For questions related to batteries on Android devices. Questions about battery life should be tagged with [battery-life]

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4
votes
3answers
3k views

my battery charge indicator is continually flashing on and off

My battery charge indicator (the screen info saying % full), flashes on/off/on/off, etc. sometimes. I've switched the battery to a spare to see if that helps but it didn't. When it does happen, ...
0
votes
1answer
316 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
2
votes
3answers
182 views

Battery usage by certain applications

Can I find out how much battery takes running of certain application? The goal is to minimize using applications that take a lot of battery and maximize battery persistence before having to recharge.
1
vote
2answers
3k views

Asus Transformer slow charge

My ASUS Transformer TF101 charges extremely slowly using the original power adaptor. I'm trying to figure out the cause. Here are all my knowns: The power block (wall to USB adaptor) charges my ...
6
votes
7answers
3k views

Battery drains even when plugged in while using Nav app on long road trips

I have a Nexus S running Android 4.0.3 and Google Maps 6.8.1. When I use the Google Maps navigation app, the battery slowly drains, even when plugged into my car charger. After 5-6 hours, the phone ...
2
votes
2answers
311 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 ...
9
votes
5answers
4k views

Is there a quick-fix for the Galaxy Nexus when it signals “charging” without beeing connected via USB?

My Galaxy Nexus goes into charging mode but when it isn't plugged in. The battery symbol then indicates a charging and when in suspend mode, the display turns on which drains battery rapidly. I am ...
11
votes
6answers
4k views

Is it OK to swap batteries while phone is connected to wall charger?

It takes a few minutes to shut down and restart the phone, it would sometimes be handy to be able to swap batteries without shutting down (i.e. swap in a fully charged battery before going out). ...
2
votes
1answer
570 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 ...
17
votes
4answers
6k views

Cut power to a phone without a removable battery?

Well just as the title says, if you have a phone without a removable battery (HTC One X) and it freezes while modding it, how do you cut the power if you can't pop out the battery? I could see non ...
1
vote
1answer
141 views

Can installing Android on a Netbook reduce its power consumption?

I am running Linux Mint on my old netbook and it really consumes a lot of power. If I install Android, will it actually consume less power? I actually want to use the same device for at least 2-3 ...
-2
votes
3answers
479 views

Is there a reason why I need to remove my phone's battery after it crashes before I can turn it back on?

I have a Galaxy Nexus running on 4.0.1. I've noticed that when it crashes it usually requires a battery pull to get it working again. I was wondering if the pulling of the battery to get the phone to ...
2
votes
2answers
3k views

LG P500 Not Starting After Full Discharge

My LG P500, with FroYo, doesn't seem to be working. I let my battery completely die and now, even while plugged in, it won't turn on. Is this normal and should I just wait the battery to be charged ...
1
vote
1answer
410 views

Phone is too flat to charge

My phone died today, and now it won't charge at all on the charger it came with. I don't think the battery has failed, as it still gives me just as much charge on a full charge as always. The phone is ...
3
votes
1answer
946 views

Does wi-fi sleep policy “never” mean that my phone's battery will be drain a lot faster?

I have just decided to change my settings on the wi-fi, because it seems to give me a hard time regarding the fact that the some application are "unable to connect to server". However, I am worried ...
8
votes
4answers
10k views

My phone thinks it's charging

After upgrading my Galaxy Nexus to 4.0.4, it keeps thinking the cable is being plugged in and out all the time. The battery discharges at a normal rate, even though the screen keeps lighting up as a ...
6
votes
2answers
390 views

Display turns on at midnight?

Every day at midnight the display on my tablet (Asus Transforer TF101 ICS) turns on for a few seconds. Ordinarily, this wouldn't be a big deal, but I am using the Screebl application, which keeps the ...
8
votes
1answer
21k views

How to set gmail sync frequency?

I want to know how often Gmail checks for new emails because I need longer battery life. How can I see/set this? I want to set it so that, for example, it checks for new mail every 10 minutes and ...
5
votes
1answer
175 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
617 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 ...
4
votes
2answers
162 views

Do phones have a power supply?

This is definitely a noob question, I'm not an engineer but as far as my knowledge goes, the power supply on a phone would be its battery. However, my Nexus One stopped turning on recently, the ...
16
votes
3answers
6k 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 ...
3
votes
1answer
604 views

HTC G2 crashes, comes back on falsely saying battery level is 0%

Recently my G2 has started dying whenever I use it for more than 5 consecutive minutes. When I reboot it I need to plug into a power source or it will not reboot and it reports that I have 0% battery ...
5
votes
1answer
785 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
1k 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 ...
17
votes
1answer
8k views

How does Android calculate battery consumption by apps?

How does Android measure energy used by individual hardware component? How does Android measure energy used by each individual process?
3
votes
1answer
517 views

VZW Galaxy Nexus exhibiting bizarre charging behavior

Lately I've noticed some weird behavior with my Galaxy Nexus. I am rooted, but running stock ICS. Here is what it's doing wrong: Phone sometimes will not charge, I must turn it off for it to start ...
3
votes
1answer
1k views

Is there an equivalent for coconutBattery (Mac) on the Android?

My G2 android used to last an entire day without charge for the past year, now it appears that it gets to very low energy at about halfway through the day, is there something like coconutBattery (Mac) ...
1
vote
1answer
662 views

HTC G2 Phone randomly turns off w fully charged battery on Gingerbread 2.3

My HTC G2 running Android Gingerbread 2.3 randomly turns off while running applications such as the camera with full battery. After the random turn off I try to turn the phone on again and it won't ...
1
vote
0answers
1k views

Battery Problem in Samsung Galaxy Tab GT-P7510

I have a Galaxy Tab 10.1 (GT-P7510) with Android 3.2 and I have the following problem: I can´t turn on the tablet. I tried all the different ways with the power button, pressing 5, 10 , 100 seconds, ...
5
votes
1answer
267 views

AC-USB Charging Device Makes Sounds when Device Fully Charged

This might not be the right place to ask this question, as it falls under the purview of electronics, however that SE is not about consumer electronics. And this phenomena has only happened with ...
5
votes
0answers
2k views

How to prevent shutdown when low battery? [closed]

When I'm using my hacky backlight modulation program which toggles screen off and on fast enough to simulate ultra-dim brightness Android sometimes gets wrong info about battery charge (it sees 0% 0V ...
-1
votes
1answer
2k 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 ...
3
votes
1answer
958 views

My Device Keeps Rebooting (LogCat attached)

For some reason, after I changed my device's battery. It just keeps rebooting and here's a LogCat of the error: E/JavaBinder( 1305): *** Uncaught remote exception! (Exceptions are not yet supported ...
2
votes
1answer
6k views

How can I remove the battery from my Samsung P1000?

My P1000 tablet needs rebooting but will not respond to any input commands. If I remove the battery I believe this will force the tablet to reboot. How do I get to the battery?
8
votes
1answer
877 views

Where does “battery usage” app collect its data from?

The Battery Usage screen gives nice stats about which application has consumed how much battery. The stats are based on the time each process has kept the phone awake, the CPU time, etc. etc. There ...
17
votes
3answers
55k 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 ...
1
vote
1answer
172 views

New battery - any special treatment required? [duplicate]

Possible Duplicate: How to break in a new cell phone battery? Admittedly this could be aimed at any mobile device, but I have a new battery for a HTC sensation. To get the best out of it, ...
4
votes
1answer
113 views

Can I buy the Samsung official extended battery for the UK Galaxy Nexus?

Samsung have released an extended battery for the US Galaxy Nexus. I know the US and EU versions have a slightly different shape, so was wondering if this extended battery would fit my UK Galaxy ...
4
votes
1answer
274 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 ...
1
vote
1answer
340 views

Will Droid Bionic with Extended Battery Fit Inside the Otterbox Defender Case?

I have a Droid Bionic and I keep it in an Otterbox Defender case. I would like to get the extended battery but am concerned that my Bionic might no longer fit within my Otterbox. Has anyone tried ...
2
votes
3answers
215 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
2k views

Sudden crashes and drops in battery charge

Recently I've experienced random and sudden crashes on my Galaxy S2. There is no warning or shutdown message. Suddenly it's just powered off. What could cause this? Is there any way to see what was ...
7
votes
3answers
571 views

Is it possible to change the background automatically when charging battery?

This is a feature of older nokias, I would like to have it on android! On a related note, it would be nice to have a different background when silenced or on airplane mode.
22
votes
4answers
18k 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 ...
3
votes
1answer
209 views

Background apps and the battery

Every time I use Google Search, the browser or the music player of my Samsing Galaxy S II (Android 2.3), even if I push the back button until it brings me back to the home screen, the apps keep ...
3
votes
0answers
623 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 ...
3
votes
4answers
1k 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 ...
0
votes
1answer
401 views

Motorola Defy in a reboot loop

I bought a new Motorola Defy today. The phone switches on then asks to be connected to a Google account, I try to type in my login details and it reboots. The battery shows 100% but when in switch ...
2
votes
1answer
720 views

How to know how much battery in terms of hours and minutes is left on my phone?

I want to know the remaining time of my cell phone battery. Android only gives me how much battery in terms of percentage has been consumed since the last charging. However, what I want is to know ...