Questions about Battery life (how long each charge last) or/and Battery Durability (how long until it needs to be replaced) should use this tag.

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7
votes
3answers
2k views

Why has my GSIII's battery life dropped from 50-60 hours to 16 hours?

I have a GSIII (Sprint) running Android 4.0.4. In the last three days, I have not made any changes or installed any new software that I know of, but my battery life has dropped such that my phone, ...
7
votes
2answers
3k 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 ...
7
votes
2answers
595 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 ...
7
votes
1answer
651 views

Is it normal for Android System to be the top battery user?

Over the past couple of days, the battery usage of my new phone has been as follows: 34% - Android System 28% - Cell Standby 21% - Phone idle 10% - Display 03% - Google Goggles 02% - ...
7
votes
1answer
216 views

Battery Stats Are Vastly Incorrect

After updating to 6.0.1 (MMB29K) from 6.0.0 (MRA58R) I have come to face a very odd and never seen before issue. My battery stats are wildly wrong. My stats show 4k% or higher and no battery stat ...
7
votes
3answers
533 views

How can I tell why my sleeping phone occasionally gets warm (and battery is draining abnormally)?

My two Android phones are doing the same thing, Motorola Milestone and Samsung GS3. From time to time, it is sleeping in my pocket and it will start to get warm and the battery is then draining quite ...
7
votes
2answers
2k views

Can I leave it plugged in for charge all the time? -Samsung Galaxy 3 I5801

In short my question is - What is the battery level at which it starts charging again Samsung Galaxy 3 I5801 device when kept plugged in for charge all the time? If you want to know background and ...
7
votes
3answers
8k 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 ...
6
votes
2answers
2k views

Can Android app repair battery's bad cell?

I know this was covered in a different post, but I've been wondering how this app can actually make a difference in battery life. I've tried many of these, and "Repair Battery Life" is the only one ...
6
votes
2answers
2k 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 ...
6
votes
3answers
3k 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 ...
6
votes
5answers
43k 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 ...
6
votes
2answers
2k views

Does encrypting the Xoom tablet use battery faster?

I recently decided to encrypt my Xoom tablet. The process went smoothly (full power, plugged in the whole time, took about an hour) but since the encryption, it seems like my battery life has ...
6
votes
1answer
868 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. ...
6
votes
2answers
742 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 ...
6
votes
1answer
1k 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 ...
6
votes
1answer
229 views

What happened to my detailed battery stats on my Asus Transformer Pad?

I have an Asus Transformer Pad tablet (TF300T). As with any other Android device I've owned, when I go to the settings menu and tap "battery", it gives me a detailed break down of which apps and ...
6
votes
2answers
382 views

Droid 2 Global - Will switching from Global to CDMA-only improve battery life?

I recently got a DROID 2 Global with Verizon and am looking to maximize my battery life. I am aware of the need to dim my display, disable Wi-Fi and GPS when not using it, increase sync intervals, and ...
6
votes
2answers
603 views

Is there a black list of applications that drain battery fast?

Many people complain about some applications draining batteries fast because of bugs or misconfiguration. Is there a black list of such applications that are not energy-friendly?
6
votes
1answer
2k 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 ...
6
votes
3answers
9k 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 ...
6
votes
2answers
5k views

Why is the com.android.browser process draining my battery?

I have a Samsung Galaxy Note with stock 4.0.4 ROM. The battery drains very fast and the phone is often warm. Reboot doesn't help. Settings says that com.android.browser (Internet) uses most of the ...
6
votes
1answer
614 views

Will charging a smartphone while it is in a case lead to damage? [closed]

Will it harm my Razr to charge it while in an Otterbox case? I heard that would cause excessive heat which would damage the battery or shorten lifespan. True?
5
votes
2answers
123 views

Bought a new battery, do I need to calibrate it?

My original battery is bloated and is dying quickly after a full charge so I now bought a replacement. Do I need to calibrate this new battery using a calibration app?
5
votes
3answers
12k 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 ...
5
votes
2answers
10k views

What do CPU Total, CPU Foreground, and Keep awake mean?

I've been keeping an eye on my battery usage on my Android device (HTC One), mostly to see if I can drain it during a full work-day, and I came across the app usage details under the Power settings. ...
5
votes
1answer
998 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 ...
5
votes
1answer
882 views

How much battery does using live wallpapers drain?

I know they are unnecessary, but they look so cool!
5
votes
3answers
6k 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.
5
votes
1answer
23k 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
4k 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", ...
5
votes
2answers
9k views

Google Services battery drain on Galaxy devices

Here are screenshots from my three Samsung Galaxy devices: Samsung Galaxy S3 (left) and Samsung Galaxy S4 (right; click images for larger variants) Samsung Galaxy Note 10.1 2014 (click image to ...
5
votes
1answer
175 views

When to know it's time to replace the Nexus One battery?

As we all know, battery consumption rate (i.e. "per hour") is not very standardized and its highly dependent on actual use, per user. This makes it very difficult for me to know whether I need a new ...
5
votes
4answers
7k views

Android Antivirus Software (solution and battery life relevance)

Is there a security solution for Android that's vastly regarded as "the best" one at the moment or is it like in the PC world where there are 3-4 which are "the best"? Also, what should I expect to ...
5
votes
1answer
16k 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 ...
5
votes
3answers
1k 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 ...
5
votes
1answer
3k 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 ...
5
votes
2answers
2k views

How to optimize energy consumption during GPS tracking?

Very often I use my phone and the app MyTracks or GPSTrackerLite to track my hiking/biking tours. This really works great and I'm thrilledy by the lot of possibilities in combination with google ...
5
votes
3answers
4k 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 ...
5
votes
3answers
216 views

Configure power control in notification pane

I just bought an Alcatel One Touch 995 with Gingerbread 2.3, when I display the notification the notification pane I have some icons I can click to activate GPS, wifi, bluetooth, rotation... I know ...
5
votes
1answer
838 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 ...
5
votes
1answer
3k 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 ...
5
votes
1answer
179 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 ...
5
votes
1answer
872 views

Can I change the level for “Connect your charger”?

My phone HTC Desire on cyanogen mod 7 shuts it down if the battery level is 18%. Can I change this level to something lower?
5
votes
1answer
2k views

Does switching user accounts in Lollipop affect battery life or performance?

I recently updated my Moto G2 to Android Lollipop via OTA update. I've successfully installed the update(around 500mb i guess). I saw the new feature of adding new Guest and New user acccounts just ...
5
votes
2answers
3k views

Google Search App Draining Battery on KitKat

I am talking about the app that shows up as "Google Search" in the Battery statistics. My Phone is a Nexus 4 on KitKat. This app draws a lot of battery, up to 50% in idle standby. It also has a ...
5
votes
3answers
6k 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 ...
5
votes
1answer
282 views

Does APNdroid eat battery?

Someone suggested that APNdroid will cause your battery to drain because your phone is continually attempting to connect to the disabled APN. Makes sense, but I wonder if there's something I'm ...
4
votes
2answers
864 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 ...
4
votes
5answers
959 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?