For questions related to batteries on Android devices. Questions about battery life should be tagged with [battery-life]
2
votes
0answers
21 views
Battery percentage going down while charging!
(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 ...
0
votes
1answer
30 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 ...
0
votes
1answer
17 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
12 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.
24
votes
4answers
1k 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
1answer
55 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! ...
3
votes
2answers
245 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
186 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
2answers
61 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
194 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 ...
-1
votes
1answer
1k 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 ...
1
vote
1answer
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
217 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
501 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
2k 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
86 views
Full Battery Notifcation, Galaxy Nexus running 4.2.2
I have a Galaxy Nexus which recently updated to 4.2., and I noticed this occasional beeping when it was plugged into the charger. The only thing i can think of is a full battery notification. How do I ...
0
votes
0answers
310 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
188 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 ...
5
votes
1answer
639 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
473 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
1answer
524 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
167 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
215 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
56 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
264 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. ...
7
votes
5answers
14k 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
178 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?
3
votes
1answer
3k 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 ...
1
vote
1answer
3k 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
108 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 ...
2
votes
0answers
244 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 ...
2
votes
2answers
973 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
1answer
174 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 ...
1
vote
2answers
2k 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
301 views
How to properly charge a Lithium Polymer battery
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 ...
1
vote
2answers
262 views
Does USB tethering degrade droid batteries?
I want to know if tethering with my Xperia Neo V via USB will affect the battery capacity in any negative manner other than the usual.
0
votes
1answer
455 views
Why the battery need to be loaded before to root?
I read in some tutoriel that for the root to be working, battery needed to be loaded around 70 at at least.
Why is it so?
Does it endanger the phone, or it just prevent the root to be working for ...
1
vote
2answers
2k views
Can you actually determine the mAh of a battery?
You can skip the story part but for better reference, please read it:
A Little Story
My phone claims it has a battery of 4000 mAh that lasts for 3 days. I got the phone, really psyched because of ...
0
votes
2answers
177 views
Saving battery life: pressing home button or back button
My friend said when using an app, pressing the home button saves battery life instead of pressing the back button. He thought by pressing the home button, the app stays in RAM so that when you reopen ...
0
votes
0answers
180 views
samsung galaxy s2 battery shuts phone down when plugging in charger
I have a Galaxy S2 and when I plug in the charger on one battery the phone shuts down and will not reboot. On battery #2 (exactly the same OEM) the phone remains usable on the charger. Dilemma that I ...
6
votes
1answer
142 views
How can I see what kind of car charger I have?
I noticed that when using navigation plus GPS my phone (Galaxy S2) still discharges a bit even so its connected to a car charger.
While googeling, I found out that regular USB chargers only charge ...
0
votes
0answers
416 views
Battery charging animation not working [closed]
I put my Samsung Galaxy S 19000 phone on a wet table top. I saw some water droplets in the USB port. When I tried to charge my phone, it is not showing the charging animation which used to be there on ...
0
votes
0answers
23 views
Aside from the usability improvement, does rebooting the phone as opposed to shuting down and turning on give any improvement?
Is it faster to reboot the phone instead of turning it off and on again? I know in computers when restart is selected the power supply is left on and it doesn't have to perform POST so time is saved ...
10
votes
1answer
7k views
Nexus 7 wont boot after complete discharge
I accidentally let the battery on my Nexus 7 run completely empty, and now it won't start up anymore even after charging overnight. How can I make it work again?
This is what happened in detail: My ...
10
votes
3answers
7k views
Mediaserver using excessive CPU time and battery
I've got a Nexus 4 on OS version 4.2.1 that suddenly started to drain it's battery very quickly. When looking in the battery usage I see "Mediaserver"eating 60% of the battery over time, with several ...
4
votes
1answer
208 views
How to find pid of Battery Service?
I am able to find the pid of System server using ps. And I can find info about the system server process through /proc/pidof system_server. But I dont see (or unable to find) the pid of the other ...
1
vote
1answer
193 views
Why did a crash at 100% battery cause instant drain to zero?
After charging my Galaxy SII (ICS) overnight, I unplugged and started using the web browser. Battery indicated 100%. After 20 minutes the screen went black and the phone rebooted, then it popped up a ...
1
vote
1answer
1k views
Is using chargers of phone not meant for it harmful to the battery? [duplicate]
Possible Duplicate:
Is my phone liable to explode if I charge it with a charger that came with a different phone?
Are Android chargers universal in terms of power (Voltage, amperage)?
As ...
6
votes
3answers
299 views
Is there a way to prevent applications from updating when running on battery
I know you can restrict applications to update on Wi-Fi only.
Can you achieve the same thing with "update when charging on sector only" too?
-1
votes
2answers
502 views
Battery consumption
My stats are the follwing:
Android system 37%,
Stand by 36%,
Inactivity 14%,
Voice call 3%.
I touch in android and appears a lot of programs like
alertrecipients,
google backup transport,
error,
...
