Battery life is important for mobile devices. Questions regarding battery life should use this tag.
3
votes
1answer
2k 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
293 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 ...
3
votes
1answer
177 views
Is my battery faulty
I've had my HTC Desire (latest legit firmware) for 18 months or so, and I believe this problem has existed for a while but it getting worse. It might just be time for a new battery but in case ...
3
votes
1answer
425 views
Is there any known memory leak in Gingerbread 2.3.3 fixed by occasional reboot? Related to battery usage?
I notice that when I reboot my Samsung Captivate, it runs smoothly for about 2 or 3 days. After that, I notice that there is a lot more lag with various apps, and the launcher screen is more likely ...
3
votes
4answers
863 views
Battery usage problem in Android 2.3.6
Since the update to Gingerbread the battery of my phone has the half duration than with the 2.3.4 version.
The "Battery Usage" in settings don't show anything abnormal.
Anybody have the same ...
3
votes
1answer
379 views
HTC Evo - Can Wi-Fi Radio Sleep?
I've noticed that when actively downloading a lot of data, the Wi-Fi radio uses much less power than the 3G radio. However, when the phone is not being used much, the 3G radio will sleep but the ...
3
votes
3answers
559 views
Ways to improve battery life on Droid Incredible?
Out of the box, I noticed my Incredible has a lot of stuff running/turned on by default. Besides the basics of turning off WiFi, GPS, and BlueTooth when I'm not using them, are there more steps I can ...
3
votes
1answer
834 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 ...
3
votes
1answer
465 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 ...
3
votes
0answers
541 views
MS Exchange with Default Email App is Randomly Draining Battery!
I'm using my Exchange email account for work with the default Email app on my Nexus S running Jellybean... usually everything works just fine, but within a week or so it'll start consuming massive ...
3
votes
0answers
462 views
Battery life in Samsung Galaxy 3
I recently updated my Samsung Galaxy 3 to Android 2.2 . After the update my fully charged battery dies in just 3 hours(without any use) and around 1 hour if I use it (talking,browsing etc). I am using ...
2
votes
1answer
2k views
Power Saving Option in Samsung Galaxy S3
I see there is a Power Saving switch in the Galaxy S3.
What makes the Galaxy S3 save power when it is turned on?
Is there a difference this and using JuiceDefender?
Can using JuiceDefender and ...
2
votes
1answer
302 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 ...
2
votes
1answer
213 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 ...
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
447 views
Battery Statistics Viewer crashes every time
I have a DroidX with Android 2.2
I went into the Battery Usage settings
Settings > Battery Manager
See a fual cell looking battery image that says Touch for usage statistics, so I was like awesome ...
2
votes
2answers
2k views
Which uses more power/drains more battery: HTC Evo 3G or 4G?
I've read mixed reports online about which radio uses more power -- 3G or 4G. Has anyone done any semi-scientific tests that would answer this question?
When constantly downloading data over the ...
2
votes
2answers
86 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 ...
2
votes
1answer
7k views
How can I boot my Nexus S with a broken power button? Can only boot to “Do not turn off target”
My Nexus S power button has stopped working and Samsung will not honor the warranty. The farthest I've gotten is to the Downloading screen with the yellow work ahead sign, that says "Do not turn off ...
2
votes
1answer
264 views
Is there a reason Google Reader drains this much battery?
It doesn't strike me as normal that Google Reader should drain more battery than even my screen. Is this a known bug, or is it a settings issue? I'm using 4.1.1
2
votes
1answer
904 views
What does “awake” mean?
I obsessively check the battery info on my ICS phone, and I've noticed that I get the best battery life when the phone hasn't been "awake" much. But I realized I don't really know what "awake" means. ...
2
votes
1answer
671 views
Battery Sony Ericsson XPeria Mini Pro
I've a Sony Ericsson XPeria Mini Pro with Android 2.3.3. I noted that the battery ends really fast.
I don't have enable GPS service, Mobile data, Bluetooth. Only phone and wifi. In less than two days ...
2
votes
1answer
389 views
How do I set Wi-Fi sleep policy to Never on Froyo 2.2 Droid X without Advanced Wi-Fi Settings menu?
I've encountered the following instructions on a forum about battery drain
Set Wi-Fi sleep to Never in the Settings > Wireless & Networks > Wi-Fi Settings > Advanced >Wi-Fi Sleep ...
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 ...
2
votes
1answer
82 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 ...
2
votes
1answer
349 views
How to stop display turn on and consuming battery power, when using Headphones remote control or volume button?
I don't know if this depends on the music player (I'm using mort player music) or standby screen (I have widgetlocker app as lockscreen), I don't see any options in these apps to change this. In ...
2
votes
3answers
3k views
Samsung Galaxy S2 on Sprint sudden Drop in Battery Life
Since I got this device in mid November to now, I have had great battery life usually lasting almost two full days and never having a problem for one day unless I'd been using it excessively. Suddenly ...
2
votes
2answers
381 views
Does CM7.1 give a “low battery” alert?
I've been using CyanogenMod 7.1 since it became stable, and one feature I miss is the Low Battery alert. I've often come home from work, thrown my phone on the desk and forgotten to plug it in. When I ...
2
votes
2answers
3k views
Can I permanently disable the cell/radio of my phone?
My wife got a new phone with a new service, so I get to have her old phone to play around with.
Since the old phone no longer has cell phone service, I want to completely disable the cell phone or ...
2
votes
1answer
2k views
How can I increase my Samsung Galaxy Tablet 10.1 battery life?
How can I increase my Samsung Galaxy Tablet 10.1 (Android) battery life?
I am going to use my Samsung Galaxy Tablet 10.1 (with WIFI and/or 3G) for marketing purposes:
It's going to play a movie non ...
2
votes
2answers
182 views
Power saver turns display brighter. Shouldn't it be darker?
When my battery is running low, the power saver turns on. When that happens, my display gets brighter. Shouldn't it be turning darker to reduce the power consumption? Is it normal to get brighter or ...
2
votes
1answer
358 views
How to train the battery
I am trying to find the way to use my battery in the most efficient manner.
I found several suggestions how to achieve the longest life of the battery, and one of these suggestions is quite strange ...
2
votes
2answers
323 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 ...
2
votes
1answer
147 views
How can I ensure that I'm logged out of Google Latitude?
When in Google Maps, when I go into the menu, I see "Join Latitude" option next to Latitude icon.
When I am on Google Latitude web site, it tells me "Location sharing is not turned on"
Does that ...
2
votes
3answers
192 views
Settings -> About phone -> Battery use bug?
When I open the "Battery use" screen it says that the phone is on battery for 14663d 4h 34m 53s, which is clearly wrong. The graph shows a linearly descending line. What is the problem? Why does the ...
2
votes
1answer
568 views
What is preventing my Android phone from going to sleep? It is eating through the battery quickly
My phone is the Motorola Droid 1, rooted and modded with CyanogenMod 7. This problem did not occur before I modded it. When I check the battery stats, the awake bar is always solid, so something is ...
2
votes
1answer
702 views
Why does my EVO Android phone screen keep turning on?
I have an HTC EVO and I can be sitting around doing nothing, when all of a sudden the screen comes on and stays on. I try to turn it off, but it keeps turning back on - sometimes after a second, ...
2
votes
1answer
173 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
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 ...
2
votes
0answers
218 views
How to properly charge a Lithium Polymer battery
My battery is Lithium Polymer. I want to ask the following:
Is a Li-Po battery essentially the same as a Li-Ion battery?
Can I use my phone while it's charging?
I've read that you have to calibrate ...
2
votes
0answers
132 views
Prevent complete charging?
I'm looking for a way to prevent my phone from completely charging every time it is connected to my computer. I want to reduce the battery's capacity loss, as it is non-replaceable, and it seems to me ...
2
votes
1answer
612 views
Why does my myTouch 4G lose battery so fast?
So I formatted my phone today. I have not used it, and it was at 100% this morning. No apps installed, the screen was only on for about 10 minutes. Yet when I go to check it now, about 12 hours later, ...
2
votes
1answer
131 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 ...
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 ...
1
vote
1answer
198 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 ...
1
vote
1answer
291 views
Number of Wi-Fi channels to be used?
Under advanced wifi settings one can change number of Wi-Fi channels to be used (11, 13, 14). Does anyone have a clue on how does this property affect battery drain? I know it should be configured ...
1
vote
1answer
325 views
Battery life in dual-boot HTC HD2
I own a dual-booting HTC-HD2 with MIUI on SD card.
I already knew, from tutorials, that in order to maximize battery life I should first-boot Android only with 100% of charge.
This is currently ...
1
vote
3answers
297 views
How to keep my battery life? [duplicate]
Possible Duplicate:
What can I do to increase battery life on my Android phone?
Today I woke up after a night without charging my phone (galaxy s2). and he's dead, last night he was almost ...
1
vote
1answer
2k 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 ...
