Battery life is important for mobile devices. Questions regarding battery life should use this tag.
3
votes
1answer
2k views
Get rid of 'battery-low' popup after some delay?
I'm using an Android phone (a Motorola Defy+ running CM9) with OsmAnd as a map solution mounted on my motorcycle (it just shows the map and a gpx-track as a driving hint).
It's not connected to a ...
0
votes
1answer
470 views
Can I prevent ICS browser from using CPU while in the background (without back-button exiting)?
I'm running ICS 4.0.3, and I notice if I have the Web app (default browser) open, but not in the foreground, it still uses a lot of CPU (25-50%), based upon the built-in Android Task Manager. Other ...
4
votes
1answer
3k views
Battery life cut in half recently - DrReadUsbStatus issue?
My regular uptime on Samsung Galaxy S2 was around 6 days. For the last couple of weeks it is down to less than 3 days. The change was instant, but I was hoping it would come back - it did not. Running ...
3
votes
1answer
270 views
Minimized Apps: Do they consume more battery?
If I keep one or more app minimized in my Android Phone (Samsung Galaxy Y) will my mobile's battery will be consumed faster than if I had not minimized any application at all?
2
votes
1answer
265 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
626 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, ...
1
vote
2answers
275 views
Power being eaten by screen usage
This morning, when I woke up my phone was out of battery power. So when I checked the battery usage I see the message Display had been used 90%.
This kind of situation had never happened to me ...
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 ...
-1
votes
1answer
105 views
Is there any equivalent of Tegra 3's “-1” low-power core in Qualicomm's S4?
One of the reasons I greatly desired my next phone to be a Tegra 3 "4+1 cores" device was the (somewhat less advertized) 5th low-power core designed to prolong battery life by running low-power ...
3
votes
1answer
84 views
Why are individual apps not listed in my battery usage statistics?
I'm using an Asus Transformer TF300 running Ice Cream Sandwich. When I check Settings->Battery the only things listed are Screen, Tablet Idle and Wifi. Why aren't apps that I use being shown in ...
1
vote
1answer
119 views
Why does my android phone gain battery when I turn it off and on again?
When I got my new android phone (ZTE N762), I noticed something. If my phone is about halfway on battery, and I turn it off for a few hours, it will gain battery life when I turn it back on, around ...
6
votes
2answers
4k views
Does disabling 3G while having WiFi save battery?
If I have WiFi enabled and 3G data disabled, does it save any battery relative to having both WiFi and 3G enabled? With WiFi enabled, I didn't know if 3G enabled would make any difference since it ...
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
3
votes
2answers
3k views
Galaxy S3 cell standby is eating my battery
My battery on my new S3 seems to be being eaten up by the cell standby using more than 50%.
I appear to get a decent signal on the phone. Does anyone have any idea why this figure would be so high?
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
183 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
920 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. ...
7
votes
2answers
451 views
Is there any study on how which services/sensors consume the battery?
I am looking for some study/comparison on how battery-consuming are specific services/sensors (3G, Wifi, GPS, Bluetooth, accelerometer) in Android devices. I know that the exact answer might differ ...
5
votes
2answers
7k views
Will rooting my phone improve its battery life?
I've had an HTC Desire HD with HTC Sense for about a year and I'm quite happy, except for the battery life. After upgrading to the latest version, it lasts about 24 hours with moderate/low usage.
I ...
2
votes
1answer
359 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 ...
6
votes
2answers
343 views
What determines power management policies in Android?
I am just approaching to the Smart Phone and Android world and have a couple of doubts:
Which modules (and SW or FW?) decide the policies with which power is
given to any component of the Smart ...
1
vote
1answer
77 views
How can battery usage of Android be at 79%?
Till last night everything was kinda balanced.....most of the different parts of the usage were in between 20-35 %, but this morning after having activated the internet from my network provider, it ...
3
votes
1answer
70 views
Can anyone explain to me what the % really refers to in the Android system, battery usage?
I am wondering what the different percentages really refer to in the battery usage section. I mean...in total I see more than a 100%. So it is easy to presume that it doest mean a certain percent out ...
1
vote
1answer
98 views
Latest Motorola update burns more battery on RAZR phone idle?
I had my Droid Razr tuned pretty well to give me 10-12 hours of use without going below 70-80% of battery life. Since the update to 6.12.181.XT912Verizon.en.US (GB 2.3.6), I'm now down to 40% in the ...
4
votes
1answer
348 views
Is there any reason not lock the CPU frequency to the minimum while the screen is off?
To save battery, I have created a "screen off" profile with SetCPU that locks the CPU frequency to the minimum while the screen is turned off. Could this have any negative side effects on apps that ...
13
votes
4answers
6k views
What's causing battery drainage by “Google Services” while packet data is switched on in a 3G dead zone?
Here's a picture of my Samsung Galaxy S2 battery usage page. Around the point where the battery usage started diving, I had added a calendar remainder, sent an email (to a new contact) and browsed ...
7
votes
2answers
936 views
Am I overcharging my phone? [duplicate]
Possible Duplicate:
Does constant charging harm my Android cellphone?
I am using my Xperia Active for application development. Given that scenario, I obviously have the phone connected to ...
5
votes
2answers
603 views
When the GPS is enabled but not in use, does it drain battery?
If the GPS is enabled (in the notification view at the top, the GPS icon is enabled), but the app doesn't use it, does it drain battery? I understand that GPS drains battery because it requires a ...
1
vote
1answer
227 views
How much does an LCD's backlight drain the battery?
The screen tends to be one of the biggest consumers of electricity. How much of this is for the backlight vs the actual screen, particularly in the case of an LCD?
2
votes
1answer
350 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 ...
5
votes
1answer
130 views
How to check how much battery the data network is using?
How do I check how much battery the data network is using? When I enter Settings->About phone->Battery usage I get the following:
Voice calls
Android OS
Display
Android System
Dialer
Cell ...
6
votes
2answers
298 views
Battery life depends on type of charger
When I charge my HTC Sensation mobile with the charger supplied by HTC the battery duration is more or less 1 day (depending of the usage). But (here comes my question) when I charge the mobile ...
12
votes
3answers
3k views
Battery - do they last longer if recharged when empty?
I'm about to buy a Samsung Galaxy Ace (it's not much expensive and I think it's a pretty good phone), however everyone has been complaining with the battery life but admitting that isn't bad compared ...
5
votes
1answer
431 views
Save battery by switching to 2G after a few minutes of inactivity
I'm looking for an app that'll switch to 2G only after a few minutes of inactivity. The idea seems simple enough, but I can't find it.
JuiceDefender just disables the data connection, and re-enables ...
2
votes
1answer
673 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 ...
4
votes
2answers
160 views
Suspend a phone
I was wondering if I could suspend my phone.
Let's say I'm running out of battery and I'm also expecting an important call in a few hours time. Instead of shutting down the phone and starting up ...
8
votes
3answers
5k views
What's the meaning of signal strength colors in battery usage screens?
The battery usage screen has an indicator for "Signal strength" that, instead of being blue/black like WiFi, has many colors: green, gray, yellow. What's their meaning?
0
votes
1answer
698 views
Xperia X10i slow
Did anyone experience the x10i to become very slow in any given day? After restarting work for few hours fine and then suddenly become.
Battery drainage is also very quick almost 4hours of some ...
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 ...
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 ...
2
votes
1answer
148 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
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 ...
3
votes
1answer
179 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 ...
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
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 ...
0
votes
1answer
726 views
How is Anker battery for Android phones?
I've heard people talking about Anker on big forums about Anker battery, basically cell phone batteries and external batteries, and it seems people speak highly about it. So have you have any idea ...
9
votes
3answers
21k views
How can I find out what causes “Android OS” to consume battery?
The issue is that I see a high percentage on the "Android OS" item in the Battery Usage, and I want to find out what is causing it. But let me say that I'm interested in diagnostics techniques and ...
4
votes
1answer
231 views
Battery level on Asus eee pad Transformer with dock
I'm wondering if anybody knows how the battery level is measured on the Transformer when the dock is connected.
I fully charged the other day, and after few hours of use the battery level was still ...
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 ...
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 ...
