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

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8
votes
3answers
9k views

Why is Android System always keeping my phone awake?

I woke this morning and discovered that my phone's battery was at 70% capacity, even though it had been fully charged when I went to sleep. I went into the battery settings, and found that Android ...
2
votes
0answers
35 views

Can over charging damage battery? [duplicate]

Possible Duplicate: Does constant charging harm my Android cellphone? Indeed, this is a duplicate of: Does constant charging harm my Android cellphone? Just for the record -- let's say I ...
2
votes
0answers
167 views

Prevent complete charging?

I'm looking for a way to prevent my phone from completely charging every time it is connected to my computer. I want to reduce the battery's capacity loss, as it is non-replaceable, and it seems to me ...
1
vote
0answers
909 views

Samsung Galaxy III screen turning on by itself and draining battery

Even though I haven't received any notifications, the screen on my Samsung Galaxy III keeps turning on and draining my battery. What's causing this?
1
vote
1answer
1k views

How can I turn off the “low battery” noise?

I've started getting a loud beep notification when my battery hits 15%. Possibly this happened after an Audio Manager update but I don't see any settings in the app to change it. Previously the ...
0
votes
1answer
2k views

Turn off phone by holding the power button?

I've been having a small case of my screen not turning on at times. It happens on a 1 out of 100 basis. Anyway, I can confirm that the phone did not shut down because I can take screenshots (via power ...
14
votes
1answer
2k views

Battery drops 20% after reboot!

Battery on Samsung Galaxy S2 on ICS likes to drop after reboot. Actually it happened when I was on Gingerbread as well. Anyone can help me fix this? Screenshots:
16
votes
1answer
5k views

How does Android obtain battery temperature?

I am curious about the way Android phones obtain the battery temperature. Android has an API called BatteryManager which provides the value of instant battery temperature, but is there an actual ...
4
votes
1answer
739 views

Is recalibrating the battery after flashing a new ROM really neccessary, and if yes, why?

The description of the app, Battery Calibration, claims that after changing ROMs you should recalibrate your battery gauge. It has good reviews so it seems like the general concept is sound and trying ...
6
votes
2answers
6k views

How does the App “Battery Repair” work?

I just found this App (Battery Repair) on the Google Play Store, my question is how can it make my battery last longer. What optimazions are they doing? Has anyone tested this tool, does it work?
1
vote
1answer
2k views

can sony xperia u(st25i) 's otg be connected to external power?

Can Sony Xperia U be connected to a Y-Cable to provide extra power for OTG to avoid phone battery consumption? I'm asking this because the phone is already giving power ,will that make a short ...
1
vote
1answer
3k views

My phone is giving inaccurate readings of battery level

I have a Huawei u8160 running Cyanogenmod 7.2 . my phone is giving inaccurate readings of the battery charge level (e.g one day morning it was 33 that day evening it became 34 without touching the ...
1
vote
0answers
356 views

Inconsistent battery status and poor battery performance after ICS update on HTC Sensation 4G

Recently I updated my HTC Sensation 4G from GB to ICS via official update. After ICS update, I am facing many types of problems in my phone: Battery drain - 100 to 0% within 2 hours while browsing ...
7
votes
1answer
790 views

Why do I need to remove my battery periodically to fix phone problems?

On my HTC MyTouch 4G (Android 2.3.4), twice now the diagnosis for odd failures was to take the battery out, wait a minute, and replace it. (The first failure was loss of network; the second was web ...
5
votes
3answers
47k views

Charging paused. Battery temperature too high or too low

I have a Samsung Galaxy player that has been giving me the message "Charging paused. Battery temperature too high or too low". I left it unplugged and powered down all night, and it still gave me the ...
8
votes
1answer
457 views

What happens to the battery during bootloader/recovery?

I want to know what happens to the battery (does it charge/discharge/stay constant?) when the device is in bootloader or recovery mode. In both of these modes, a USB may or may not be connected. If ...
4
votes
1answer
146 views

How can I monitor the device battery consumption?

I need information about which applications or hardware features discharge the battery. Built-in Android option for this doesn't fit because not all devices have it. Also it would be a great advantage ...
4
votes
1answer
7k views

How to debug a battery issue?

I have HTC Sensation 4G. I have a very peculiar issue with the battery. I've been using the phone for just over one year now. There are some periods (about 7 to 15 days) when battery performance is ...
5
votes
2answers
7k views

Can't find low battery threshold setting (Samsung Galaxy S3)

When the phone's battery reaches ~20%, I get the message to connect my charger on the lock screen. Is there a way to lower the threshold for the notification -- similar to the setting for a laptop? ...
3
votes
1answer
2k views

Tab stays on 216mhz instead of Deep Sleep

I am using Samsung Galaxy Tab 10.1 and I have installed Cpu SPY. I have noticed that when I leave the tab in the night, WiFi OFF, flight mode on, it does not go to Deep Sleep but stays on 216Mhz. I ...
6
votes
3answers
2k views

Although I was told to charge my Android device before first use, it was already charged. Have I been given a phone rejected by someone else?

I have just received my 'new' HTC one V. The instructions clearly state to charge the phone up before first use, yet the the phone switched on and showed full charge straight away, before I had chance ...
0
votes
2answers
1k views

Android phone discharges when it has 20% [duplicate]

Possible Duplicate: Why does my Nexus One power off with 15% power remaining? I've noticed that when my Google Nexus One phone is showing ~20% of the battery, after using it for a minute or ...
8
votes
4answers
5k views

Which consumes less battery: Wi-Fi or 2G data?

I just want to know what consumes less battery Wi-Fi or 2G Data. My battery last long for 12- 16 hours only. I know there are lots of application which continually running and fetching data from ...
1
vote
1answer
302 views

What information is more reliable — battery capacity or stand-by time?

Stand-by time (not talk) because I rarely use the phone actually ;-) Let's say there are two phones -- Xperia Mini and Wildfire S -- both have very similar battery 1200 mAh and 1230 mAh ...
1
vote
0answers
115 views

How do I turn off my maps app (that's taking 93% of my battery) on the Smart II? [closed]

I have the new Smart II. Maps is using 93 percent of my battery and I can't turn it off. I keep pressing force close but it comes back on a few seconds later.
13
votes
2answers
5k views

Why my phone battery has four terminal? what is the use of the fourth?

I have a LG Optimus One (P500). For sometime I am wondering why my phone's battery has four terminals. I am aware that two terminals are for the positive and negative points and the the third connects ...
3
votes
1answer
1k views

Nexus 7 System error 'show low battery logo'

Today I finally got my Nexus 7 though the post and turned it on; I was just checking charge. I got an 'out of battery' UI message and the tablet then turned itself off. I plugged in the USB charger ...
4
votes
3answers
14k views

“Charging paused. Battery temperature too high” while connected to car charger

I have a Galaxy S2 with ICS. When I use it in my car, while it is charging from a car charger, I occasionally get this popup: "Charging paused. Battery temperature too high" Also Waze is running ...
3
votes
1answer
15k views

Show battery percentage on Nexus 7 (Jelly Bean)

Is there a (preferably built-in) way to show the remaining battery percentage in the status bar on the Nexus 7 (4.1.1)?
2
votes
1answer
2k views

Why does my myTouch 4G lose battery so fast?

So I formatted my phone today. I have not used it, and it was at 100% this morning. No apps installed, the screen was only on for about 10 minutes. Yet when I go to check it now, about 12 hours later, ...
2
votes
3answers
5k views

Reset battery history after unplugging charger?

As far as I can tell, the stats on the Battery page of Settings records the time from when the battery is booted up onwards. What I'd rather want it to do, is to reset that counter whenever I ...
0
votes
1answer
1k views

Battery Savers with the Android 4.0 [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android device? How do I save on my battery on my new 4.0 (Ice Cream Sandwich) device? All I have seen so far is a bad ...
0
votes
1answer
703 views

How to have a long Standby and Battery -life? [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android device? My Huawei Android is dead after one day. I am looking for ways to extend the battery life a new Android ...
1
vote
1answer
3k views

Reset battery status after changing battery?

If I plug in the charger of my Galaxy Nexus, I'm able to replace the battery without switching the phone off. However, the battery status does not adjust to the new battery. For example, if I replace ...
5
votes
2answers
1k views

Can I save my htc desire if the battery is dead?

I ran my HTC Desire on a 0% charged battery - and it shut it self down. Now it won't charge anymore and wont start even when plugged in. What are my options?
4
votes
2answers
2k 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
270 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
166 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
2k 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 ...
5
votes
5answers
2k 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
264 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 ...
8
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
3k 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
496 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 ...
14
votes
4answers
5k 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
134 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
433 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
2k 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
338 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
717 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 ...