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
265 views

Nexus 4 wont hold charge after screen and battery replacement

I've just replaced my broken screen and put a new battery into my nexus 4 following this you tube vid: http://www.youtube.com/watch?v=AZDAIgwbXk4. When I first plugged in the charger (1A generic usb ...
0
votes
1answer
92 views

short battery life

I have a gs3 running slim bean, and the battery life seems horrible to me. I woke up this morning at 8:00am with 100% battery life and by 1:30pm it has gone down to 23% I have been I barely use the ...
-1
votes
1answer
553 views

Can chinese tablet be used without a battery?

I have a Chinese tablet xpad xpod 7" tablet, bought it 2 months ago, I am already having problem with battery, it is discharging too quickly, so I want to operate my tablet without battery, simply by ...
0
votes
0answers
161 views

Will my phone power off in recovery mode when the battery level gets too low?

Due to a malfunctioning battery, I am unable to keep my phone powered on long enough to drain the battery. As soon as the phone boots, I get an error saying that the battery is at 0% charge and it ...
0
votes
1answer
70 views

Phone's battery is damaged

My phone's battery is very weak. It can't operate without a charger. My phone is doing a lot vibration, which it never did before. Now, I'm afraid if I buy a new battery, it would destroy the new ...
5
votes
1answer
265 views

Battery meter went crazy and now stays at 0%

I have a Samsung Galaxy Discover that worked fairly well until the last week or so. I ran the device down down to 0% - at which point the device shut off. I performed a full recharge and then ...
0
votes
1answer
78 views

About WI-FI battery usage

I keep reading about how much battery does WI-FI use, but when I look in settings > battery, WI-FI shows with < 5% usage when I barely use the phone. And when I use it, the screen takes most of the ...
0
votes
1answer
321 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
365 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
237 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
196 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
3k 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 ...
0
votes
0answers
88 views

My galaxy s3 won't switch on

My galaxy s3 automatically went off after the battery drained out completely. I tried to recharge the battery but was not possible through same phone. I used my friends' phone (Of the same make) to ...
1
vote
2answers
297 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
320 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
3k 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
598 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
50 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
36 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
89 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
80 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
2answers
72 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
316 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
34 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
2k 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
132 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
37 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.
28
votes
5answers
10k 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
3k 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
3k 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: ...
3
votes
1answer
1k 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
194 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
0answers
421 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
21k 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
1k 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
5k 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
611 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
360 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 ...
7
votes
1answer
3k 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
3answers
1k 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
723 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
513 views

Nexus7 Stuck in Reboot Following Full Discharge

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
174 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
1answer
410 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
39k 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
281 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?