Battery life is important for mobile devices. Questions regarding battery life should use this tag.
99
votes
17answers
47k views
What can I do to increase battery life on my Android device?
What can I do to get better battery life on my Droid? Battery life seems awful. Less than 15 hours or so on normal usage.
139
votes
4answers
15k views
Does constant charging harm my Android cellphone?
I usually disconnect my cellphone from the charger some time after it's fully charged because I'm afraid the battery could lose capacity over time if I don't. However, I believe modern electronics ...
14
votes
3answers
9k views
How to deal with (orphaned) WakeLocks?
I guess most of you at least have heard about WakeLocks. Many of you will have experienced them already -- wether knowingly or not. Some may know how to deal with them in general -- but only few know ...
16
votes
1answer
21k views
What is *Cell standby* and how can I keep it from eating my battery?
Looking up my battery statistics, I almost always find Cell standby amongst the top consumers:
I never thought that "idle" would use so much energy. I saw that other people encounter similar ...
0
votes
0answers
556 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?
10
votes
3answers
22k 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 ...
33
votes
4answers
11k views
Do bright wallpapers spend more battery than dark ones?
I started wondering about this when I realized most websites I visit have white backgrounds, and I know that the screen is usually responsible for most of the battery usage. Since I can't change the ...
19
votes
3answers
7k views
Do I have to charge my phone before I use it the first time?
When I got my last phone, a SE k850i, I was recommended to charge it fully once before I even turned it on. Does this apply today as well, for my coming HTC Desire HD?
Why was I recommended to do so ...
12
votes
2answers
2k views
When should I start charging my Lithium battery?
The comments in this question say that I shouldn't wait until low battery charge level before I charge, because that reduces battery life (this is contrary to my understanding before that the faster ...
5
votes
3answers
3k views
How to break in a new cell phone battery?
Whats the best way to break in a new cell phone battery?
I just got a replacement battery for my Motorola Droid and so far through 2 cycles it is barely lasting a few hours.
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 ...
7
votes
4answers
1k views
Will constantly having Bluetooth on drain my battery too fast?
I'm thinking about making an app which will require Bluetooth to be available at all times. However, if this reduces battery charge life significantly, then that's kind of a show stopper. Can anyone ...
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 ...
9
votes
2answers
2k views
How frequently is it okay to let the battery discharge fully or as low as possible?
I know that atleast once or twice a month a full battery drain and then a 100% charge helps increase the battery life and also gives more accurate battery readings.
I was wondering, how frequently is ...
12
votes
6answers
1k 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 ...
15
votes
2answers
869 views
Does 'poor' reception deplete the battery quicker?
In the area where I live I sometimes have trouble with reception. The Internet stops working for me or it takes time to load pages. The phone tries and tries to connect.
It seems to me that when this ...
9
votes
4answers
653 views
Gingerbread has drastically reduced my battery life
I have a Nexus One, and since upgrading to 2.3.3, my phone lasts several hours less compared to 2.2.x. I've swapped out to a new battery, which didn't make a difference. In about 14 hours (of nothing ...
3
votes
2answers
979 views
How can I tell what is really draining my battery?
I know that by going to Settings > About Phone > Battery Use, I can get some idea of the applications that are using up the most of my battery. I see things like "Cell standby", "Phone idle", ...
4
votes
1answer
914 views
Is there anything that can show exactly what has awaken my phone?
Recently I had some issues with my phones battery getting drained in 8-10 hours, even though the screen was active for less than 1 hour and wifi/bluetooth/gps was off.
My first thought was to check ...
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
1answer
286 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?
54
votes
4answers
25k 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.", ...
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
6
votes
4answers
11k views
Is there an app that will drain my battery?
Are there any apps that will specifically help to drain a battery down quickly?
The scenario I would want to have this is if I want to quickly drain the battery so I can charge it fully again. Some ...
5
votes
1answer
449 views
Does a battery with more capacity last proportionally longer?
I recently bought a Galaxy S2 which came with a 1650mAh battery and in a near future the manufacturer will be offering another one with a 2000mAh. My question is: will it last 21% more than the ...
4
votes
3answers
2k views
How can I prevent my Desire HDs battery from draining overnight?
I've recently got the new HTC Desire HD, which has a poor battery to start with (1230 mAh), but in the last two weeks I've had several nights waking up with a dead battery.
The first few nights, I ...
12
votes
1answer
1k views
charging from power outlet or computer? to save battery lifetime
I realized that charging my HTC Desire (Android 2.1) takes longer if connected to computer compare to power outlet.
Does it matter which method I use to charge in terms of battery life time?
7
votes
2answers
497 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 ...
6
votes
2answers
4k 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 ...
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 ...
4
votes
1answer
585 views
Can anyone reccomend a 2g / 3g switching widget?
I've just got my new HTC Desire HD and I want to switch 3G on and off as required. I used to do this on my old HTC magic and got quite good battery life compared to some friends with the same phone.
...
3
votes
1answer
186 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 ...
10
votes
3answers
7k views
Mediaserver using excessive CPU time and battery
I've got a Nexus 4 on OS version 4.2.1 that suddenly started to drain it's battery very quickly. When looking in the battery usage I see "Mediaserver"eating 60% of the battery over time, with several ...
7
votes
2answers
1k views
Android: app to turn off cellphone (sim) radio
How do I turn the cellphone (sim) radio on an Android phone.
The radio consumes a lot of power (30-70%), especially when the phone is idle. Sometimes I only need to use other functions (e.g. clock, ...
6
votes
1answer
566 views
How much does Android use Wi-Fi for network discovery when not connected?
When I have Wi-Fi turned on, but not connected to any network, how much does Android use the Wi-Fi function? I'm asking this because apparently Wi-Fi activity uses considerable* amounts of battery.
...
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?
5
votes
1answer
866 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 ...
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
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?
3
votes
1answer
444 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 ...
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
699 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 ...
0
votes
1answer
774 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 ...
-1
votes
1answer
110 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 ...
-2
votes
3answers
2k views
Android ROM, RAM, Internal storage, External storage and Battery utilization [closed]
I would like to know how the Android OS manages memory for Applications. When are the various memory hardware components like ROM, RAM, Internal storage and External storage used during an ...
