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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2
votes
1answer
533 views

How do I set Wi-Fi sleep policy to Never on Froyo 2.2 Droid X without Advanced Wi-Fi Settings menu?

I've encountered the following instructions on a forum about battery drain Set Wi-Fi sleep to Never in the Settings > Wireless & Networks > Wi-Fi Settings > Advanced >Wi-Fi Sleep ...
3
votes
1answer
317 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 ...
2
votes
1answer
4k 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 ...
2
votes
3answers
4k views

Samsung Galaxy S2 on Sprint sudden Drop in Battery Life

Since I got this device in mid November to now, I have had great battery life usually lasting almost two full days and never having a problem for one day unless I'd been using it excessively. Suddenly ...
-1
votes
1answer
2k views

How is Anker battery for Android phones?

I've heard people talking about Anker on big forums about Anker battery, basically cell phone batteries and external batteries, and it seems people speak highly about it. So have you have any idea ...
15
votes
3answers
52k views

How can I find out what causes “Android OS” to consume battery?

The issue is that I see a high percentage on the "Android OS" item in the Battery Usage, and I want to find out what is causing it. But let me say that I'm interested in diagnostics techniques and ...
4
votes
1answer
272 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 ...
2
votes
3answers
214 views

Settings -> About phone -> Battery use bug?

When I open the "Battery use" screen it says that the phone is on battery for 14663d 4h 34m 53s, which is clearly wrong. The graph shows a linearly descending line. What is the problem? Why does the ...
20
votes
4answers
9k views

What is USB debugging? Can I keep it ON forever?

Sometimes I need to transfer some music from my PC to my Galaxy S2 and must always activate USB debugging. Then I think, can I keep it ON forever? I mean, Keep it ON for ever can give me a problem ...
3
votes
3answers
420 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 ...
21
votes
4answers
16k views

How can I avoid the battery charging when connected via USB?

I'm using my Samsung Galaxy S2 for development so I regularly plug it while it's not fully charged, and my phone starts charging over USB. I think this (charging while in use) can affect battery life ...
2
votes
2answers
497 views

Does CM7.1 give a “low battery” alert?

I've been using CyanogenMod 7.1 since it became stable, and one feature I miss is the Low Battery alert. I've often come home from work, thrown my phone on the desk and forgotten to plug it in. When I ...
8
votes
2answers
228 views

Avoiding power drain

I just got a samsung Indulge this weekend and I’ve noticed that the biggest power drain on the battery is from the display. I’m blind, so I really don’t need to be able to see it at all. Is there a ...
3
votes
1answer
598 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 ...
4
votes
0answers
617 views

Battery life in Samsung Galaxy 3

I recently updated my Samsung Galaxy 3 to Android 2.2 . After the update my fully charged battery dies in just 3 hours(without any use) and around 1 hour if I use it (talking,browsing etc). I am using ...
6
votes
2answers
2k views

Does encrypting the Xoom tablet use battery faster?

I recently decided to encrypt my Xoom tablet. The process went smoothly (full power, plugged in the whole time, took about an hour) but since the encryption, it seems like my battery life has ...
1
vote
1answer
449 views

Battery life in dual-boot HTC HD2

I own a dual-booting HTC-HD2 with MIUI on SD card. I already knew, from tutorials, that in order to maximize battery life I should first-boot Android only with 100% of charge. This is currently ...
3
votes
4answers
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 ...
2
votes
1answer
847 views

What is preventing my Android phone from going to sleep? It is eating through the battery quickly

My phone is the Motorola Droid 1, rooted and modded with CyanogenMod 7. This problem did not occur before I modded it. When I check the battery stats, the awake bar is always solid, so something is ...
3
votes
1answer
152 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 ...
11
votes
6answers
6k views

Power saving tips for Galaxy S2 that don't involve turning it into a dumbphone

My Galaxy S2 has always shown not more than 8 hours of battery life. This is with the stock ROM, as well as the recent 2.3.5 update and a rooted kernel. All the battery saving tips I've seen ...
6
votes
1answer
789 views

How much does Android use Wi-Fi for network discovery when not connected?

When I have Wi-Fi turned on, but not connected to any network, how much does Android use the Wi-Fi function? I'm asking this because apparently Wi-Fi activity uses considerable* amounts of battery. ...
5
votes
1answer
801 views

Can I change the level for “Connect your charger”?

My phone HTC Desire on cyanogen mod 7 shuts it down if the battery level is 18%. Can I change this level to something lower?
5
votes
1answer
854 views

Does a battery with more capacity last proportionally longer?

I recently bought a Galaxy S2 which came with a 1650mAh battery and in a near future the manufacturer will be offering another one with a 2000mAh. My question is: will it last 21% more than the ...
0
votes
1answer
712 views

Why is my battery life fluctuating?

I installed CM7 on my LG P500, and ever since the battery sometimes lasts 30 hours, sometimes for 8 hours, under the same usage and same power state (conservative). How can I fix this?
5
votes
1answer
633 views

How much battery does using live wallpapers drain?

I know they are unnecessary, but they look so cool!
6
votes
1answer
1k views

Is there anything that can show exactly what has awaken my phone?

Recently I had some issues with my phones battery getting drained in 8-10 hours, even though the screen was active for less than 1 hour and wifi/bluetooth/gps was off. My first thought was to check ...
1
vote
1answer
388 views

How do you change the screen background on Nexus S?

Just bought a Samsung Nexus S. No manual came with it. Apparently the moving default screensaver eats up heaps of battery life and I am not getting much battery life out of this new phone and I am ...
1
vote
3answers
356 views

How to keep my battery life? [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android phone? Today I woke up after a night without charging my phone (galaxy s2). and he's dead, last night he was almost ...
1
vote
1answer
385 views

Number of Wi-Fi channels to be used?

Under advanced wifi settings one can change number of Wi-Fi channels to be used (11, 13, 14). Does anyone have a clue on how does this property affect battery drain? I know it should be configured ...
4
votes
2answers
3k 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
497 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
243 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 ...
6
votes
2answers
356 views

Droid 2 Global - Will switching from Global to CDMA-only improve battery life?

I recently got a DROID 2 Global with Verizon and am looking to maximize my battery life. I am aware of the need to dim my display, disable Wi-Fi and GPS when not using it, increase sync intervals, and ...
1
vote
1answer
411 views

Connecting to internet using Wi-fi portable hotspot or bluetooth? which one is more battery saving?

I have EDGE internet connection in my Samsung Europa I5500L (Froyo 2.2). I can connect to the Internet from my laptop using both bluetooth or making a wifi hotspot from the device using that EDGE ...
5
votes
1answer
165 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 ...
4
votes
2answers
258 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 ...
10
votes
4answers
702 views

Gingerbread has drastically reduced my battery life

I have a Nexus One, and since upgrading to 2.3.3, my phone lasts several hours less compared to 2.2.x. I've swapped out to a new battery, which didn't make a difference. In about 14 hours (of nothing ...
1
vote
2answers
3k views

HTC Thunderbolt: Why do I have serious text messaging and battery problems?

I just bought a Verizon HTC Thunderbolt Android phone. My battery lasts just 3 or 4 hours... the phone has to basically be plugged all the time. Any suggestions on how to improve this situation? Also, ...
5
votes
1answer
279 views

Does APNdroid eat battery?

Someone suggested that APNdroid will cause your battery to drain because your phone is continually attempting to connect to the disabled APN. Makes sense, but I wonder if there's something I'm ...
1
vote
0answers
264 views

Android 2.1 - MyTouch Slide 3G - Tips to Fixing Slow Phone & Poor Battery Life [duplicate]

Possible Duplicate: What can I do to increase battery life on my Android phone? What are the best applications or best practices for fixing slow operating phones and poor battery life on ...
7
votes
1answer
586 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% - ...
7
votes
5answers
807 views

Enabling GPS flag on android preferences: what is the battery impact?

Even if there are many questions regarding Android and GPS my doubt is really specific to the user level location settings. Supposing I've enabled the GPS settings, say from the Power Control widget, ...
21
votes
10answers
16k views

How does power usage for data over WiFi compare to data over 3G? (Ignore LTE for now)

If you have unlimited data over 3G so that cost is no option, which is more power efficient? Using the WiFi or 3G connection for data usage? Extending battery life being the goal
2
votes
2answers
9k 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 ...
2
votes
1answer
964 views

Why does my EVO Android phone screen keep turning on?

I have an HTC EVO and I can be sitting around doing nothing, when all of a sudden the screen comes on and stays on. I try to turn it off, but it keeps turning back on - sometimes after a second, ...
39
votes
4answers
18k views

Do bright wallpapers spend more battery than dark ones?

I started wondering about this when I realized most websites I visit have white backgrounds, and I know that the screen is usually responsible for most of the battery usage. Since I can't change the ...
2
votes
1answer
417 views

Locale powersave plugin & Power Control widget

I use Locale app with powersave plugin. 3G is usually switched off except during scheduled syncing to save power. There are occassional situations when I would like to use 3G and I would like switch ...
8
votes
2answers
1k views

Power draw from GPS - Does granularity affect amount of power drawn?

We all know that GPS draws a considerable amount of battery power. Does anyone know of any studies that test the "granularity" of a GPS signal with how much battery is consumed? I'm not talking ...
5
votes
2answers
2k views

How to optimize energy consumption during GPS tracking?

Very often I use my phone and the app MyTracks or GPSTrackerLite to track my hiking/biking tours. This really works great and I'm thrilledy by the lot of possibilities in combination with google ...