Questions about Battery life (how long each charge last) or/and Battery Durability (how long until it needs to be replaced) should use this tag.

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4
votes
3answers
213 views

What is the standard voltage and current levels for an android battery?

I am using Micromax Canvas Nitro A310; recently, I bought a new USB cable and it seems its not doing the job as required. My phone is not getting charged as it was before. Either it takes too long ...
4
votes
2answers
840 views

Is there a way to see which apps are using GCM?

I'm interested to know how many of the apps I have installed are using GCM. Is there a way to find out?
4
votes
4answers
27k views

Does Cyanogenmod reduce battery life?

My galaxy mini was running GB 2.3.6. I recently rooted my phone and installed CM 7.2. Now it looks like my battery is getting drained a little quicker than before. From what I have heard CM increases ...
4
votes
2answers
29k 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 ...
4
votes
2answers
272 views

Does Gingerbread use extra battery power to make calls when the phone has poor signal?

Since I got this phone (Galaxy S, originally on Eclair, then Froyo) and switched network provider, I've had major problems with the signal at home, and call quality as a result. Following the upgrade ...
4
votes
1answer
70 views

How to see what applications do some actions when I power on my phone?

I believe there's some set of “hooks”, which get executed when I power on the phone. I want to see it to figure out the reason why my phone sometimes doesn't wake up properly (wakes with black ...
4
votes
1answer
594 views

Don't charge to 100% when always-on wall-plugged-in

I want to use a Google Nexus phone for an always-on wall-plugged-in WiFi tethering access station. It occurred to me that if I just do it like this, then I'm risking ruining the battery within a ...
4
votes
1answer
168 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
5k views

Get rid of 'battery-low' popup after some delay?

I'm using an Android phone (a Motorola Defy+ running CM9) with OsmAnd as a map solution mounted on my motorcycle (it just shows the map and a gpx-track as a driving hint). It's not connected to a ...
4
votes
1answer
5k views

Battery life cut in half recently - DrReadUsbStatus issue?

My regular uptime on Samsung Galaxy S2 was around 6 days. For the last couple of weeks it is down to less than 3 days. The change was instant, but I was hoping it would come back - it did not. Running ...
4
votes
1answer
1k views

Is there any reason not lock the CPU frequency to the minimum while the screen is off?

To save battery, I have created a "screen off" profile with SetCPU that locks the CPU frequency to the minimum while the screen is turned off. Could this have any negative side effects on apps that ...
4
votes
1answer
291 views

Battery level on Asus eee pad Transformer with dock

I'm wondering if anybody knows how the battery level is measured on the Transformer when the dock is connected. I fully charged the other day, and after few hours of use the battery level was still ...
4
votes
1answer
2k views

Can anyone reccomend a 2g / 3g switching widget?

I've just got my new HTC Desire HD and I want to switch 3G on and off as required. I used to do this on my old HTC magic and got quite good battery life compared to some friends with the same phone. ...
4
votes
1answer
3k views

Which uses more battery? 4G lte internet or Wi-Fi?

I usually am within range of my Wi-Fi hotspot, and am using a Samsung Galaxy Note II. I've always wanted to know whether I'd have better battery-life if I was to turn off Wi-Fi? I have unlimited 4G ...
4
votes
2answers
13k views

nlpwakelock and “Use wireless networks” option

Under "Location services" there is a "Use wireless networks" setting - whenever the setting is on, I get constant "nlpwakelocks" and the battery drains a lot faster. However, I see that this was ...
4
votes
3answers
230 views

When did my phone power off due to low battery? Is the information recorded somewhere?

I'd like to know when my Android phone powered down due to low battery. Is there a log or way to see this? I am running a new program that makes use of BlueTooth and I suspect that's the problem. I ...
4
votes
1answer
2k views

Auto sync only when connected to a specific wifi network

I am getting rather low battery life when using auto-sync on 3G. I have wifi in college and at home, so I'm looking for a way to enable auto sync only when connected to those 2 specific wifi networks. ...
4
votes
2answers
396 views

Suspend a phone

I was wondering if I could suspend my phone. Let's say I'm running out of battery and I'm also expecting an important call in a few hours time. Instead of shutting down the phone and starting up ...
4
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 ...
4
votes
1answer
151 views

“Phone” item using 10-15% of Battery Life

I've attempted to search for other questions answering this, but keyword ambiguity is working against me. On my Galaxy Nexus, my battery drains rather quickly. Very frequently, when viewing the ...
3
votes
3answers
255 views

What is my phone doing at 1 o'clock in the morning?

I have recently installed JuiceDefender (JD) and along with it JuicePlotter (JP). JP gives me a nice graph about my energy consumption over time. I noticed that around 1 A.M. my phone uses up more ...
3
votes
3answers
237 views

Is it possible, that old smartphone becomes slow simply because it is old?

I have 3.5 half year old Samsung / Google Galaxy Nexus i9250. The phone has become so slow after that time, that it is simply being unusable. Launching any application, as simple as Gmail or Calendar ...
3
votes
1answer
661 views

Minimized Apps: Do they consume more battery?

If I keep one or more app minimized in my Android Phone (Samsung Galaxy Y) will my mobile's battery will be consumed faster than if I had not minimized any application at all?
3
votes
1answer
4k views

Power Saving Option in Samsung Galaxy S3

I see there is a Power Saving switch in the Galaxy S3. What makes the Galaxy S3 save power when it is turned on? Is there a difference this and using JuiceDefender? Can using JuiceDefender and ...
3
votes
1answer
342 views

What way of controlling volume is more battery efficient?

I have a headset with it's own volume control, and I can also control the volume of the music through the android's volume control keys. But which way of controlling is more battery efficient? ...
3
votes
2answers
1k views

How To Prevent Uploading From Interrupting When Screen Is Off?

When screen goes off, uploads get interrupted especially YouTube uploads and everytime i have to resume phone to continue uploads. The problem is that in case of YouTube, videos stutter which i assume ...
3
votes
1answer
9k views

Should I keep my Android tablets' power off or leave them on standby mode?

Should I keep my Android tablets power off or leave them on standby mode? Which option is better? I have two tablets: Allwinner A10 single core 10 inch (old one) and Allwinner A31 quad core 9.7 inch ...
3
votes
2answers
3k views

What can I do to increase battery life on my Android tablet?

Tablets have different usage profiles than phones. So many of the "Phone" suggestions don't apply. So, what can I do to get better battery life on my Android Tablet. (TechPad 7" Tablet from ...
3
votes
3answers
10k views

Displaying Bluetooth gadget's battery status on the phone

I have a Bluetooth headset (BlueBuds X) which uses a battery. I want to know its battery status directly from the phone. I've looked everywhere and I cannot find a solution that isn't a scam. Is it ...
3
votes
1answer
2k views

Can rooting be the cause of battery drainage?

Its been three weeks I have rooted my phone. I have installed a lot of apps using link2sd on external sd card. I have noticed that since the rooting, the battery goes down very fast. 80% of charge ...
3
votes
1answer
11k views

How can I boot my Nexus S with a broken power button? Can only boot to “Do not turn off target”

My Nexus S power button has stopped working and Samsung will not honor the warranty. The farthest I've gotten is to the Downloading screen with the yellow work ahead sign, that says "Do not turn off ...
3
votes
1answer
101 views

Why are individual apps not listed in my battery usage statistics?

I'm using an Asus Transformer TF300 running Ice Cream Sandwich. When I check Settings->Battery the only things listed are Screen, Tablet Idle and Wifi. Why aren't apps that I use being shown in ...
3
votes
1answer
1k views

Improve Android battery life by lowering CPU freq

I would like to know if it could be possible to use adb (Android Debug Bridge) to tell the phone to lower its CPU max freq. I'd like to use less battery if possible, and in my use case I don't mind ...
3
votes
1answer
2k views

Android 6.0 drains my Nexus 5 battery within an hour

So. This morning I received the OTA update for Android 6.0 on my Nexus 5. Previously had no problems with battery usage, but after installing the update my battery is drained within an hour, without ...
3
votes
2answers
7k views

Galaxy S3 cell standby is eating my battery

My battery on my new S3 seems to be being eaten up by the cell standby using more than 50%. I appear to get a decent signal on the phone. Does anyone have any idea why this figure would be so high?
3
votes
1answer
87 views

Can anyone explain to me what the % really refers to in the Android system, battery usage?

I am wondering what the different percentages really refer to in the battery usage section. I mean...in total I see more than a 100%. So it is easy to presume that it doest mean a certain percent out ...
3
votes
1answer
153 views

Why did my battery usage on 3G grow with the Android 2.3 update?

There were different nice features followed by the official update of Xperia X10 to Android 2.3 like the sound stuttering, but the most annoying is the following. I live in the Netherlands and here ...
3
votes
3answers
363 views

Phone kept awake for half an hour after arriving home

My Moto X (2014) running Lollipop 5.0.1 sometimes starts chewing through battery upon arriving home after being away (or, possibly, getting back on a wi-fi connection is the trigger?). It does this ...
3
votes
2answers
45k views

Does charging a phone with another phone's charger affect it in any way? [duplicate]

I have a Samsung S4 and because its charger is short I charge it with a Samsung Wonder charger. I am afraid that it can damage the battery or something. Will it?
3
votes
1answer
3k views

How can I increase my Samsung Galaxy Tablet 10.1 battery life?

How can I increase my Samsung Galaxy Tablet 10.1 (Android) battery life? I am going to use my Samsung Galaxy Tablet 10.1 (with WIFI and/or 3G) for marketing purposes: It's going to play a movie non ...
3
votes
2answers
689 views

How can I return from power-saving mode in Android 2.3?

I'm using a Samsung Galaxy S II Epic (with Android version 2.3.6 installed), and whenever my phone reaches 10% battery life it prompts me to turn on power-saving mode (and I do). However, once my ...
3
votes
1answer
341 views

Is my battery faulty

I've had my HTC Desire (latest legit firmware) for 18 months or so, and I believe this problem has existed for a while but it getting worse. It might just be time for a new battery but in case ...
3
votes
3answers
431 views

How can I prevent the battery in my Nexus S from draining overnight?

I have a Google Nexus S and for the past 2-3 days whenever I go to sleep the battery drains completely overnight. I mean when I go to bed the charge on my phone is plus 90% but for the past 2 days ...
3
votes
1answer
648 views

Is there any known memory leak in Gingerbread 2.3.3 fixed by occasional reboot? Related to battery usage?

I notice that when I reboot my Samsung Captivate, it runs smoothly for about 2 or 3 days. After that, I notice that there is a lot more lag with various apps, and the launcher screen is more likely ...
3
votes
3answers
1k views

Battery usage problem in Android 2.3.6

Since the update to Gingerbread the battery of my phone has the half duration than with the 2.3.4 version. The "Battery Usage" in settings don't show anything abnormal. Anybody have the same ...
3
votes
1answer
394 views

HTC Evo - Can Wi-Fi Radio Sleep?

I've noticed that when actively downloading a lot of data, the Wi-Fi radio uses much less power than the 3G radio. However, when the phone is not being used much, the 3G radio will sleep but the ...
3
votes
3answers
568 views

Ways to improve battery life on Droid Incredible?

Out of the box, I noticed my Incredible has a lot of stuff running/turned on by default. Besides the basics of turning off WiFi, GPS, and BlueTooth when I'm not using them, are there more steps I can ...
3
votes
0answers
105 views

Why is a suspicious program draining my battery with GPS usage?

Phone : nexus 5 version 2013 Android version : 6.0 Kernel version : 3.4.0-g2aa165e Build number : MRA58N For the last few days, 10118 has been draining my phone's battery. It drains battery by ...
3
votes
1answer
352 views

Battery Drain from mysterious wake locks

I have an huge battery drain issue on my OnePlus One running Android 4.4.2 on stock ROM CM11s O5Q with FrancoKernel R35. I googled and searched so many times but couldn't find anything and I am really ...
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 ...