Battery life is important for mobile devices. Questions regarding battery life should use this tag.

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1
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2answers
19 views

Shorcut on desktop that enables packet data and 3G

In order to save battery (it works a lot!), 99% of the time I disable packet data and I use only 2G networks, because I don't want the phone to go on internet / use data. But sometimes I want to use ...
0
votes
0answers
11 views

Faulty battery status indication

I have a Huawei Honor U8860 with Android ICS. I use two Mugen Power batteries. I always use one battery until it's empty, then charge it to full while using the other battery. Recently Android battery ...
0
votes
1answer
18 views

Charging Nexus 5 to 100% [duplicate]

Is it wrong to fully charge your android phone in general to 100% will it hurt battery life? and is it also to drain your battery to below 20% will it also hurt the battery life?
0
votes
0answers
40 views
+50

Unexplicable battery draining on Galaxy Nexus

Okay, so first some details: Samsung Galaxy Nexus (GSM version) Stock rom (rooted) Brand new stock battery (1750mah) I started suffering from unexplainable battery draining a few months ago. And ...
0
votes
1answer
18 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 ...
-1
votes
0answers
14 views

how many hours i need to charge my brand new mobile phone? [duplicate]

i bought brand new Samsung Galaxy Note 3 Neo SM-N750, at this moment it has 42% battery remaining do i need to wait for the complete discharge ? how many hours i need to charge it for first time ? ...
0
votes
1answer
31 views

Battery drain when wifi is off

I turned off my wifi connection and noticed a heavy impact on my battery life. In a few hours without any usage, it dropped more than the whole day before. See the drop at end while wifi (WLAN) was ...
117
votes
20answers
63k views

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

What can I do to get better battery life on my Droid? Battery life seems awful. Less than 15 hours or so on normal usage.
4
votes
4answers
5k views

mm-qcamera-daemon causing massive battery drain

Recently, mm-qcamera-daemon has been causing massive battery drain on my Nexus 5, and making it become rather warm. At the same time, the camera appears to be locked, meaning opening the default ...
3
votes
2answers
5k views

msm_otg kernel wakelock preventing deep sleep

Ever since upgrading my stock Sprint Galaxy S3 to the official Jelly Bean release, my phone won't go in deep sleep at all, it's constantly at 384MHz. It's because of msm_otg kernel wakelock. Anyone ...
4
votes
1answer
3k 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 ...
61
votes
4answers
62k views

Battery Life and First Time Charging on Li-ion Batteries. Myth?

"Ok you bought a brand new mobile phone with brand new battery, after checking its working ok kindly switch it off and charge it fully (100%) then start using it. IT WILL INCREASE YOUR BATTERY LIFE.", ...
1
vote
1answer
17 views

How to measure the charge left in a dying battery?

This question is not relative to a specific phone model, even though I will cite my P1000. My P1000 is 3 years old, and it is often suddenly turning off (no shutdown sequence, just goes dead) out of ...
0
votes
1answer
16 views

Android: Default Battery Percentage Level for individual services to switch off

We all know Android OS switches off services one by one when the battery reaches critical level. But is there any fixed battery level to cut down individual services. For example, Bluetooth will be ...
2
votes
4answers
19k 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 ...
1
vote
1answer
530 views

Neo V with 4.0 ICS update — battery problem

My Sony Xperia Neo V battery performance has gone down very badly after upgrading to ICS. It mainly happens when I have my mobile data/internet turned on. How can I improve the battery performance?
1
vote
4answers
8k views

Battery drain on Galaxy Note-I after updating to Jelly Bean

I have Galaxy Note-I (N7000), and upgraded to Jelly Bean 4.1 today. The battery drains fast. Do we expect any update from Samsung on the battery drain issue, or do I need to downgrade to ICS?
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 ...
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
1answer
1k views

Sudden battery drain on Samsung Galaxy Ace 2x

I have a Samsung Galaxy Ace 2x that is not yet a year old. For the last 6 weeks, the battery has been draining very quickly, even though I have turned off everything that would cause this (GPS, WiFi, ...
0
votes
1answer
28 views

“Battery Usage” page irrelevant

I have been doing battle with the battery vampires, apparently similar to a lot of people on here. I have a Samsung Droid Charge (SCH-i510), and service with Verizon. I have noticed my battery life ...
2
votes
2answers
1k views

Google Services battery drain on Galaxy devices

Here are screenshots from my three Samsung Galaxy devices: Samsung Galaxy S3 Samsung Galaxy S4 Samsung Galaxy Note 10.1 2014 It seems, that in each case Google Play Services ("Usługi ...
0
votes
2answers
53 views

Battery-tracking app

I have a Galaxy SIII on Jellybean that's about a year old. I've never had any battery issues with it. The last three days, it's been at 80% when I go to bed at night, and completely dead in the ...
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 ...
0
votes
1answer
75 views

How to make rooted android phone faster and avoid battery drain

I have rooted by Samsung S dous s7562 (645 RAM single core 1ghz processor)phone using Kingo Android root desktop App. I decided to root my phone as it was very slow . I have already done the ...
0
votes
0answers
51 views

Moto G battery drain by Google search

I have a Moto G and I have the Moto Assist enabled for sleep mode. Every morning I wake up, I see my phone has been kept in deep sleep as long as Moto Assist was enabled. After that time, even though ...
0
votes
0answers
25 views

Battery drain RATE alert?

i've used multiple generations of Nexus devices, some more stable some less. It seems like there is always some combination of hardware, system image and installed app set that creates a situation ...
0
votes
0answers
18 views

How can I make my Android phone request (negotiate for) more charge from (with) the host PC?

Hello there is a wonderful Q&A here about detecting how much charge your phone is drawing from the computer host: How do you check how much power a USB port can deliver? In my particular case, my ...
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 ...
1
vote
0answers
42 views

Is slow charging bad for the battery?

I know that charging the battery too fast can overheat the battery and shorten battery life. But is charging it slowly, e.g. from a USB 2.0 cable plugged to a laptop, also harmful for the battery? I ...
0
votes
0answers
14 views

screen problem issue in Nexus 7

Always,my screen takes up most charge in my Nexus 7. Usually 40-70% charge. I lowered my screen timeout to 15 seconds the least possible. I also lowered my brightness to the least possible. What else ...
0
votes
1answer
376 views

Samsung galaxy note 2 android 4.3 problems

Is there a solution for the battery drain problem that the note 2 suffers after the 4.3 update? In my case the drain is most noticeable when the wifi is on. When its off battery lasts a good while ...
0
votes
1answer
59 views

What is the effect of “power saving mode”?

Android OS from ICS and above has a "power saver mode" by default (I own a samsung) What does this mode actually do? If it reduces clock speed of cpu, then by how much? How does it attain this power ...
2
votes
1answer
3k views

Turn off Wi-Fi Power Saving?

Is there a way to turn off wi-fi power saving mode on Android, i.e. have the wi-fi radio stay on at all times? I'd rather have a stable, low-latency wi-fi connection and slightly less battery life ...
0
votes
0answers
56 views

How much “Keep awake” is normal for Google Services?

How much, in general, of "Keep awake", and "Wakeups" is normal for Google Services? When should I be alerted that something is wrong? For example, would 2 hours of "Keep awake" be normal for ...
3
votes
3answers
406 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 ...
2
votes
0answers
45 views

Build android from source. Battery power incorrect

I added a kernel module to the msm flo kernel. I built android JB from source for my Nexus 7(flo). I flashed the device with the built OS. My battery power seems to be stuck at 100% remaining. I ...
0
votes
1answer
1k views

Tablet idle issue in New Nexus 7 (2013)

Lately my new nexus 7 table's battery has been draining incredibly fast during idle. I noticed that the "tablet idle" item in the battery life menu is the highest out of all of them (sometimes up to ...
2
votes
2answers
148 views

Brightness and battery use

When I turn down the brightness of the screen on a Samsung Galaxy Mega am I lowering power consumption or increasing the opacity of the screen?
2
votes
2answers
71 views

What is trying to connect to the network?

When I'm not actively using the network, I usually turn off Wifi, Bluetooth, and Data. Since upgrading from Android 4.3 (stock) to 4.4 (OTA update from my carrier) I notice two things: Battery life ...
7
votes
3answers
3k views

Do battery saver apps really work? Is it possible to save battery programmatically?

There are numerous apps in the Google Play store claiming to double or triple the battery life. Is it just a myth? Or can they really? If they really do save some power, why doesn't Android do it by ...
13
votes
5answers
14k 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 ...
0
votes
1answer
55 views

Notification led's generic consumption?

Okay I know that all phones got different hardware, and that leads uses just a little power. But. What if I set my led notifcation speed to high (like the light will pulse faster)? How much would ...
0
votes
2answers
41 views

is more battery-dispendious shutting down or leave 3g on?

I know that many apps (like messaging apps eg whatsapp or facebook) every time like 30 seconds, ask the server for push notifications. I know that 3g has many state, when downloading data the consume ...
0
votes
1answer
164 views

Why is Youtube draining the battery and what could we do?

A friend of mine just asked me a nice question: His (stock) Samsung Galaxy S4's Youtube is draining his battery. He said, that he hasn't been in the app today, and this morning he had the phone ...
0
votes
1answer
85 views

Droid Mini charging and battery problem

My Droid mini have a strange problem, when I am charging the phone with some USB cables it charges very slowly and phone battery discharging very fast. but when I charge with original cable it works ...
0
votes
2answers
89 views

Why newer android versions drain the battery faster?

I've got an Android phone whose stock Android version is 2.1. I've tried several times to install some custom ROMs (mostly Cyanogenmod based) with Android 2.2 and 2.3. The full charged battery lasts: ...
1
vote
1answer
33 views

Will disabling LTE extend my battery life even if I'm not using it?

I was just wondering, if disabling LTE will improve my battery life even if I'm never using it (there's no LTE in my country).
0
votes
5answers
222 views

Is it normal for Wi-Fi to always be on?

I have a Nexus 4 running CyanogenMod 10.2.1.-mako. While trying to figure out why my battery life seems to be shorter than usual, I have noticed that my Wi-Fi is constantly on. Shouldn't the Wi-Fi ...
0
votes
1answer
237 views

Is it feasible install 3000 mAh battery to MMX A89 mobile?

Device : MMX A89 OS : ICS 4.0.4 Battery : 1400 mAh Is it feasible install 3000 mAh battery to MMX A89 mobile? As internet is ON on mobile so it's getting drain within 6 to 8 hours and I am not ...