Database Users

Battery Life Guide - Worth a read if you are having issues.

Ive spent the last few days fiddling and testing stuff to increase battery life. Here is what i have learnt...
(Im running R2BA026)
Firstly, personally i do not want to lose any functionality/performance in order to gain battery life. I think that if you are going to spend the money to get a phone with awesome hardware it should be able to run at full whack.
This guide will not be useful to all, but hopefully it will be handy to those in my situation.
This is a guide for what i have found to be the best compromise between battery life and user experience, with the emphasis being on user experience.
My specific goals are:
- I do not want to lose any performance i.e cause any slowdown/choppiness.
- I am only looking for a 24h battery life as i can charge every night.
- I want to be able to use my phone without worrying about battery. Specifically I never want to think "i shouldnt do that it might run down my battery". I should be able to use all the features on my phone without questioning if i can afford to.
-=-
In my experience using a task killer resulted in only minimal gains to battery life but it meant that opening up apps could be a lot slower and apps could be choppy just after opening them.
Additionally the idea of setCPU is a good one however when coming out of sleep or opening an app it takes a little while to get back up to speed. This also causes choppiness. Personally I find lag/choppiness a real pet peeve, it irritates me alot, so I do not use setCPU either. It is true that with careful set up the lag can be minimised but then the battery life gains are also minimal, so I choose to keep full performance and dispense with setCPU. Bear in mind that the hardware platform is already very efficient and well optimised so a software solution will pretty much be a straight trade of performance for battery life.
-=-
With those two common options out of the way, what else can be done to save juice?
Well generally the biggest consumer of energy is the screen. The simplest option is just to turn it down to minimum brightness, but in my opinion that is not a good solution, its too nice a screen to have dimmed all the time. Thankfully the auto-brightness does a pretty good job of keeping the back light at a good level. It can be a bit disconcerting if you enable it when using full brightness as the drop can seem somewhat dramatic but don't let that put you off, give at 1/2 a day or so and you wont even notice.
Other easy but important things you can do are turning the screen timeout to minimum and always turning off the screen (power button) as soon as you are finished. They are tiny changes but really do make a big difference.
-=-
Onto wifi...
I think there may be a bug with the firmware because if I disable wifi I get a HUGE increase in battery life when Im at home. I have good 3g coverage here and a 3GB allowance so I only need to turn on wifi when Im browsing the web or market, seeing as it takes seconds with the widget this option suits me fine.
I suspect that when the phone is connected to wifi it doesn't sleep properly so drains very fast.
Only turning on wifi when i want it made by far the biggest difference to me, and as it doesn't affect my user experience in any appreciable way I am happy to do it.
I think its a good idea to mention app/widget updates and refreshes here, personally i have all my widgets and apps set to refresh only once a day, that suits me fine because I can refresh them all manually very easily if I want to to be absolutely up to date and I'm not a twitter or facebook addict Most of my widgets are news/article based so once a day is perfect.
-=-
GPS, again this is rather obvious, if you don't use it, turn it off. Personally i use latitude so I have it turned on all the time. Android seems very good about only using it when it is needed and the phone seems to get a fix very quickly so in reality it doesn't spend much of the day being active.
Same goes for bluetooth, although I don't use it so it stays off.
-=-
Nothing i have said here is particularly revelatory mostly common sense but I have always had battery issues often with the battery lasting ~12 hours before asking to be charged.
Updating to 026 made a big difference and following these rules means my battery drains on average 2-2.5% an hour under normal use.
Normal use for me:
-Wifi Off
-GPS on (With latitude widget)
-Gtalk always running
-3 news widgets + timescape
-frequent texting
-moderate calls
-frequent fiddling
The phone is very very snappy, everything apart from timescape opens as near to instant as makes no odds, the phone is a pleasure to use. My battery life has comfortably doubled without the use of any apps or any loss of performance.
Mission Accomplished

Thanks
Cheers for that. Very interesting .
I definitely agree about the task killer apps, the OS does a perfect job at running itself!
One question, Am i correct in presuming you have 3g always running? Network mode set to GSM/WCDMA preferred? Ive been afraid to do this as i have it in my head that 3g eats up my battery for fun! I'll have to try it out.
Thanks again!

I bought an extended battery for my X10 the sloping sides stop it looking like a brick. The G1 always looked like a brick with an extended battery but the X10 sloping sides do serve a purpose.

helliewm said:
I bought an extended battery for my X10 the sloping sides stop it looking like a brick. The G1 always looked like a brick with an extended battery but the X10 sloping sides do serve a purpose.
Click to expand...
Click to collapse
I prefer this:
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bjohnny85 said:
Cheers for that. Very interesting .
I definitely agree about the task killer apps, the OS does a perfect job at running itself!
One question, Am i correct in presuming you have 3g always running? Network mode set to GSM/WCDMA preferred? Ive been afraid to do this as i have it in my head that 3g eats up my battery for fun! I'll have to try it out.
Thanks again!
Click to expand...
Click to collapse
Yep, thats correct With the 3g on it seems to stay in 2g when sleeping then switch to 3g when you wake it, you can see the change in the status bar about a second after waking. Pure speculation though ...
Well, let us know how you get on with 3g active all the time
helliewm said:
I bought an extended battery for my X10 the sloping sides stop it looking like a brick. The G1 always looked like a brick with an extended battery but the X10 sloping sides do serve a purpose.
Click to expand...
Click to collapse
I love how slim the x10 is, that combined with the fact that the 3rd party backs are ugly and can be poor fitting mean an extended battery isnt really an option for me, whatever suits though ^^

iead1 said:
I prefer this:
Click to expand...
Click to collapse
Nice one where i can get one.
Sent from my X10i using XDA App

I certainly plan on getting a pair of bluetooth headphones, will be interesting to see how they affect battery life...

TechGuru_x10 said:
Nice one where i can get one.
Sent from my X10i using XDA App
Click to expand...
Click to collapse
It's from Sanyo. It's being released in Japan in October, but, I'm sure it will come out internationally as well.

James thanks u were helpful
Sent from my X10i using XDA App

Some additional tips based on my personal experience:
-Using a third-party task launcher helps too. Some may not agree, but it works for me.
-Use a third-party digital clock widget instead of the stock one. Again, YMMV.
-Use a third-party(AGAIN!) MP3 player instead of Mediascape. I'm using Meridian, and notice an increase in battery life when playing MP3s.

I like having some control so I run task killer but there's no auto-kill enabled and if I know the phone is just going to turn it back on in 5min, I don't bother killing those apps. Maybe I should just remove it altogether, but it seems convenient to be able to kill an app at will (I do it with windows sometimes).
mmsbludhound said:
-Use a third-party digital clock widget instead of the stock one. Again, YMMV.
...
Click to expand...
Click to collapse
I think the reason why you find that the stock one drains your battery is due to the "use network provided values" being checked in the date and time settings.

Interesting article. I am running 024 and my battery is life is poor. I managed to get seven hours use yesterday after a full charge. My usage throughout the day wasn't anything too crazy. Where I work I get only a standard signal (no 3G). I seem to get a better battery life.
Sent from my X10i using XDA App

I agree battery life is horrible. It makes me really miss my blackberry.
Even when battery life is low, charging it takes FOREVER, not to mention if you plug it in and play with it at the same time, it charges even slower.
My Blackberry Tour charged fully in what seemed like 45 mins from less than 10% batt life. I know they are different phones, but it just really sucks to me.
I'm debating going back to a blackberry now. The X10 and other android phones (and Iphone), are more toys than anything else.
/end rant.
hehe sorry

Thats odd, my phone charges pretty damn fast, just a few days ago i was pleasantly surprised that it charged from completely empty (id forgotten to charge it) to ~80% in less than an hour.

Ballfuzz said:
Even when battery life is low, charging it takes FOREVER, not to mention if you plug it in and play with it at the same time, it charges even slower.
Click to expand...
Click to collapse
Hmm, mine charges from <10% to 100% within 1 - 2 hours.
Make sure you are charging by AC, charging by USB does indeed take forever.

mmsbludhound said:
Hmm, mine charges from <10% to 100% within 1 - 2 hours.
Make sure you are charging by AC, charging by USB does indeed take forever.
Click to expand...
Click to collapse
Yeah I agree by USB takes forever.

JamesBarnes said:
Additionally the idea of setCPU is a good one however when coming out of sleep or opening an app it takes a little while to get back up to speed. This also causes choppiness. Personally I find lag/choppiness a real pet peeve, it irritates me alot, so I do not use setCPU either. It is true that with careful set up the lag can be minimised but then the battery life gains are also minimal, so I choose to keep full performance and dispense with setCPU. Bear in mind that the hardware platform is already very efficient and well optimised so a software solution will pretty much be a straight trade of performance for battery life.
Click to expand...
Click to collapse
Quite interesting for me, I decided to add some statistical experiment about it.
Under my situation and environment. (I won't go in detail, sorry about that)
With SetCPU were 2.32% per hour without any usage.
W/O SetCPU were 3.18% per hour without any usage.
or approximately 7% maximum saving per day time. (for me)
My SetCPU only effected sleep state.
Not a big deal but still significant different, but it could survive for whole day anyhow.
I'm more interested about Killing app. I might try after this as I see many argument about it.

Cebees said:
Quite interesting for me, I decided to add some statistical experiment about it.
Under my situation and environment. (I won't go in detail, sorry about that)
With SetCPU were 2.32% per hour without any usage.
W/O SetCPU were 3.18% per hour without any usage.
or approximately 7% maximum saving per day time. (for me)
My SetCPU only effected sleep state.
Not a big deal but still significant different, but it could survive for whole day anyhow.
I'm more interested about Killing app. I might try after this as I see many argument about it.
Click to expand...
Click to collapse
Ohh figures, good stuff! Always better to have some numbers to work with.
Do you not find that for a few seconds after waking up the phone gets choppy?
I would definitely be interested in seeing the stats with a task killer

Do you guys leave internet/gps on or something? I get 3 hours/percent on idle.

JamesBarnes said:
Ohh figures, good stuff! Always better to have some numbers to work with.
Do you not find that for a few seconds after waking up the phone gets choppy?
I would definitely be interested in seeing the stats with a task killer
Click to expand...
Click to collapse
Yup, with SetCPU for sleep state, it was 'choppy' for a few sec, mostly effect lock screen and screen switching.

Show your battery record Genuinely

Hi guys,
After buying s2 i was worried about battery life. Because first two days it was like 12-14 hours of medium use.
But now its marathon :d
See some shots..
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"lightbox_download": "Download",
"lightbox_share": "Share",
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"lightbox_toggle_sidebar": "Toggle sidebar"
}
Last image is usage of previous charge.
I was a die hard fan of lg phones from optimus one to optimus black but i am happy now that i switched to s2
Cheers guys and please show your records as well.
Sent from my GT-I9100 using XDA App

I thought i was getting good battery life with medium to heavy usage (27 hours) on Cognition 1.15 but that is exceptional, can you tell me your set up as to how you achieved this amount of battery life.
cheers

Tegrak's kernel and underclocked.
Frozen samsung apps. and brightness mostly 0% as i am fairly fine with the lowest brightness it doesn't hurt my eyes.
also one more thing, i am using overclocking upto 1300 as well and you will be surprised most people will tell you to go underclock to save battery but i didn't and i am just happy with 1.3 Ghz blazing speed.
Here's a shot of running.
REMOVED
Also i used camera for recording movie for about 50 minutes in 720P and 50+ photographs as well which is not mentioned in the above post. I will post once again when my battery will reach 1% because when its below 10% it drops really slow and allows me to use it more unlike when its full.

Sit it on a desk and stare at it. The average screen on time is 5 hrs. You can use that in a day or spread it across 3 days.
jonny68 said:
I thought i was getting good battery life with medium to heavy usage (27 hours) on Cognition 1.15 but that is exceptional, can you tell me your set up as to how you achieved this amount of battery life.
cheers
Click to expand...
Click to collapse
Sent from my GT-I9100 using XDA App

One more thing, i only recharge battery when its below 5% or mostly under 2% to full turning it off. And ofcourse this only first week of using the phone, hope it will increase a bit more by next week.
[Note: I personally believe plugging in and out of charger makes the phone battery drop faster]

chaplu said:
Tegrak's kernel and underclocked.
Frozen samsung apps. and brightness mostly 0% as i am fairly fine with the lowest brightness it doesn't hurt my eyes.
also one more thing, i am using overclocking upto 1300 as well and you will be surprised most people will tell you to go underclock to save battery but i didn't and i am just happy with 1.3 Ghz blazing speed.
Here's a shot of running.
img removed
img removed
Also i used camera for recording movie for about 50 minutes in 720P and 50+ photographs as well which is not mentioned in the above post. I will post once again when my battery will reach 1% because when its below 10% it drops really slow and allows me to use it more unlike when its full.
Click to expand...
Click to collapse
You should blur out your IMEI number from the screenshot buddy.

What ROM are you using?
I usually have brightness set to auto, same as you all Samsung apps frozen, am not using Tegrak i don't believe it's compatible with Cognition ROM, are you using Juice Defender Ultimate or other apps,etc,etc, im on setcpu im 200 min - 800 max - on demand and screen off profile - 200 min - 500 max - consertivave - priority 100.
Seriously impressive all the same..

jonny68 said:
What ROM are you using?
I usually have brightness set to auto, same as you all Samsung apps frozen, am not using Tegrak i don't believe it's compatible with Cognition ROM, are you using Juice Defender Ultimate or other apps,etc,etc, im on setcpu im 200 min - 800 max - on demand and screen off profile - 200 min - 500 max - consertivave - priority 100.
Seriously impressive all the same..
Click to expand...
Click to collapse
I am using stock KF3 rooted nothing else i am using except described in previous post.
Cheers.

That is the best battery life ive ever seen on XDA for any type of smartphone never mind one like the GS2, did you use the Internet/Wi-Fi/GPS/Bluetooth,etc, much,do you have any widgets on your screen, push e-mail,etc, im amazed your getting that amount of time without using Juice defender or some other similar app.

jonny68 said:
That is the best battery life ive ever seen on XDA for any type of smartphone never mind one like the GS2, did you use the Internet/Wi-Fi/GPS/Bluetooth,etc, much,do you have any widgets on your screen, push e-mail,etc, im amazed your getting that amount of time without using Juice defender or some other similar app.
Click to expand...
Click to collapse
Bluetooth yes for 10 minutes transfering some files.
Gps yes for around 1 hour (you can see that in pics atleast it shows usage for ndrive there)
wifi yes around 1 hour but its always on mostly (mostly used for market to download and test applications, gmailing and also some browsing)
3g or edge no i didn't use it.
Games yes i played like drag race etc.
widget yes, battery widget and the running app widget and live wallpapers.

Mine, I think there's a little (big) problem :
Considering the first 8 hours were during the night so I didn't touch my phone :
Running on VR2.1, many things push or so (like 15/30mins refresh) [mails, fb, twitter, news, weather, etc], and good modem (KG2) and CF-Root 4.1.
Any idea/advice please ?
A better rom maybe ?
Thanks in avance

Intratech said:
You should blur out your IMEI number from the screenshot buddy.
Click to expand...
Click to collapse
For those of us n00bs here, what or where is the IMEI number?
Also just to clarify, this is a unique number for each phone, yes?

intruda119 said:
Sit it on a desk and stare at it. The average screen on time is 5 hrs. You can use that in a day or spread it across 3 days.
Click to expand...
Click to collapse
Nuff said.
@OP- What's that Widget is (temp, voltage of battery)? Forgot the name!
Regards.

intruda119 said:
Sit it on a desk and stare at it. The average screen on time is 5 hrs. You can use that in a day or spread it across 3 days.
Click to expand...
Click to collapse
+1
The real secret to great battery life is to disable all the data connections and not use the phone. Since most people are pretty active with their phones, threads about stand-by time are pretty meaningless. Actually, with over a dozen battery life threads already running, you could say new battery life thread are pretty meaningless too.

diby_2000 said:
For those of us n00bs here, what or where is the IMEI number?
Also just to clarify, this is a unique number for each phone, yes?
Click to expand...
Click to collapse
Individual to eachphone usedto identify phone on network.Blocked block after theft .Illegal to change. jje
Sent from my GT-I9100 using XDA Premium App

Ok thats along the lines of what I thought it was. Thanks.
Didn't know it was possible to change it, illigal. Huh
But can some one tell me where it is shown so I can block it if I ever post some screen shots?

I'm on stock K2-CL. I used 3G just a bit today while in a restaurant, wifi is always on, but I normally sit in front of the computer most of the day, or use my tablet at home, so I do very light surfing - mostly while on the can.
I've not installed "app freezers", nor underclocked the processor, nor rooted or removed anything that isn't stock android. Not stopping tasks in the task manager. In the screenshot below, I did play around a bit on Google Earth for 15 min or so, I'm surprised not to see the android market in there because I feel that's what I used most. I use a live wallpaper that's fairly bright (moving clouds).
Brightness on auto - automatic gmail notifications, contact syncs etc.
I'm going to go on a big trip next week, where electricity will sometimes be optional. I do have that Samsung battery case thinggie coming the mail next week - and already have an external battery as well for emergencies, because this phone will die in an hour or two using the gps, or playing games, or doing serious web surfing - or a combination of those things. It runs very hot too if you use it constantly several hours (drove 500 kilometers last week, the phone was very very hot - seemed unhealthy).

If you hold the power button along with the home button it takes a screen shot.
Thought id say to make it easier for ya in future!

thanks a millions

Don't mind the n00b Here.
Found the IMEI number in the status tab of about phone.
Goto remember to keep this out of public photos.

About the battery consumption

Hello, I am a happy owner of the DHD.
It 'a great phone, but as you know, the only drawback is battery life.
I've tried several (few) ROM so far, and one with which I am slightly better is the RCMIX.
Now with this post does not go into details about what set, how to optimize (Sync off, energy saving displays, etc. ...) but I ask all your experience based on the ROM that you have installed:
1 - how to use the terminal?
2 - how long you last on a full charge and use it to do?
3 - What kind of ROM you use?
Thanks to all. I think it will be useful for someone like me, prefer a long battery life rather than three thousand graphicals functions

cubases said:
1 - how to use the terminal?
Click to expand...
Click to collapse
what !?!? which terminal do u mean ?
cubases said:
2 - how long you last on a full charge and use it to do?
Click to expand...
Click to collapse
With normal usage (some SMS, about 30 minutes surfing and emailing during the day, 30 minutes music listening and wifi turned on all day) my Phone lives mostly a full working day. When i come home from work (mostly 8 to 9 hours) i still have 20 % left...
cubases said:
3 - What kind of ROM you use?
Click to expand...
Click to collapse
I'm using RCmix3D Runny 1.3 with Revolution Theme . My phone is overclocked with setCPU to 1,45GHz and the Batterylife is optimized with a good profile set from setCPU (downclocking when display is off...and so on...)

m0rbus said:
what !?!? which terminal do u mean ?
Click to expand...
Click to collapse
Sorry... it mean: phone.... smartphone

m0rbus said:
Batterylife is optimized with a good profile set from setCPU
Click to expand...
Click to collapse
sorry but.. batterylife is an app?

Battery life... it's been quite heavily documented on the DHD fora, but here we go:
1500mah is not enough for a huge screen, especially if you want to use the phone's capabilities. The versatility of this phone means you'll want to be browsing, doing emails, playing processor heavy games etc. Each to his own
So, limit the stuff you sync (mail/facebook, news, weather), or at least reduce the frequency. These things cause "partial wake locks", which stop the phone falling into a deep sleep, after which battery consumption is minimal. Watch out for wifi settings too. Search for BetterBatteryStats (by chamonix) on the Android Apps section of the xda forum for much more detail, and tips.
You should be able to get to the end of the day with a good ROM (eg Leedroid/Revolution - they are very popular, but the threads are immense, which makes looking for information difficult). These ROMs have over/underclocking built in (governors), and you can also undervolt (theoretically reduces consumption too).
Limit transitions, be reasonable with screen brightness etc.
And if all else fails, and you use the phone intensively and can't get to the end of the day, you could invest in a power pack (search Amazon for the New Trent 5000mah power pack, which costs less than €30)

my DHD lasts around 4 hrs continuous screen on, much longer screen off. IMO, LM based roms have the best battery life.
But you could always get cheap $3 batteries for the Desire HD off ebay.

Battery life on my DHD was very bad before i rooted it. I am now running RCMix3D Runny V1.3 and my battery has lasted over 30 hours with alot of use.

cubases said:
sorry but.. batterylife is an app?
Click to expand...
Click to collapse
lol no....Battery life means how long the battery lasts... thats all. No app.

whistle81 said:
Battery life on my DHD was very bad before i rooted it. I am now running RCMix3D Runny V1.3 and my battery has lasted over 30 hours with alot of use.
Click to expand...
Click to collapse
indeed! I can not believe it!... with a lot of use....????!!!!!!!
Your kernel? Radio? Ril?

with m0rbus called "normal usage" my phone lasts around 48h. using my rom and lordmod 7.2 cfs and my personal governor/undervolt settings.
edit: though this result is not really specific to MY miui rom. one should be able to achieve these results with that kernel and settings on every aosp rom.
edit2: with "my normal usage" it last around 24-30h. this includes gameing, emailing, testing settings for developing my rom, rebooting etc.

I've used alot of roms most of the sense ones seem to use about the same battery life better than stock (they get me through work stock needed charged at lunch) but for a week now I've been using miui I've been home about an hour played about 15 min of angry birds, watched a few min on youtube and surfed on xda for a bit and I just over 40% i think that's pretty good going.
Sent from my HTC Desire HD using xda premium

Android Revolution HD 6.1
cubases said:
Hello, I am a happy owner of the DHD.
It 'a great phone, but as you know, the only drawback is battery life.
I've tried several (few) ROM so far, and one with which I am slightly better is the RCMIX.
Now with this post does not go into details about what set, how to optimize (Sync off, energy saving displays, etc. ...) but I ask all your experience based on the ROM that you have installed:
1 - how to use the terminal?
2 - how long you last on a full charge and use it to do?
3 - What kind of ROM you use?
Thanks to all. I think it will be useful for someone like me, prefer a long battery life rather than three thousand graphicals functions
Click to expand...
Click to collapse
Hi, I upgrade the ROM from the group Android Revolution, and my internet I put on 2G and work with WI-FI, GPS and SYNC ON. My battery life is working about 1,5 day.
Before I upgrade I use a Super-Wire patch from ARHD, I think this patch get this performace.
PS.: Sorry My English. I´m Brazilian.

I dunno guys.. I think all that is your subjective feeling and that ROM has no effect whatsoever on battery. Maybe small, but unnoticable. You never do things exactly the same or have battery charged exactly the same. In order to prove ROM has effect on battery usage you would have to make lab tests, i.e. make conditions the same. Moreover, if you look at the statistics of battery usage, it is clear that the most battery goes on SCREEN. And then GPS. Everything else is just a couple of %. All the talk of turning off wifi/3G to conserve power is simply not true. Just look at the statistics! Wifi takes like 2-3% of the power used, tops! The screen with it's 40%-70% is the problem, and there is no way to reduce that...

dalanik said:
The screen with it's 40%-70% is the problem, and there is no way to reduce that...
Click to expand...
Click to collapse
exactly....

You could always try to lower auto brightness levels by way of a flashable patch. I found that after doing this the screen was only using between 30-40% of the battery. Even so, it is the screen that always uses the majority of the battery. All the tips regarding decreasing battery by switching off syncing, wifi, widgets, etc are in my opinion a bit misleading. If you have a good radio and corresponding RIL then this will vastly reduce battery consumption whilst still being able to sync emails, widgets, etc with the wifi on. I recommend Radio_12.54.60.25_26.09.04.11_M2 and it's matching HTC-RIL 2.2.0160HM. I'm currently on Orange in the UK and this combo works best for me across several different ROMs.

michael_duvalle said:
You could always try to lower auto brightness levels by way of a flashable patch.
Click to expand...
Click to collapse
where could I found it?
If you have a good radio and corresponding RIL then this will vastly reduce battery consumption whilst still being able to sync emails, widgets, etc with the wifi on. I recommend Radio_12.54.60.25_26.09.04.11_M2 and it's matching HTC-RIL 2.2.0160HM. I'm currently on Orange in the UK and this combo works best for me across several different ROMs.
Click to expand...
Click to collapse
I have the same your radio/ril.

cubases said:
where could I found it?
http://forum.xda-developers.com/showthread.php?t=1034743
Also, dependant on what ROM you're using you might find it within the development section post relating to your ROM. I'm using Virtuous Unity 2.37 and within the post there's a flashable lower auto brightness patch.
Click to expand...
Click to collapse

dalanik said:
I dunno guys.. I think all that is your subjective feeling and that ROM has no effect whatsoever on battery. Maybe small, but unnoticable. You never do things exactly the same or have battery charged exactly the same. In order to prove ROM has effect on battery usage you would have to make lab tests, i.e. make conditions the same. Moreover, if you look at the statistics of battery usage, it is clear that the most battery goes on SCREEN. And then GPS. Everything else is just a couple of %. All the talk of turning off wifi/3G to conserve power is simply not true. Just look at the statistics! Wifi takes like 2-3% of the power used, tops! The screen with it's 40%-70% is the problem, and there is no way to reduce that...
Click to expand...
Click to collapse
Yes and no.
If you are using the device, you can limit transitions, underclock the processor (via a custom ROM), flash a patch to modify the brightness as mentioned below. That definitely will help reduce consumption while in use.
However, and this is not collected in the Battery Usage option in Settings, Partial Wakelocks are the main contributor to battery consumption. When the phone is inactive, it should be asleep as much as possible - applications like Phone, Mail, Latitude, alarms etc wake it up for either scheduled or ad-hoc events. If you install BetterBatteryStats you will see which processes are keeping your phone awake & hence in a higher state of battery consumption.
Oh, do NOT buy cheap ebay batteries. They lie about their capacity. The only battery which offers more capacity than the OEM one, is Mugen (search in the Accessories forum), it's 1500mah. That extra power could make the difference in making it to the end of the day, but it costs about $45 I think.

You think this behaviour is normal?
Keep in mind that my DHD are this morning on the deck, and only hotspot is active (with whom I connect from the notebook) and sync only 2 emails to connect every 15 minutes each
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http://imageshack.us/photo/my-images/101/screenshot7rt.png/
The display is set:
animations all, auto brightness, timeout 15 seconds
Probably do you think may be due to the fact that until now has always been on the deck in charge?

paul c said:
...Partial Wakelocks are the main contributor to battery consumption. When the phone is inactive, it should be asleep as much as possible - applications like Phone, Mail, Latitude, alarms etc wake it up for either scheduled or ad-hoc events.
Click to expand...
Click to collapse
If I charge the phone before going to sleep to 100% and leave it on, in the morning the battery it at like 60-70% which IMHO is really too much. I have sync set to between 1-2 hour intervals depending on service, but over night I set phone data to OFF so it shouldn't matter, should it? Then why such consumption? I understand it over the day when I use it, but at night the display is off, data is off so what could cause this? It can't be syncing since the data is off....

[Q] Disappointing Battery Life

I got a Nexus 4 yesterday, and so far it has been excellent. Really fast and has all the features I want. The battery life is pretty poor though. I am at 28% with a screen on time of only about 2 hours. The total time is about 8 hours. I haven't been using it a lot. The main thing consuming battery seems to be Nova Launcher for some reason. I have it on my Nexus 7 and it doesn't decrease battery life at all, but it seems to use a lot more on here. It was at 24% according to GSam Battery Monitor.
I just followed a bunch of instructions for increasing battery life from various websites so I will see how it goes. I now have all the Google syncing disabled, location services off and brightness on auto.
Is there anything I should be doing? Why is Nova Launcher's usage so high?
Thanks,
EDIT: Could it be the widgets I am using? I have two Gmail inbox widgets, the messaging widget and the circle battery widget.

Same here though I'm not sure its nova, my battery got as bad as yours when i rooted to stock.
Sent from my Nexus 4 using xda app-developers app

SupaLawlCat said:
EDIT: Could it be the widgets I am using? I have two Gmail inbox widgets, the messaging widget and the circle battery widget.
Click to expand...
Click to collapse
it could, or any other apps you have working in the background. it can also be how you use the device. but before you assume anything about your battery life, give it 3-4 battery cycles before it normalizes.

simms22 said:
it could, or any other apps you have working in the background. it can also be how you use the device. but before you assume anything about your battery life, give it 3-4 battery cycles before it normalizes.
Click to expand...
Click to collapse
Alright. I have minor OCD kind of thing so I always close the active apps through the task manager as soon as I exit them. I'll give it a few more days and then pursue the issue further.

SupaLawlCat said:
Alright. I have minor OCD kind of thing so I always close the active apps through the task manager as soon as I exit them. I'll give it a few more days and then pursue the issue further.
Click to expand...
Click to collapse
im ocd about that too, lol. the back button to kill is one of my favorite custom rom features. also, autostarts and greenify are both great apps to make sure that you have mich less ctap opening in the background. anyways, im a heavy user normally, battery life on the nexus 4 id never call bad. usually i get 3.5-5.5 hours screen on time, depending on use. but then again, i use a custom kernel thats optimized for performance and battery. but, stock rom/kernel isnt bad on battery.

I too Force Close all the social networking apps before sleeping and turn wifi off. And i daily get around 4 hrs of OST. Will attach pics later to show. So to get 4 hrs OST you need really need to have a custom kernel. Just optimize your usage and you are fine with the stock kernel.
Phone is totally stock. Not rooted. And i got 6 pages on Apps installed.
I even used to clear RAM every now and then but I just stopped doing it as I couldn't find it doing anything better.

The battery life is much better now. Yesterday when I got back from school it was at 40% or so, and today it was at 68%.

Gets better after a few battery cycles. My battery life was average, so I rooted and with matr1x kernel it's snappier and better battery.
Sent from my Nexus 4 using Tapatalk 2

i'm stock and my battery life was shockingly bad on the default settings until yesterday when i tried some fixes and they have made things much better.
looking at my N4 right now, i'm still on 58% after 22 hours. that's after several voice calls, some browsing & reading emails, GPS navigation using Maps, a couple of skype video calls, wake-up alarms etc.
basic fixes as follows:
- screen brightness right down to maybe 10-15%
- data off when not being used, ditto location services
- NFC and BT off.
- i've left wifi on as it doesn't seem to take much battery if it's not being used.
that's all! after charging last night, i woke after 6 hours or so and was amazed to see it had dropped only 1-2%, so apparently nothing is waking it from sleep.

One thing that really improved my battery life (when I had a Nexus 4) and something I tell to anybody with poor battery life, is to go into maps, go to settings, location settings, and uncheck "report from this device". If you've got the app "wakelock detector" just watch the wakelocks from maps almost entirely disappear. It nearly doubled my battery life at the time.
Sent from my SGH-T889 using xda premium

thebeastglasser said:
One thing that really improved my battery life (when I had a Nexus 4) and something I tell to anybody with poor battery life, is to go into maps, go to settings, location settings, and uncheck "report from this device". If you've got the app "wakelock detector" just watch the wakelocks from maps almost entirely disappear. It nearly doubled my battery life at the time.
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
Hey thx man that didn't work but it did start me down the path to fix my problem.
I found out it had something to do with my GPS options its in settings and location access WiFi and GPS location options i checked it off and now i am getting 1 hour screen on time for every %10 if you do the math i have about 8hours of screen on time! I also have setcpu app which is giving me about 48hours of standby time, i will upload some screens after a bit more testing.
Sent from my Nexus 4 using xda app-developers app

My battery life is brill and i never turn owt off or force anything to close, it is only bad when i play a 3d game or something but what do you expect. over night it only drops about 1% every 4 hours which is a bit bonkers.
(screen on auto, fully stock with Nova and not rooted)

root your ish bish and get dem kick ass kernel burnals and rom toms and you will nevers has to worry bouts turning ish off or freezing ice na saying homie foo schnickens 49 percent bombers up in this piece

still haven't charged my N4 since my last post on this thread.
now 1 day 15h and still 40% charge left

melcali said:
root your ish bish and get dem kick ass kernel burnals and rom toms and you will nevers has to worry bouts turning ish off or freezing ice na saying homie foo schnickens 49 percent bombers up in this piece
Click to expand...
Click to collapse
Lol, so whats a custom kernel? cuzz i think I don't hav one because i hav rooted stock rom. sorry not to change subject
Sent from my Nexus 4 using xda app-developers app

first day of full use in my nexus 4 I got 5 hours of screen on time. stock rom and kernel, just rooted. I think it's pretty decent.
just do what people say, disable location useless stuff and monitor your wake locks.
Sent from my Nexus 4 using Tapatalk 2

If you would like to risk such things as unlocking bootloader, rooting, installing custom ROM and kernel, then it'd be easier for you.
Personally, I've found codefireX ROM and faux123 kernel to be battery friendly and very responsive, but of course you've got to be a bit fixed on such things as playing with your devices and getting fun from it to do that

another update:
after 20m browsing/ emails this morning and a couple of calls, i'm down to:
2d 9h 18m and 11%

disable auto brightness
Sent from my Nexus 4 using xda premium

OK, I finally got the "connect to charger" message just now after 2d 13h. here are my final battery stats:
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HTC One 4.2.2 Update UK

I just updated my HTC One yesterday and the battery drain is ridiculous. I took my phone off the charger at 6am today and watched some of a film listened to a bit of music and sent texts as usual and phone went dead at 2pm !
Usually it would last till 6pm with heavy usage but since the update the battery life has deteriorated.
My phone is less than a week old and overall really impressed with it till now.
Anyone else having this issue and can suggest a fix?
Sent from my HTC One with Boooooooom Sound.

ipmanwck said:
I just updated my HTC One yesterday and the battery drain is ridiculous. I took my phone off the charger at 6am today and watched some of a film listened to a bit of music and sent texts as usual and phone went dead at 2pm !
Usually it would last till 6pm with heavy usage but since the update the battery life has deteriorated.
My phone is less than a week old and overall really impressed with it till now.
Anyone else having this issue and can suggest a fix?
Sent from my HTC One with Boooooooom Sound.
Click to expand...
Click to collapse
You may need to give it a few days and a couple of battery cycles to settle itself down again. Try installing Greenify to 'hibernate' running services in the background and BetterBatteryStats to monitor kernel wakelocks and what's using your battery in general..
Sent from my HTC One using xda premium

redbull123 said:
You may need to give it a few days and a couple of battery cycles to settle itself down again. Try installing Greenify to 'hibernate' running services in the background and BetterBatteryStats to monitor kernel wakelocks and what's using your battery in general..
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
I am not rooted at present. I see no need with the new phones coming out.
Hopefully the next cycle will improve as at present I can see the battery percentage decrease far to quickly.
Sent from my HTC One using xda premium

ipmanwck said:
I am not rooted at present. I see no need with the new phones coming out.
Hopefully the next cycle will improve as at present I can see the battery percentage decrease far to quickly.
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
Sorry, forgot Greenify was root only.. BetterBatteryStats would help identify any strange kernel wakelocks though
Sent from my HTC One using xda premium

Have you turned auto-sync on and for all apps that are listed?
I noticed an extremely improvement in battery consumption when deactivating sync for few apps.
Sent from my HTC One

.vermilion said:
Have you turned auto-sync on and for all apps that are listed?
I noticed an extremely improvement in battery consumption when deactivating sync for few apps.
Sent from my HTC One
Click to expand...
Click to collapse
I will take a look. Thanks man. Are you on the new update though ?
Sent from my HTC One using xda premium

ipmanwck said:
I will take a look. Thanks man. Are you on the new update though ?
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
Yes, I am!
Here my battery results (2 cycles)
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- display brightness all time at minimum
- auto-sync on, but deactivated for some apps
- only 2G network
- power saving mode on all time
Sent from my HTC One

.vermilion said:
Yes, I am!
Here my battery results (2 cycles)
- display brightness all time at minimum
- auto-sync on, but deactivated for some apps
- only 2G network
- power saving mode on all time
Sent from my HTC One
Click to expand...
Click to collapse
Dude, might as well switch it off...
Battery drain is definitely higher after the update. Frankly not a great update at all...

lysergic said:
Dude, might as well switch it off...
Battery drain is definitely higher after the update. Frankly not a great update at all...
Click to expand...
Click to collapse
Agreed. Just downloaded green power premium from play store and juice defender ulitimate lets see if they can help. I like to have auto brightness a d to use my phone so this update is bugging me (((
Sent from my HTC One using xda premium

For me the 4.2.2 update has improved my battery life.
Everything completely stock, get about 35-40 hours battery life (100% to ~1%) with 2 to 4 hours on screen time. Obviously depending on what you do with that screen on, will dictate just how much battery life you use. But for me, usually browsing, reading, watching YouTube. Dont really game or do anything massively intensive.
Also everything on stock normal, (locations, gps, auto sync, blinkfeed, etc).
As I said depending on what you do with your phone, your battery life with on screen time will increase/decrease. Also whether you use it as a smartphone (all sync etc on) or reduce it to a phone (2g, power saver, screen dimmed, etc) makes a huge difference.

ipmanwck said:
I just updated my HTC One yesterday and the battery drain is ridiculous. I took my phone off the charger at 6am today and watched some of a film listened to a bit of music and sent texts as usual and phone went dead at 2pm !
Usually it would last till 6pm with heavy usage but since the update the battery life has deteriorated.
My phone is less than a week old and overall really impressed with it till now.
Anyone else having this issue and can suggest a fix?
Sent from my HTC One with Boooooooom Sound.
Click to expand...
Click to collapse
Try a hard reset. My battery life is fine.
come scaricare musica da youtube

lysergic said:
Dude, might as well switch it off...
Battery drain is definitely higher after the update. Frankly not a great update at all...
Click to expand...
Click to collapse
I'm working in dark rooms so why keeping display brightness not at minimum? And on most places I only got 2G network, so why not forcing the phone to only use this?
And sync... Yeah... I don't need the weather to be updated every hour... Or news... They're appearing on my BlinkFeed anyways...
And I'm using my phone as a smartphone as well Over 6 hours screen on time is mostly Facebook, WhatsApp and browsing.
Sent from my HTC One

Nokiacrazi said:
For me the 4.2.2 update has improved my battery life.
Everything completely stock, get about 35-40 hours battery life (100% to ~1%) with 2 to 4 hours on screen time. Obviously depending on what you do with that screen on, will dictate just how much battery life you use. But for me, usually browsing, reading, watching YouTube. Dont really game or do anything massively intensive.
Also everything on stock normal, (locations, gps, auto sync, blinkfeed, etc).
As I said depending on what you do with your phone, your battery life with on screen time will increase/decrease. Also whether you use it as a smartphone (all sync etc on) or reduce it to a phone (2g, power saver, screen dimmed, etc) makes a huge difference.
Click to expand...
Click to collapse
I though we moved on from doing all this crap.
Why can't android manage battery like windows does or even better htc work with Google and sort the issue.
All I know is before this update I had ok battery life now I have extremely poor life. I would suggest it's the update.
Sent from my HTC One using xda premium

ipmanwck said:
I though we moved on from doing all this crap.
Why can't android manage battery like windows does or even better htc work with Google and sort the issue.
All I know is before this update I had ok battery life now I have extremely poor life. I would suggest it's the update.
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
100% agree with you..now the phone charges quicker but it discharges quicker too.. yes i did hard reset, autosync etc etc.. no change of my usage patterns, i now get half the usage..
dont know why htc just didnt go straight to 4.3 as this significantly improves battery life..4.2 acrosss the board was a bad update.

Anyone tried the Snapdragon™ BatteryGuru app?
https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app

Had the same issue after official ota. Tried a hard reset but didn't work. Then I unlocked bootliader and switched to maximus 10 Rom and I'm back in the game!
Sent from my HTC One using xda app-developers app

try this made a difference (for me at least)
Wifi settings
keep wifi on during sleep - Never
Also downloaded lux to change brightness...
both have made a significant difference.

dahmmy said:
try this made a difference (for me at least)
Wifi settings
keep wifi on during sleep - Never
Also downloaded lux to change brightness...
both have made a significant difference.
Click to expand...
Click to collapse
Same. :good:

Please continue discussion about the 4.2.2 update here --> http://forum.xda-developers.com/showthread.php?t=2305490