guy I bought my phone off of said there was a problem with the note 2, where i should not leave my phone plugged in all the time becuase the battery could overheat of whatever.. So I dont have it ...
2
votes
2answers
13k views

How do I turn on battery percentage in Android Lollipop?

I haven't been able to find a menu option for this setting in Android Lollipop (previously known as Android-L).
0
votes
1answer
27 views

How to replace Nexus 5 battery?

As we all know, the battery in the Nexus 5 is sealed inside the phone chassis and cannot be replaced by the owner the way other phones' batteries can be. I am not particularly in favor of ...
1
vote
0answers
36 views

Battery down over night?

I only found a question where the cause of this problem was the exchange service. But in my case the battery went down from 80 to 9% over night, with 55% consumed by Android OS. What are the services ...
0
votes
1answer
153 views

edit : battery drain *MYSTERY*

UPDATE 06/02/2015 i have a Galaxy Grand Duos and i constantly faced battery drain issues. after MANY ideas to what the problem could be, (even by samsung service), i decided to root the phone and ...
0
votes
1answer
11 views

What would happen if the kernel was somehow modified to avoid sending the shutdown signal?

I'm assuming a signal is sent when the battery reaches some critical level. If that signal was programmed to be ignored somehow, what would me most likely to happen when the battery depleted its ...
0
votes
1answer
2k views

Having serious technical problems / crashing on my Samsung i9300

I have a Samsung Galaxy S3 (i9300) that I've been using for slightly over a year. I am a rather heavy-duty user of the phone, and have used in intensively for that time. I do take care of the phone ...
0
votes
0answers
66 views

com.avast.android.mobilesecurity still using 30% of battery power even after I uninstalled the app?

On my Samsung Galaxy s5 I found out that avast was draining my battery, so I uninstalled it. Even after rebooting, by battery usage still shows something called com.avast.android.mobilesecurity (with ...
2
votes
1answer
438 views

Where is the battery animation called?

I have a tablet from China, it's a Q8H Allwinner. It is rooted, and I've browsed the internal storage for hours to find the battery animation, I found them at framework-res.apk... Now I want to find ...
0
votes
1answer
3k views

battery draining problem in samsung galaxy note 2

I've replaced my damaged battery with a new one in my samsung galaxy note 2, but it drains too quickly. After fully charging the battery, when I leave the phone without using it (the screen is ...
0
votes
0answers
28 views

Alarm not triggered when battery low (but also when battery full)

I've noticed that on my Android 4.3 Samsung Galaxy SIII, as well as on previous devices, the alarm is not triggered when the battery is low, and any applications that depend on this will thus not be ...
1
vote
3answers
98 views

android app to shutdown below certain battery level

Does anybody know of an app or how to programmatically make my phone turn off when the battery level is below 50%? At the moment it does this when the battery level (or voltage) is critically low, ...
0
votes
1answer
45 views

SD Maid on Rooted Roger's Galaxy S3 hanging on “System Cleanup” and “Duplicate”

My phone is a rooted Canadian Samsung Galaxy S3 (SGH-I747M) running stock 4.4.2. I've had SD Maid installed for a very long time and it's worked great up until now. I've never had any issues with it. ...
14
votes
3answers
6k views

Why my phone battery has four terminal? what is the use of the fourth?

I have a LG Optimus One (P500). For sometime I am wondering why my phone's battery has four terminals. I am aware that two terminals are for the positive and negative points and the the third connects ...
6
votes
1answer
5k views

Should the phone be fully charged before flashing a rom?

In posts like this, and from other sources, I have heard that the handset should be fully charged before flashing or installing a customer ROM. I assume this is because the calibration for the ...
0
votes
1answer
123 views

Galaxy S5 Battery Drain

Galaxy S5 (unrooted) My battery drain isn't dreadful yet, but it isn't getting better. I can't narrow down what is causing it. I have tried keeping my sync turned off, keeping google location ...
0
votes
0answers
37 views

Nexus 4 red light appears when trying reboot (power button + vol)

Yesterday my phone fell out my bed, I picked it up and trying to turn on and nothing. I start charging my Nexus 4 and nothing appeared (battery signal). I pushed the power button and the screen turns ...
0
votes
1answer
26 views

Karbonn Titanium S1 suddenly switches off

My Karbonn Titanium S1 smartphone switches off when I open the gallery, play any game, listen to music or do anything with the phone without connecting the charger. The screen starts to shrink and the ...
0
votes
0answers
39 views

Configure android phone to start charge only after discharging 70% or below

I have an application where my phone needs to be in continuous charging mode. I understand most smart phones would have a mechanism that cuts off charging after the phone has been charged to 100% and ...
0
votes
1answer
100 views

LG-P990 (optimus 2x) with CyanogenMod 7 turns off suddenly and battery indicator goes straight from 100% to 0%

I installed CM7 on my LG P990 five months ago and it worked well. Yesterday, I was watching a video on YouTube and my phone turned off suddenly. It didn't want to turn on, and then my battery dropped ...
0
votes
1answer
24 views

How can an NFC battery's NFC functionality be used on Android devices? [duplicate]

My Samsung Galaxy SIII comes with a battery with an Near Field Communications (NFC) label on it. Several earlier Android modles don't come with such a label on the battery. I would like to know what ...
2
votes
1answer
39 views

How to use an external sd card and recharge the battery at the same time

I'm an happy owner of the tablet nexus 10. It is very good. Some time ago I've bought the leef connector because I want to use an external sd card : as you can see from the picture,there is a ...
0
votes
2answers
2k views

How much battery drain do push notifications cause on Android 4.1?

I've got an S3 on 4.1, and I have a lot of apps which have push notifications. This is convenient, but I want to know if 4.1 is set-up to use push notifications efficiently with regards to battery ...
8
votes
3answers
4k views

How to allow auto-update of apps in Play Store only when plugged in?

I would like apps to be updated automatically when my phone is plugged in (charging) and on wifi. I can easily allow auto-update only when wifi is on with the appropriate option in the Play Store ...
0
votes
0answers
25 views

New Here and would appreciate any advice. Battery issue with galaxy s5

so I'm new to the forum and wanted to see if anyone could help me solve a battery issue I just started having with my galaxy S5. I recently purchased a Gear 2 and downloaded gear manager and it seems ...
0
votes
0answers
32 views

Nexus 4 unresponsive and blinking red light when battery at 80%

Tonight, for the second time this week, my Nexus 4 shut down by itself and was unresponsive when I tried to power it up. I had no luck holding the power button. Then I tried plugging it in the ...
2
votes
5answers
11k views

“Mediaserver” under Power management / Battery usage (xperia ZL)

I have a Sony Xperia ZL running Android 4.2.2 . There's a background process named "Mediaserver" which uses most of my battery, while the phone is on standby. If I charge it to 100% and leave it ...
0
votes
0answers
36 views

Is maximum capacity of a battery in mAh a increasable value? - received fake battery

I think its not. I just bought an extended 3890 mAh battery for my Galaxy S4 GT I9500. The original Samsung battery is 2600 mAh. This is my second purchase from a different seller, after discovering ...
7
votes
1answer
943 views

Why do I need to remove my battery periodically to fix phone problems?

On my HTC MyTouch 4G (Android 2.3.4), twice now the diagnosis for odd failures was to take the battery out, wait a minute, and replace it. (The first failure was loss of network; the second was web ...
0
votes
1answer
17 views

can I replace my tablet battery with a phonoe one

I have a tablet with 3.7v li-ion battery which lasts few minutes on ... and an old phone with the same type and voltage battery can I replace tablet battery with this one? and how?
0
votes
1answer
496 views

How to calibrate a new Nexus 5 battery that's higher capacity than original?

Just got a KBTEL battery that's 3800 mAh compared to the original 2300 mAh nexus battery. I charged it dead overnight, and now its been running for more than 7 hours and the capacity shows below 5% ...