Battery life is important for mobile devices. Questions regarding battery life should use this tag.
1
vote
1answer
34 views
Why does Better Battery Stats say my Galaxy S4 is awake 100% of the time?
I think the screenshots speak for themselves. Can't pinpoint a reason from what I see. Anyone can help please? Thanks
Screenshots (click images for larger variants)
1
vote
2answers
36 views
Full battery completely depleted within a few hours without any user activity — what to do?
I left my phone on the table with full battery without doing anything with it. After a few hours the battery was completely depleted, and the phone automatically shut down.
What could cause such a ...
2
votes
0answers
18 views
Is it safe to keep Android charging through USB all day? [duplicate]
When I'm in front of the computer, I always keep my Android phone plugged into a USB cable so it's always at a 100% charge and I can type text messages from the convenience of my PC keyboard.
Still, ...
0
votes
3answers
54 views
Sony Ericsson DISCHARGES when plugged in
I have a Sony Ericsson Live With Walkman (WT19i). About a week ago my phone started discharging when plugged in for charging using either a Samsung wall charger or the USB port on my PC. It charged ...
3
votes
1answer
84 views
What can cause sudden drop of my battery in Nexus 4?
I have new Nexus 4 phone and I found it dead several times after the night. Obviously it wasn't used during night, screen was turned off.
After I plugged it to the charger I had to wait a few minutes ...
0
votes
1answer
27 views
How to stop all but 1 one app including their services?
My HTC Sensation's battery does not last long.
I'm going for a Marathon race which should last at least 5 hours and I'm going to use 1 app (RunKeeper) for that period.
I would like to preserve as ...
0
votes
0answers
8 views
Does Micromax Ninja A89 has overcharging problems? [duplicate]
I have a new Micromax Ninja A89 mobile phone which has the very low battery capacity - just around 1 day or a little less. I like to go to sleep with my mobile charging. I wake up a few hours after ...
1
vote
0answers
170 views
Galaxy S3 Mini drains excessive battery when Wifi is ON
This question is linked to this one: Wifi battery saving tips or automation
This time, the question is different.
I have here a Galaxy S3 Mini phone that behaves strange. When Wifi is OFF, battery ...
3
votes
1answer
187 views
How does the android OS estimate remaining battery time?
Is it known how the Android OS estimates time to failure / remaining battery charge?
I am doing a school project about battery estimation on mobile devices but have not been able to find any ...
0
votes
2answers
61 views
Wifi battery saving tips or automation
A person that is not expert in computers & technology (including smartphones) bought a Galaxy Mini S3 and asked me some help. He is very old of age.
The problem with this phone is that Wifi ...
1
vote
1answer
86 views
What does power saving do exactly?
What changes happen in functioning of the phone after you turn it on?
My device: Samsung S3 Mini
1
vote
3answers
1k views
Does Cyanogenmod reduce battery life?
My galaxy mini was running GB 2.3.6. I recently rooted my phone and installed CM 7.2. Now it looks like my battery is getting drained a little quicker than before. From what I have heard CM increases ...
4
votes
1answer
230 views
Samsung galaxy 3 says charging paused. Battery temperature too low
I plugged in my S3 when it said 1% battery life and the red charging indicator light never came on, when i checked it a few minutes later it was at 0% and powered off. Immediately after that I tried ...
2
votes
2answers
444 views
Display screen keeps waking up when locked
When I lock my Samsung Galaxy Nexus by pushing the power button, my phone's screen darkens for a few seconds, then keeps staying awake with the lock screen displayed. This keeps eating away at my ...
5
votes
2answers
1k views
2G versus 3G: Does it really save battery?
I often hear the recommendation that fixing your device to 2G saves a lot of juice compared to using 3G.
Is that true? Or is it really a myth?
-1
votes
1answer
1k views
Unusual battery drain on note II [closed]
My Note 2 battery is driving me insane.
I have been using my Note 2 for like 2 months. And I had been following the recharging cycle where you only charge the battery when it reaches 5% or less and ...
2
votes
1answer
808 views
Should I keep my Android tablets' power off or leave them on standby mode?
Should I keep my Android tablets power off or leave them on standby mode? Which option is better?
I have two tablets: Allwinner A10 single core 10 inch (old one) and Allwinner A31 quad core 9.7 inch ...
7
votes
2answers
516 views
What uses most power: GPS or WiFi?
When playing Ingress I find that both GPS and WiFi (each by themselves) provide an acceptable location accuracy. My question is what draws the most power?
I'm interested in technical information ...
2
votes
1answer
217 views
Why is my battery low only a few hours after charging?
Twice recently I have charged my Samsung Galaxy Ace at night and when the phone indicates it's fully charged I unplug the charger only to be woken a couple of hours later thinking I have a text come ...
4
votes
3answers
2k views
Nexus 7 charges very slowly, even with 2 amp chargers
I'm facing a rather painful issue with the battery life/charging issue with my Nexus 7 (4.2.2)
When idle and plugged into my 2A charger with the stock USB cable, it charges VERY slowly. I'd say ...
1
vote
0answers
2k views
Custom ROM to improve Galaxy I9000 battery life (if mostly standy)? [closed]
I have a Galaxy S I9000 (2.3.6, Gingerbread.XXJW4) and use my phone minimally (mostly just on standby). I would like a least a couple of days, and hopefully a week or two between recharges if possible ...
5
votes
3answers
654 views
What kind of power saving smarts does Android already have?
I just d/l tasker and it's been really interesting (although not as interesting as I would've liked since I feel a lot of the good features require a root).
I would like to optimize my Galaxy s3 so ...
0
votes
1answer
112 views
WiFi tether without losing battery
So, as everyone already knows, when tethering data over WiFi your battery may overheat/lose battery/etc. What I want to do is while in my car:
Stream internet over WiFi to >1 person
Navigate with ...
1
vote
1answer
260 views
Battery usage for keeping apps open
How much of an effect does it have on the phones battery life to keep applications such as the contacts application open. I ask because that app sometimes takes long to open the first time depending ...
0
votes
2answers
2k views
GPS Battery Drain — LocationManagerService
EDIT 3: Someone pointed me in the right direction on another forum. There was a bug with HD Widgets that rolled out yesterday. HD Widgets Bug
As of yesterday I am getting a 35%/hour battery drain. ...
0
votes
3answers
4k views
Battery drain on Galaxy Note-I after updating to Jelly Bean
I have Galaxy Note-I (N7000), and upgraded to Jelly Bean 4.1 today.
The battery drains fast. Do we expect any update from Samsung on the battery drain issue, or do I need to downgrade to ICS?
7
votes
2answers
533 views
Do battery saver apps really work? Is it possible to save battery programmatically?
There are numerous apps in the Google Play store claiming to double or triple the battery life. Is it just a myth? Or can they really?
If they really do save some power, why doesn't Android do it by ...
1
vote
0answers
89 views
Wi-fi disabled during lock still partly active? Or do I mis-interpret the battery graph?
On my Google Nexus 7 I noticed that it would consume around 1% of battery each hour that it was just being idle. I suspected that battery-usage during idle time could be improved. So the next night (7 ...
3
votes
1answer
125 views
“Phone” item using 10-15% of Battery Life
I've attempted to search for other questions answering this, but keyword ambiguity is working against me.
On my Galaxy Nexus, my battery drains rather quickly. Very frequently, when viewing the ...
3
votes
1answer
524 views
my samsung galaxy 2 battery is draining to fast!
I have an Samsung Galaxy S2 GT i9100. I have had it for quite a time, but today I noticed something strange:
First my battery had not been charging while I was sleeping: when I woke up I had only ...
1
vote
1answer
167 views
Battery getting charged with ultra speed and continuous at 1%charge for more than 9 hrs
My neo v battery getting charged with in ten min from 0 to 100 percentage( Exponential growth graph ) with ultra speed and getting discharged to 1%( it also give alert showing last 1% left, keep ...
4
votes
3answers
148 views
When did my phone power off due to low battery? Is the information recorded somewhere?
I'd like to know when my Android phone powered down due to low battery. Is there a log or way to see this? I am running a new program that makes use of BlueTooth and I suspect that's the problem. I ...
1
vote
1answer
219 views
Enterprise (802.1x) WiFi causing excessive battery drain?
In the past week, realised that WiFi at work (using 802.1x auth) has been draining my battery like crazy.
Here are some stats I took over the past few days:
Case Connection Duration ...
1
vote
1answer
264 views
How to prevent Nexus 7 of charging the battery every time when connected to a USB?
Hello fellow Android enthusasts,
I recently bought a Nexus7 that I want to use for development. The thing is, every time I connect it to my USB, in order to test some apps on it, it starts charging. ...
1
vote
0answers
80 views
Optimizing battery life via colour schemes
I have been looking for a way to change everything on my phone to black (and pure green), since the screen is the main power consumer.
"the Green OLEDs provide 10 times more Brightness per watt ...
7
votes
5answers
14k views
Serious battery drain (Screen, Android OS) after JB upgrade
Since I upgraded my Samsung Galaxy SII from Android 4.0.4 (ICS) to 4.1.2 (JB), my battery life has decreased dramtically.
Running ICS I could easily have ~25% battery left when going to bed, after ...
0
votes
2answers
161 views
Battery life indicator has failed
A week or two ago my battery life indicator for my Motorolla Atrix 4G has ceased to working properly. The indicator indicates the battery drains ridiculous fast and it's inaccurate. I'll fully ...
0
votes
2answers
341 views
what could cause a sudden drop in battery life?
According to my battery graph the phone went from 85% to 0 in an instant. I wanted to add a screenshot, but I do not have enough reputation. The last time I checked it was nearly full, and 7 hours ...
0
votes
4answers
692 views
is there a way to automatically turn off wifi?
I have an LG P990, and I recently upgraded it to ICS. Since that charging is much slower, and energy consumption much faster. I could live with it, I charged it at work and at home too.
Yesterday ...
1
vote
2answers
12k views
Why is “Samsung Push Service” using so much of my battery?
Looking at the battery usage summary on my Galaxy Ace Plus (GT-S7500), I found that "Samsung Push Service" (v1.0.4) has used 29% of my battery. I'm having problems with the battery not lasting very ...
3
votes
1answer
3k views
Is there an efficient way to calibrate the battery than using some apps?
Is there an efficient way to calibrate the battery of my tablet in order to prove or disprove the very low battery backup than using some Apps.?
The context is that my tablet is giving a very low ...
3
votes
2answers
416 views
Setting the lock screen timeout
On my Nexus 4, when I press the power button to access the lock screen (say, to check the time), the screen doesn't turn itself off for 30 seconds. This seems like an excessive delay. On my previous ...
2
votes
0answers
128 views
How to keep CPU off when charging?
When I connect the USB power source, it makes CPU to stay on (even though "Development->Stay awake" is off).
When charging from a weak power source if makes battery to drain even faster than is case ...
2
votes
2answers
94 views
Getting a list of applications with SMS permission
I installed many applications, and some of them have specific permissions. How do I get a list of all applications with a specific permission? I'm interested in SMS permissions. I do not want to write ...
1
vote
2answers
939 views
“Restrict Background data” with Jelly Bean on tf300t ASUS tablet
On my tf300t ASUS tablet (with wifi only) I tried to set "Restrict Background Data" following
Settings->Data Usage->three boxes in the upper right corner,
but there is no such option. I read on ...
1
vote
1answer
3k views
Google Services battery usage
I recently updated to the 10.1 M snapshot of CyanogenMod for my Sprint Galaxy S3 (d2spr). Ever since I did the update, I have been seeing crazy high battery usage from Google Services. I have tried ...
3
votes
2answers
160 views
Service that syncs pictures only when charging
I've been using Dropbox camera upload to automatically sync my pictures to my PC using my data plan (this part is important, I can't use a wifi).
However, this autosync eats up the battery like ...
0
votes
1answer
3k views
Why are Dialer, Cell standby, and Phone idle killing my battery?
HTC G2 with Cyanogenmod 7.2.0, T-Mobile. It used to last all day, I'd always plug the phone in before bed and it would rarely run out of energy before then. Lately it runs out mid-day.
Today I ...
0
votes
0answers
1k views
Samsung Galaxy S2 battery gets hot
My Galaxy S2 is less than a year old. The battery sucks! I have to charge it more than once a day.
Tonight, while on the charger, the battery life is actually going down. It's also way too hot to ...
4
votes
3answers
298 views
How do I determine which process woke up the screen?
The screen woke up at 4am or 5am at night, and had been on ever since.
How can I find out the process that was responsible for screen-wake ups?
The device is Galaxy S III running Android Jellybean ...
