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

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6
votes
1answer
13k 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
167 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
485 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
158 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 ...
15
votes
3answers
5k 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
581 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
675 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
967 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 ...
14
votes
1answer
6k 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
504 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
895 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
609 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 ...
2
votes
0answers
220 views

My Galaxy tab shuts down on its own [closed]

I have a GT-P1010. Whenever I leave it for a while it automatically shuts down then the battery drains out and the home button won't work. It's been happening repeatedly.
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
227 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
1k 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
1k 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
883 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
5k 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?
7
votes
1answer
732 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 ...
13
votes
3answers
42k 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
164 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
111 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
261 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
310 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
207 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
404 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.
17
votes
4answers
10k 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
195 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 ...
4
votes
0answers
578 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
392 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
466 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 ...
3
votes
1answer
114 views

How do you open an EVO 3D to access the battery or SD card?

How do I open an EVO 3D? I have one right here and I tried googling it, but I dont have the manual and it isn't intuitive. I would like to view the microSD card and switch it out at will.
5
votes
4answers
3k views

Is my phone liable to explode if I charge it with a charger that came with a different phone?

My friend and I both have droids and we often user each other's wall chargers out of convenience. I was told that it's possible that my phone might explode if it's charged with a charger that wasn't ...
5
votes
2answers
7k views

Has anyone found out why some BIONICs won't charge fully on non-BIONIC wall chargers?

This seems to be a fairly common issue. Upon attempting to charge my Motorola DROID BIONIC with two non-Motorola microUSB wall chargers, I couldn't get the phone past 40%. With the Moto charger, it ...
2
votes
4answers
4k views

Galaxy S 2 battery won't charge while being on

First of all, LOVE the Galaxy s2, even though it has some problems - which phone doesnt, right? I've had the Samsung Galaxy S2 for 2 months. It worked fine. Since a week my phone won't charge the ...
4
votes
1answer
675 views

The battery is discharged suddenly on Galaxy S2

Sometimes after I fully charge the phone, and disconnecting it from the power, the battery suddenly drops to 97%, it is normal? I already made a battery calibration past week. Well, this happened only ...
1
vote
1answer
707 views

Can I use a larger battery in my Galaxy S?

I have standard 1500mah battery in my Samsung Galaxy S phone and it lasts around 24 hours. Can I use a larger (say 1650mAh) battery so I can get a bit more battery life?
9
votes
6answers
29k views

What can cause “Android OS” process to use high percentage of battery?

I've read a bunch of forum posts about the Android OS battery drain bug. This is where the 'Android OS' process is showing large percentages in the battery statistics. For me, I'm running 2.3 ...
0
votes
1answer
265 views

Is there any tool that tells me the min and max battery consumption rate of an app?

Is there any tool that tells me the min and max battery consumption rate of an app?
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 ...
7
votes
2answers
7k views

What is the difference between the Android OS and Android System?

When I open my Battery Usage, there are two components enlisted as Android OS and Android System. What is the difference between these two?
1
vote
1answer
220 views

Can CPU intensive apps cause sudden shutdowns?

Lately my Droid Incredible has been shutting down spontaneously when using my GPS for periods over 30 or 45 minutes. After the shutdown the back of the phone is pretty hot (and that's with a case on ...
1
vote
3answers
341 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
179 views

Wi-Fi sleep policy when mobile networks are turned off

I have a fairly expensive data plan and I don't want my phone to use any of it, so it turned off mobile networks in Settings. When I access the Wi-Fi sleep policy setting, it says it switches to ...
4
votes
1answer
220 views

Does my Android phone uses battery or outlet power to operate while being charged?

I am curious about knowing which power source does my android uses up, while it is being charged while switched on.. I know i can test it by keeping it in charging and pulling the battery.. but i am ...
4
votes
2answers
757 views

Is battery calibration important for Android phones?

I heard that battery needs to be calibrated for a first few usages. I heard that battery needs to be calibrated every 40 charge cycles. I heard that i must not let battery get too low and not ...
4
votes
2answers
2k 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", ...