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

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0
votes
1answer
592 views

Battery Status Indicator Error?

Okay so I have a very interesting story to tell.... Here is what happens... I charge my phone at night, wake up in the morning, pull it off the charger, about 9-10pm it drops to about 15%, which ...
0
votes
0answers
428 views

unable to charge Google Nexus I9250

I am unable to charge my phone most of the times. When I connect my phone to the USB cable which is in turn connected to the computer or charger, most of the times (about 90 percent), I am unable to ...
0
votes
1answer
341 views

Samsung Galaxy s3 Battery life

How long should a Galaxy S3 battery last? My phone is brand new and today it was on standby for most of the day (it dropped 10% while being on standby for 3hrs), I only used the internet for about an ...
2
votes
1answer
345 views

How to switch the GSM/3G module off?

I only use my smartphone (Samsung Galaxy Chat) as a "pocket computer" (with WiFi) and don't use it to make telephone calls (I use a dual-SIM "dumbphone" for this). All the time it shows a cellular ...
1
vote
1answer
2k views

Battery charging indicator and USB has, sort of, stopped working on my Samsung Google Nexus I9250

I know the battery is still being charged because 1) when I power off the phone while the phone is plugged into a USB connector the screen shows the battery symbol with a lightning bolt and then a ...
1
vote
1answer
4k views

Is it better to detach a charger when my Android device gets fully charged? [duplicate]

When using my Android device at my desk, is it better to (from a battery health point of view) detach a charger as soon as the device gets fully charged, or is it ok to keep it on the charger? I like ...
1
vote
1answer
522 views

Frequently changing battery from mobile

Is is bad for a device to change battery frequently from mobile? I have one extra battery when my first battery got dry I removed it from mobile and put the second charged battery. Is it bad for the ...
6
votes
1answer
396 views

What does a red battery icon indicate?

While charging my Jellybean 4.1 device at my PCs' USB, I see the following red battery icon in the notification bar: What does the red color indicate?
3
votes
1answer
4k views

Looking for a consistent answer about battery calibration

This forum is full of questions about battery calibration. The thing is, that either I'm blind or one answers contradicts others. In particular: For example forums says, that battery should be ...
2
votes
1answer
987 views

What is the difference between “Screen On” and “Awake”?

I can possibly understand why the phone can be Awake without having the screen on (background stuff), but how can the screen be on without it being awake? If relevant my device is the Nexus 4 ...
1
vote
1answer
55 views

Closely monitoring charging (with bike charger)

I bought a bike charger for my Sony Ericsson Xperia Mini Pro sk17i . When I cycle, the phone says that it is being charged, but apparently it is not because the battery percentage doesn't increase. ...
0
votes
1answer
38 views

Apps uninstalling on battery death

I have an HTC Incredible smartphone. Every time the battery dies during normal usage, my applications uninstall. Why does this happen, and how can I prevent it from happening in the future?
1
vote
0answers
107 views

Exotic case of Galaxy Nexus not booting

Symptoms : Put battery into Galaxy Nexus (tried with two different including a brand new one) Plug cord to USB host or charger Large battery charge indicator icon appears in the middle of the screen ...
1
vote
3answers
94 views

Upload battery status to a website

I would like to maintain a central list of the battery status of my devices. For my Linux laptops, I will write a small shell script that reads the battery information from the kernel and uploads it ...
1
vote
1answer
75 views

Are there any issues in storing an Android battery?

I want to buy a 2nd battery for my i9100 because the phone is getting old and I don't know if parts will be easily available a couple of years on (don't want to upgrade, I like it too much), but I've ...
3
votes
0answers
430 views

Android stuck in downloading mode

So what happened is that my mobile (Galaxy S4 - GT-9500) ran out of charge. When I plugged in the charger and tried to turn it on, it went directly to what I think is the recovery mode (Android logo ...
2
votes
0answers
37 views

Battery percentage going down while charging! [duplicate]

(device: Samsung Galaxy S 3) I've just witnessed something rather strange: while tethering to my laptop, with the phone being plugged in a power source (the charger I got with the device) - the ...
1
vote
2answers
3k views

Samsung Galaxy Nexus doesn't detect charger

This happened yesterday night first. My phone's battery was very slow, so I decided to charge it. It didn't start charging after plugging in the charger. Frustrated, I kept trying with different USB ...
1
vote
1answer
185 views

Android power Usage - How to monitor

TL;DR: Is there some reasonably time-efficient way to find out what programs cause Android OS Services to drain battery? On a regular basis I find that some app causes my phone to run hot and drain ...
1
vote
1answer
49 views

how long can the battery in my new mobile stay idle till first use

I bought a Samsung Galaxy 6 months ago. Have not used it yet nor have charged the battery atleast once. I am worried about the battery. Can i keep it idle two more months.
30
votes
5answers
15k views

Why are some USB chargers slower than others?

It seems with USB chargers for my android phone, not all are created equal. The first pic is the official charger which came with my phone (galaxy nexus). It charges quickly, from 0 to 100% in a ...
1
vote
2answers
6k views

Turn off cell standby?

I have a Droid Charge, but I live overseas and it's not an international phone so I can only use it for wifi. It is constantly searching for a signal that doesn't exist and it's eating my battery up! ...
4
votes
1answer
5k views

How does the Android estimate the battery level without a current sensor?

The BatteryManager class doesn't have the metric for current: http://developer.android.com/reference/android/os/BatteryManager.html And then I have found this post: ...
4
votes
1answer
2k 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 ...
0
votes
3answers
212 views

Wifi battery saving tips or automation

A person that is not expert in computers & technology (including smartphones) bought a Galaxy Mini S3 and asked me some help. He is very old of age. The problem with this phone is that Wifi ...
1
vote
1answer
529 views

Mediaserver is eating my phone's battery?

I'm using dual boot on my SGS2 with CM10.1 and JellyBam and both running fine but with some issue of mediaserver draining my phone's battery like a crazy nut. I have checked on Google and got many ...
-2
votes
1answer
26k views

Unusual battery drain on note II [closed]

My Note 2 battery is driving me insane. I have been using my Note 2 for like 2 months. And I had been following the recharging cycle where you only charge the battery when it reaches 5% or less and ...
3
votes
2answers
1k views

galaxy s3 not charging

I have a samsung galaxy s3. It is only 7 months old. Its battery is not getting charged. I have tried to reboot and take the battery out and put it again,it still doesnt get charged. The usb port is ...
2
votes
1answer
2k views

Why is my battery low only a few hours after charging?

Twice recently I have charged my Samsung Galaxy Ace at night and when the phone indicates it's fully charged I unplug the charger only to be woken a couple of hours later thinking I have a text come ...
3
votes
2answers
7k views

Why doesn't my phone charge?

Okay, so I already ordered a new battery, but in the mean time. Why won't my phone charge? I have tried every charger/cable in my house and car (over 10 chargers and around 15 cables). Double ...
1
vote
0answers
4k views

Custom ROM to improve Galaxy I9000 battery life (if mostly standy)? [closed]

I have a Galaxy S I9000 (2.3.6, Gingerbread.XXJW4) and use my phone minimally (mostly just on standby). I would like a least a couple of days, and hopefully a week or two between recharges if possible ...
0
votes
0answers
711 views

Why will my Samsung Galaxy Gio not turn on

My Samsung Galaxy Gio hasn't been working properly for a few days, and now it won't even turn on. I can get it to the recovery page, but it will not do anything after that. I was thinking that it ...
0
votes
1answer
430 views

HTC One S won't boot after battery fully drained

Today the battery of my HTC One S got completely empty and when trying to reboot it's just stuck on the splash screen. I am rooted and have Trickdroid 8.1 installed. This is an 4.0.4 ICS ROM. I've ...
8
votes
3answers
4k views

How to allow auto-update of apps in Play Store only when plugged in?

I would like apps to be updated automatically when my phone is plugged in (charging) and on wifi. I can easily allow auto-update only when wifi is on with the appropriate option in the Play Store ...
0
votes
0answers
1k views

Charging paused, battery temperature too low

I dropped my Samsung Galaxy S2 in water, and now when I plug it in I get a message that says: Charging paused, battery temperature too low Is there any way to fix this?
3
votes
4answers
2k views

my samsung galaxy 2 battery is draining to fast!

I have an Samsung Galaxy S2 GT i9100. I have had it for quite a time, but today I noticed something strange: First my battery had not been charging while I was sleeping: when I woke up I had only ...
1
vote
1answer
918 views

Battery getting charged with ultra speed and continuous at 1%charge for more than 9 hrs

My neo v battery getting charged with in ten min from 0 to 100 percentage( Exponential growth graph ) with ultra speed and getting discharged to 1%( it also give alert showing last 1% left, keep ...
3
votes
0answers
576 views

Nexus7 Stuck in Reboot Following Full Discharge [duplicate]

I am experiencing the same symptoms as described in the following: " Nexus 7 is stuck in reboot loop after full discharge " My Nexus 7 is full discharged. I have it connected to Factory AC-to-USB ...
2
votes
0answers
220 views

time_in_state wrong value

I've been using apps like "BetterBatteryStats" and "CPUSpy" to see what CPU states my phone is most frequently in, but both are reporting the wrong clock frequency. I can only assume they are using ...
1
vote
2answers
489 views

How to prevent Nexus 7 of charging the battery every time when connected to a USB?

Hello fellow Android enthusasts, I recently bought a Nexus7 that I want to use for development. The thing is, every time I connect it to my USB, in order to test some apps on it, it starts charging. ...
6
votes
5answers
41k 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 ...
0
votes
0answers
385 views

Does the Nexus 4 battery drain faster if it has no SIM card inserted?

Does the Nexus 4 battery drain faster if it has no SIM card inserted?
6
votes
1answer
11k 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 ...
4
votes
1answer
14k 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 ...
1
vote
0answers
256 views

Phone interrupted during first charge, battery damage?

Got my new Sony Xperia Go and after draining its initial power, plugged it in to charge. Red light was on, but the battery icon did not show that it was busy charging. So I unplugged it and ...
3
votes
0answers
297 views

Verizon Galaxy Nexus Discharging When Plugged In Even After USB Replacement

I've got a Verizon Samsung Galaxy Nexus that as of a few weeks ago quit charging - in fact it quickly drains the battery (discharges 2% / minute if not more) while plugged in. I tried different ...
3
votes
3answers
4k views

Nexus 10 Instantly Lost Battery Charge

I had my tablet at around 90% charge with nothing running on it and went to bed. I wake up in the morning to find it will not turn on. When I plugged it in the battery icon would appear showing it was ...
-1
votes
0answers
380 views

What happens when the Home button on Android phone is pressed? [duplicate]

Possible Duplicate: What happens to a running program when “home” button is pressed in Android phone? My friend raised a concern that pressing the home button is not advisable and it drains ...
2
votes
3answers
13k views

Will playing a game in a Android phone while charging damage or cause harm to the battery or the phone?

Will the following situation damage or cause any harm to the battery or/and the phone: The phone is being charging (regardless it is using the electrical outlet or via USB) and .. You are playing a ...
2
votes
0answers
807 views

How to properly charge a Lithium Polymer battery [closed]

My battery is Lithium Polymer. I want to ask the following: Is a Li-Po battery essentially the same as a Li-Ion battery? Can I use my phone while it's charging? I've read that you have to calibrate ...