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

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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", ...
7
votes
3answers
394 views

Is there a way to tell when the battery is actually at 100%

I recently acquired an HTC Desire Z / G2, and installed Cyanogenmod 7 onto it. Something I've noticed though is that sometimes the battery drains very quickly, and sometimes it does not. Since I have ...
3
votes
3answers
2k views

Replace default battery status icon

Is there any way to replace the default battery status icon with percentage values to indicate battery status? For example as I saw in a screen shot
4
votes
1answer
3k views

Can I use Asus Transformer power supply and dock as with regular laptop?

I couldn't find this information in all reviews, so I am asking here about it -- I would like to get such experience with Assus Transformer: I put everything together -- I plug power supply into the ...
7
votes
2answers
869 views

Why does my Nexus One power off with 15% power remaining?

Once my Nexus One's remaining power drops to 15%, it automatically powers off. On turning it back on again, it reports that it's now on 0% power. Do all Nexus Ones behave like this, or is it just ...
4
votes
1answer
4k views

How do I turn on the battery full notification sound?

Similar to this previous question, but I want to enable the battery full notification sound, not the opposite :) My Galaxy S used to make a nice beep and switch the screen on briefly when the battery ...
2
votes
0answers
767 views

Is it OK to leave my Samsung Galaxy Ace charging all the time? [duplicate]

Possible Duplicate: Does constant charging harm my cellphone? Hello! I have the Samsung Galaxy Ace but the battery life is a bit of a problem for me. Can I leave it plugged in ie. charging ...
6
votes
2answers
357 views

Google Goggles Battery use

I have not even opened the google goggles app in several weeks. Why does my phone report that it is using such a large amount of my battery? This is especially disconcerting considering that this app ...
5
votes
1answer
160 views

When to know it's time to replace the Nexus One battery?

As we all know, battery consumption rate (i.e. "per hour") is not very standardized and its highly dependent on actual use, per user. This makes it very difficult for me to know whether I need a new ...
6
votes
1answer
5k views

Should the phone be fully charged before flashing a rom?

In posts like this, and from other sources, I have heard that the handset should be fully charged before flashing or installing a customer ROM. I assume this is because the calibration for the ...
7
votes
1answer
708 views

Disable low-battery warning, specifically on XOOM

I would like to disable the low-battery warning on my XOOM without rooting. It's a pretty obnoxious sound compared to other phones I have used. By rooting, I can replace ...
12
votes
3answers
12k views

How to know app name by UID

I have found that UID=10058 using battery much in "battery history" How can I know app name by UID=10058
3
votes
1answer
2k views

Is there any Android phone that can wake up for alarms even when the battery has died?

My old Nokia N95 used to wake up for alarms even when the battery had died. Is there any current Android smartphone that can do this?
6
votes
3answers
1k views

Why do some Android devices (Samsung) show battery charge in steps of 10% whereas others (HTC) show more accurate percentage?

Why is it that Samsung devices (and perhaps others) show the battery charge remaining in multiples of 10% whereas other devices are able to show a more accurate percentage like 96% etc? Is this a ...
6
votes
4answers
354 views

Is the Nexus One battery charged when connected to a PC via USB?

Do you happen to know whether the Nexus One's battery is charged while being connected via the USB cable to a PC? If so, is this standard behavior for all Android devices that have a USB port?
3
votes
1answer
154 views

Good source for genuine batteries

I'm looking to source a genuine original size battery for my HTC Desire. I'd rather not fork out the RRP of ~£35 but lots of the cheaper ones have bad reviews. Will anything much less than the RRP be ...
14
votes
3answers
24k views

How do I turn off the cellular radio without disabling bluetooth?

I have an old Motorola Droid that is no longer subscribed on any Verizon service. I still use it for things like web browsing, ebooks, and along with some wireless stereo headphones, music. I've ...
1
vote
1answer
371 views

Why do Seidio's battery charging instructions say to leave it charging after it's full?

I have an HTC Droid Incredible. I bought the "Seidio Innocell 1750 mAh Battery for HTC Droid Eris/Droid Incredible", and the instructions that come with it say... In order to obtain the full ...
7
votes
3answers
400 views

Other than the external LED indicator, how can I be notified that my phone is done charging?

I'm wondering if there is a setting that I am missing that allows an Android phone to produce an audio notification (or even vibrate) once charging is complete. As is stands, whenever charging is ...
3
votes
1answer
742 views

Will fastboot not proceed with flashing if battery level is below certain percentage?

I'm trying to re-install Clockwork recovery mod (tl;dr: Android 2.3.1+ will reinstall stock recovery on every boot if it's not present). I had installed it successfully yesterday, but today it does ...
6
votes
1answer
299 views

Do I have to calibrate my battery after a reinstall?

When I installed Cyanogen Mod 7, I 'accidently' clicked 'Wipe Battery Status' even though my battery wasn't fully charged. Now I have no idea what this exactly does (even more reason I shouldn't have ...
7
votes
1answer
531 views

Is it normal for Android System to be the top battery user?

Over the past couple of days, the battery usage of my new phone has been as follows: 34% - Android System 28% - Cell Standby 21% - Phone idle 10% - Display 03% - Google Goggles 02% - ...
2
votes
1answer
437 views

Will the Samsung Fascinate work without a battery?

Can I use a Samsung Fascinate with no battery powered only by the power cable? (I'm assuming this is a handset specific question, but let me know if I'm wrong and the answer applies to all Android ...
4
votes
4answers
211 views

Disable updates when at work?

How can I disable various social apps from updating while I'm at work (where I work with my laptop anyway)? The main point is conserving battery. (I have HTC Desire HD) I don't want to turn off wifi ...
2
votes
3answers
529 views

How can I see the full charge capacity of my battery?

I have a Samsung Galaxy S running Android 2.2. Is there any way for me to see the full charge capacity of the phone's battery, so that I can compare it to the spec? What I have in mind is something ...
4
votes
1answer
531 views

Can't get past the pulsating boot screen after complete battery drain

My phone ran out of charge this morning after I made a couple of phone calls in bed. I was too lazy to get out of bed to plug it in. When I plugged it in later, and pushed the power button, the phone ...
1
vote
2answers
8k views

My phone keeps slowing down and burning battery. How can I debug performance and cpu consumption? (DHD 2.2)

I know there are already a lot of threads about suggestions on how to improve performance and, strongly related, save battery life on your android. I also have tried most of the tools to diagnose ...
15
votes
1answer
4k views

Charging over USB can be harmful?

Considering that charging over USB can take around 5 hours (to only 1-2 hours it would take from the wall mounted plug), can it be harmful for the smartphone battery if it's always charged from USB?
25
votes
6answers
22k views

Why is charging from computer using USB slower than using an outlet?

And what is roughly the ratio of the charging speed in USB vs charger? My phone is Samsung Galaxy S, if that matters.
0
votes
1answer
958 views

LG-Ally won't charge

My LG Ally is out of battery and won't charge at all. I know the outlet is working. It's charged in the past just fine.. I gave it like 30 minutes plugged in, and power wouldn't do anything. No ...
6
votes
2answers
2k views

Can I leave it plugged in for charge all the time? -Samsung Galaxy 3 I5801

In short my question is - What is the battery level at which it starts charging again Samsung Galaxy 3 I5801 device when kept plugged in for charge all the time? If you want to know background and ...
14
votes
2answers
3k views

When should I start charging my Lithium battery?

The comments in this question say that I shouldn't wait until low battery charge level before I charge, because that reduces battery life (this is contrary to my understanding before that the faster ...
7
votes
3answers
5k views

How can I take a photo when battery <20%?

How can I take photo when battery level is less than 20%? My Samsung Galaxy S always says "battery low" and then closes the camera application when I try to. Is there a way to get around this? Or is ...
6
votes
2answers
568 views

Is there a black list of applications that drain battery fast?

Many people complain about some applications draining batteries fast because of bugs or misconfiguration. Is there a black list of such applications that are not energy-friendly?
4
votes
2answers
239 views

Can the Droid Eris be charged on a PowerPlate Wireless Induction Charging Base?

Can the Droid Eris be charged on a PowerPlate Wireless Induction Charging Base?
7
votes
1answer
391 views

“Battery use” information screen not reporting apps

I've got a Samsung Galaxy S (international version) that I've just upgraded to Android 2.2 (Froyo) and now the battery usage page in settings (Settings => About phone => Battery use) only ever reports ...
10
votes
1answer
778 views

What does “Battery Use” tell and how is it implemented?

I have several questions about "Settings -> About Phone -> Battery Use", mainly because I don't understand what exactly those items mean. (1) Does "Cell standby" indicate the energy used by the radio ...
23
votes
3answers
18k views

Do I have to charge my phone before I use it the first time?

When I got my last phone, a SE k850i, I was recommended to charge it fully once before I even turned it on. Does this apply today as well, for my coming HTC Desire HD? Why was I recommended to do so ...
59
votes
11answers
66k views

How to disable battery full notification sound?

When battery has been charged full, my Galaxy S phone gives the same notification sound that is used when I receive SMS. Is there a way to disable the sound without also disabling sound from SMS? It ...
11
votes
5answers
588 views

Wearing down battery as fast as possible

I am trying an experiment and I need to wear down my Droid Incredible's battery as fast as possible. What apps are known battery hogs? I've already beaten Angry Birds so that one is off the list for ...
7
votes
3answers
2k views

How can I tell at what rate my battery is charging?

I've been told that different charging sources charge my phone at different rates, and have been told that some car chargers act at a normal USB rate instead of a rate closer to an AC outlet. When I ...
8
votes
5answers
11k views

How to show the battery percentage remaining in numbers?

At the moment Android 2.2 has a pretty incomprehensible icon of a battery that shows remaining strength. Is there a way to switch that to a numeric display (like is available on the iPhone)?
6
votes
5answers
13k views

Is there an app that will drain my battery?

Are there any apps that will specifically help to drain a battery down quickly? The scenario I would want to have this is if I want to quickly drain the battery so I can charge it fully again. Some ...
3
votes
2answers
543 views

3G Radio Always on When Screen On?

According to JuicePlotter, my HTC Evo's 3G radio is always on when the screen is on -- even when doing absolutely nothing. I tested this by turning the brightness down to 1 and opening the settings ...
19
votes
4answers
2k views

What causes battery to drain faster than it can charge?

I have a Moto DROID (v1). On a trip from Tyler, TX to DFW airport I had my phone in the car dock and charging. I was using Navigation for directions to the airport and also had Listen running to ...
11
votes
4answers
2k views

Will any Micro USB cable work to charge my Incredible?

The plug sure looks like any old micro USB plug. Will another cable (like the one from my digital camera) work to charge the battery, or do I need one specifically designed for my phone?
4
votes
1answer
6k views

Cell standby and Phone idle

On the battery use screen, what are the differences between Cell standby and Phone idle items?
4
votes
3answers
246 views

Why does my Milestone Droid erroneously report a drained battery once every few weeks?

Every so often, my phone (Motorola Milestone, firmware 2.1-update1) decides that the battery is almost drained and that I have to turn the phone off. This may happen just a few hours after charging ...
4
votes
8answers
320 views

Leaving wi-fi on all the time

Does it highly affect the stand-by time to leave wi-fi open all the time on my phone?
4
votes
5answers
879 views

power consumption by application?

Since cellphone application software requires extra power for processing. Is there any application software that indicate power consumption by particular application?