Battery life is important for mobile devices. Questions regarding battery life should use this tag.
1
vote
0answers
8 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
36 views
How does the android OS estimate remaining battery time?
It is know 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
29 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
134 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
1answer
96 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 ...
1
vote
1answer
2k views
msm_otg kernel wakelock preventing deep sleep
Ever since upgrading my stock Sprint Galaxy S3 to the official Jelly Bean release, my phone won't go in deep sleep at all, it's constantly at 384MHz. It's because of msm_otg kernel wakelock. Anyone ...
3
votes
1answer
914 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 ...
3
votes
1answer
123 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 ...
2
votes
1answer
99 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 ...
1
vote
3answers
133 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 ...
2
votes
1answer
132 views
What factors does PowerTutor measure to show energy consumption?
I am trying to find the impact of the signal strength on the energy consumption of WIFI in Android using an HTC NEXUS ONE. I am sending several files starting from 1 kb to 600 kb.
I use PowerTutor as ...
7
votes
5answers
8k 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 ...
1
vote
0answers
33 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
1answer
288 views
Neo V with 4.0 ICS update — battery problem
My Sony Xperia Neo V battery performance has gone down very badly after upgrading to ICS.
It mainly happens when I have my mobile data/internet turned on. How can I improve the battery performance?
0
votes
3answers
3k 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?
1
vote
2answers
10k 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 ...
1
vote
1answer
198 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 ...
12
votes
3answers
3k views
How can I avoid the battery charging when connected via USB?
I'm using my Samsung Galaxy S2 for development so I regularly plug it while it's not fully charged, and my phone starts charging over USB. I think this (charging while in use) can affect battery life ...
-1
votes
1answer
347 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 ...
53
votes
4answers
20k views
Battery Life and First Time Charging on Li-ion Batteries. Myth?
"Ok you bought a brand new mobile phone with brand new battery, after checking its working ok kindly switch it off and charge it fully (100%) then start using it. IT WILL INCREASE YOUR BATTERY LIFE.", ...
5
votes
1answer
274 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?
2
votes
2answers
240 views
How can I prevent the battery in my Nexus S from draining overnight?
I have a Google Nexus S and for the past 2-3 days whenever I go to sleep the battery drains completely overnight. I mean when I go to bed the charge on my phone is plus 90% but for the past 2 days ...
6
votes
2answers
3k views
Google Services is killing my battery by keeping phone awake
In the last few days my Galaxy S3 has gone from lasting 12-13 hours to about 6 hours. On checking the battery monitor it seems to suggest that the phone is constantly staying awake and that Google ...
3
votes
1answer
468 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 ...
15
votes
3answers
3k views
What is USB debugging? Can I keep it ON forever?
Sometimes I need to transfer some music from my PC to my Galaxy S2 and must always activate USB debugging. Then I think, can I keep it ON forever? I mean, Keep it ON for ever can give me a problem ...
2
votes
1answer
179 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 ...
2
votes
1answer
328 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
1answer
392 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 ...
9
votes
7answers
3k views
What effect does tasker/locale have on battery life?
Locale and tasker look pretty cool. How much effect will they have on battery life?
5
votes
3answers
456 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
0answers
554 views
Battery conservation? [duplicate]
Possible Duplicate:
What can I do to increase battery life on my Android phone?
What are some general ways to improve the battery life of my phone?
0
votes
1answer
192 views
App to show battery current or rate of change of voltage, short term info
Id like to have quick feedback about how what I do on my phone affects power usage, but cant seem to find a good widget or app for that out of the hundreds out there! Anyone know any?
Thanks
1
vote
0answers
1k 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 ...
2
votes
1answer
222 views
Can rooting be the cause of battery drainage?
Its been three weeks I have rooted my phone. I have installed a lot of apps using link2sd on external sd card. I have noticed that since the rooting, the battery goes down very fast. 80% of charge ...
3
votes
2answers
298 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 ...
12
votes
6answers
972 views
How can I improve the battery life on my device? [duplicate]
Possible Duplicate:
What can I do to increase battery life on my Android device?
My Desire is absolutely great, but with my usage the battery life is really a big problem.
I have a few ...
4
votes
5answers
784 views
power consumption by application?
Since cellphone application software requires extra power for processing. Is there any application software that indicate power consumption by particular application?
8
votes
2answers
837 views
Power draw from GPS - Does granularity affect amount of power drawn?
We all know that GPS draws a considerable amount of battery power. Does anyone know of any studies that test the "granularity" of a GPS signal with how much battery is consumed?
I'm not talking ...
2
votes
1answer
368 views
Locale powersave plugin & Power Control widget
I use Locale app with powersave plugin. 3G is usually switched off except during scheduled syncing to save power.
There are occassional situations when I would like to use 3G and I would like switch ...
21
votes
10answers
12k views
How does power usage for data over WiFi compare to data over 3G? (Ignore LTE for now)
If you have unlimited data over 3G so that cost is no option, which is more power efficient?
Using the WiFi or 3G connection for data usage?
Extending battery life being the goal
0
votes
1answer
132 views
Can any Android device be set to not auto power-off?
If I buy any no-name Android tablet from ebay etc, is there a chance it will not allow me to force it to stay on all the time? In other words, is "never auto sleep" a universal feature of any android ...
5
votes
1answer
757 views
Should I disable mobile data while I'm connected to WiFi?
If WiFi is activated, the phone expends energy trying to find WiFi connections, even if I'm not using the internet. Is the same true for mobile data? Does the phone expend any energy trying to keep a ...
0
votes
1answer
159 views
Prevent runaway threads and ultimately physical overheating and battery drain on Android
I was wondering if there is a system monitor app that will raise (audible) alerts and offer app closure if it detects runaway threads on Android that cause physical overheating and battery drain.
...
1
vote
1answer
93 views
Power management on Android — is app CPU correlated to power usage?
2 questions:
Is application CPU usage on Android correlated and how highly to battery usage? In other words, are apps that suck a lot of CPU also draining the battery or not necessarily?
Is there a ...
2
votes
0answers
120 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 ...
8
votes
2answers
571 views
Easiest way to reduce power consumption to phone only
Sometimes I'm in a situation where I can't charge and want to have phone service as long as possible. I won't care if nothing else is enabled.
What's the easiest way eliminate as much other power ...
2
votes
1answer
1k views
Turn off Wi-Fi Power Saving?
Is there a way to turn off wi-fi power saving mode on Android, i.e. have the wi-fi radio stay on at all times? I'd rather have a stable, low-latency wi-fi connection and slightly less battery life ...
2
votes
2answers
324 views
How can I return from power-saving mode in Android 2.3?
I'm using a Samsung Galaxy S II Epic (with Android version 2.3.6 installed), and whenever my phone reaches 10% battery life it prompts me to turn on power-saving mode (and I do).
However, once my ...
3
votes
2answers
443 views
How To Prevent Uploading From Interrupting When Screen Is Off?
When screen goes off, uploads get interrupted especially YouTube uploads and everytime i have to resume phone to continue uploads. The problem is that in case of YouTube, videos stutter which i assume ...
0
votes
2answers
4k views
The battery of my Galaxy S 2 is draining very quickly…including on plane mode
I just got a Galaxy S II which I upgraded to ICS.
I really struggle with the battery life.
I have been looking around a lot on the forums explaining how to save my precious battery.
I have done ...
