[Q] Problem with Battery Life - Samsung Galaxy R i9103

I bought this phone last week. And it worked fine for a few days but a couple of days ago I charged it to 99% before sleeping and then took it off the charger. When I woke up after 7 hours, it was at 51% battery. I restarted the phone and it worked fine. Then last night I again charged it to 99% and removed it from the charger before sleeping. When I woke up, it was at 70% after 4 hours of sleep.
A lot of the battery is being used by 'Android OS'.
Right now my battery is at 26% after being used for about 8 hours of average use.
31% battery usage is by Android OS. It has used CPU for 50m 16s.
Display has been kept on minimum brightness and used for 3h 14m and used 23% of the spent battery.
My problem is with the Android OS thing. What is using so much of the CPU? My friend's S2's Android OS had used the CPU only for 27m after 12 hours.

Maybe you could ask yourself, waht did you do just before the problem started.
Maybe:
- More syncing eg. email account?
- Power saving functions on/off?
Or any else strange behavior of android

I did install Whatsapp before the first time it happened. But removed it before second time.
Even hard reset my phone today.
Let's see what happens tomorrow morning.
*Fingers Crossed*
Sent from my GT-I9103 using XDA App

Maybe u wanna include details like
1) wifi on/off periods
2) data on/off periods
3) overclocking
4) back ground processes/programs that are continuous running
5) Rom version
I dun have any data plans nor do i use wifi.
Calls less than 30mins in total. less than 50 SMS.
No games. No overclock.
My phone lasts more than 2 days !

As I said it was an average usage.
About 20 minutes of phone calls. Some messaging. No internet (wifi or date)
I am still running the stock firmware so no overclock.
I slept for about four and a half hours and the battery barely shifted from 100 to 99 tonight. But the 'Android OS' has used the CPU for 15 minutes in this duration.
Can somebody tell me the stats of the CPU usage by this process on their Galaxy R?
Sent from my GT-I9103 using XDA App

Battery usage
Some information:
- Overclocked at 1.35 Ghz (ardatdat's kernel)
- Wifi ALWAYS ON
- DATA ALWAYS ON (for whatsapp)
- Only 2G (GPRS/GSM mode)
- Average user (1 month about 15 min call and 100 SMS) but 500 +/- whatsapp
- No push mail but check it twice a day
-Automatic display brightness
Battery Usage:
1D 0h 54m
Android OS - 27% (52m 21s)
Display - 18%
Android System 13 %
Music 8 %
Mediaserver - 7 %
Internet - 6%
And quite many below 5 % like Market and Phone idle.

flick your 3G connection to 2G/GSM and make it as default in Setting->Wireless-> Mobile networks. You may notice a big difference.
BTW, I notice with ardatdat's new kernel my phone battery actually last longer than a fully stock 2.3.6 KK5. I think I m flashing back to ardatdat's

In the stats that you posted, you say that your battery time is 1d 54m. Is that on a single charge?
Have you noticed any battery backup improvement after rooting? I had thought of not rooting it till a custom ROM is available but I'll do it if it helps my battery life.

Moodaleon said:
flick your 3G connection to 2G/GSM and make it as default in Setting->Wireless-> Mobile networks. You may notice a big difference.
BTW, I notice with ardatdat's new kernel my phone battery actually last longer than a fully stock 2.3.6 KK5. I think I m flashing back to ardatdat's
Click to expand...
Click to collapse
Guess I'll try his kernel then. Thanks.
Sent from my GT-I9103 using XDA App

FeralFire said:
In the stats that you posted, you say that your battery time is 1d 54m. Is that on a single charge?
Have you noticed any battery backup improvement after rooting? I had thought of not rooting it till a custom ROM is available but I'll do it if it helps my battery life.
Click to expand...
Click to collapse
Yes, that's on a single charge. I haven't notice a big difference of battery life between the stock kernel and ardatdat's kernel unless the performance

1. There is a problem after wi-fi on/off on some 2.3.4 ROMs (at least russian one)
how to check the problem:
turn wi-fi on, turn wi-fi off (not sure if you should done establishing connection to interent)
then put phone on stand by
check if it consumed about 30% of battery after 8 hours of sleep (normally 2-4%)
2. Also there is kernel related problem
Since it upgraded to 2.6.36 there is issue - too much kworker/u processes started when device goes sleep and wakes up several times.
So, install root, advanced task kill or terminal emulator and kill those processes (as well as some other)
Turn off background synchronization, e-mails, social hubs and other internet related applications if not needed.
My current battery status: 63%, since 2 days 9 hours abd 14 mins of use

How can I check my Kernel?
Sorry for the noob question. New to android.

FeralFire said:
How can I check my Kernel?
Click to expand...
Click to collapse
Menu button
Settings
Last menuitem - About the phone
There is string like this:
Kernel version
2.6.36.3-I9103...
But don't bother... We should have all 2.6.36 kernel by default

Thanks.
Flashed ardatdat's kernel. Rooted now. Will be monitoring battery and freeze whatever bloatware puts too much stress on the battery.
Sent from my GT-I9103 using XDA App

andrew051974 said:
1. There is a problem after wi-fi on/off on some 2.3.4 ROMs (at least russian one)
how to check the problem:
turn wi-fi on, turn wi-fi off (not sure if you should done establishing connection to interent)
then put phone on stand by
check if it consumed about 30% of battery after 8 hours of sleep (normally 2-4%)
2. Also there is kernel related problem
Since it upgraded to 2.6.36 there is issue - too much kworker/u processes started when device goes sleep and wakes up several times.
So, install root, advanced task kill or terminal emulator and kill those processes (as well as some other)
Turn off background synchronization, e-mails, social hubs and other internet related applications if not needed.
My current battery status: 63%, since 2 days 9 hours abd 14 mins of use
Click to expand...
Click to collapse
I have the same wifi problem on swedish 2.3.4 rom, even after turning of wifi it draws a lot of power, only reboot helps.
If i reboot after using wifi, and dont start it again the battery last for several days with moderate use.
Does the root/kernel change correct that wifi issue?

Huxflux said:
I have the same wifi problem on swedish 2.3.4 rom, even after turning of wifi it draws a lot of power, only reboot helps.
If i reboot after using wifi, and dont start it again the battery last for several days with moderate use.
Does the root/kernel change correct that wifi issue?
Click to expand...
Click to collapse
Will get back to you with that, but currently it seems that either the answer is yes or the 'bug' hasn't hit yet cause even after switching wifi off, the battery backup went back to what it should be, though I haven't had a lot of standby time. Will take it off the charger before sleeping and get final results tomorrow.

Battery issue
Hi.
I got the same problem, on stock rom. Fully charged before going too sleep, 60% battery when i wake up in the morning. Standby mode, 3G and WiFi off. I searched the net and found somethig about the sd-card, dont remenber the site. I removed my sd card (16 GB class4 SanDisk micro-sd), (slot is free) and now it drains about 1% over night instead of 40%. Before it last 1 day with average use, now it last 4 days. I hope sw uppgrade will fix the problem.
Regards
Finnbeck

Running InfectedROM V1 on ardatdat's kernel. Amazing bettery life. Lasted 12 hours with about 2 hours of music, an hour of calls, an hour of internet browsing over wifi and frequent texting over the entire 12 hours.
Sent from my GT-I9103 using XDA App

Related

Battery life VASTLY improved since update

unplugged 2 hours, wifi on, gps on, auto update on, facebook, played friut ninja for about 20 minutes, 1 game of cribbage, and been getting 4-5 email per hour, battery at 86%, before I would have been at 60% with that much use.
Anyone else seen battery life increases?
This. It's noon and I'm still at 80%. I used to have to set my phone to flight mode all day at work just to make it through the day. Now I can leave 3G on all day and not worry about it. That's the best part of the update in my opinion.
I was about to post this also. Yes, I have noticed a dramatic increase in battery life since I've updated. Now granted, it's been less than 24 hours but it is noticeable. I'll see how it goes over the next few days. But I agree, I am very happy with the update so far.
Which ROM we're you guys running before? FJ6 (stock)? A lot of users noticed better battery life after updating to some of the leaked builds (JH2 onwards)
Sent from my SAMSUNG-SGH-I897 using XDA App
mesasone said:
Which ROM we're you guys running before? FJ6 (stock)? A lot of users noticed better battery life after updating to some of the leaked builds (JH2 onwards)
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
I'm running completely stock-out-of-the-box since I got it.
I actually have worse battery life since updating. Have background sync off,GPS off,push off and lost 30% from full charge in 2 hours
noidd said:
I actually have worse battery life since updating. Have background sync off,GPS off,push off and lost 30% from full charge in 2 hours
Click to expand...
Click to collapse
I have noticed the same with all of the same settings as you
4h 45min since unplug.
Email push multiple times an hour, text messages, light internet use, light market use and 35 minutes of guns'n'glory. I am at 71%
Glad someone else noticed this
I'm a victim of the partial update but my battery drain has been nearly half! I've actually left live wallpapers on and can make it through the while day at the rate I'm going
Sent from my SAMSUNG-SGH-I897 using XDA Ap
6 hours 53 minutes since unplug and I'm at 23% battery. This is roughly on track with previous battery depletion, but today I've been doing heavier internet and Facebook use than usual. I think that, previous to this update, I would have had to charge by now. This is with background data and sync on, over wifi, with a combination of Google Listen, Music Player, and Pandora use.
The telling point is that screen battery use is about 10-12% lower than usual for this type of usage, at 54%. I've seen it as high as 70% on days when I'm playing around with the phone a lot.
I'm ready to call this an improvement.
Sent from my SAMSUNG-SGH-I897 using XDA App
My phone was at about 75% at around 8:00PM last night. It's currently 2:42PM now and it's only down to 25%. Granted, it was in sleep mode from around 12:30AM to about 7:00AM. But I did use it moderately last night and throughout the day today. So the battery performance has definitely improved for mine (stock with yesterday's update).
For those who have seen an improvement:
- Did you use a task killer pre-update?
- Are you using one now?
ageros said:
For those who have seen an improvement:
- Did you use a task killer pre-update?
- Are you using one now?
Click to expand...
Click to collapse
I was not using a task killer either pre- or post-update.
r_3 said:
I have noticed the same with all of the same settings as you
Click to expand...
Click to collapse
Same here... I also let the phone drain to the point of where it shut off, charged and lost 30% in 4 hours!
Yes
ageros said:
For those who have seen an improvement:
- Did you use a task killer pre-update?
- Are you using one now?
Click to expand...
Click to collapse
yes pre and post, I am using auto kill
if i do this update do i lose my root?
Unfortunately my battery life has been greatly decreased by the update. My phone is rooted, but the update installed without any trouble on the first try. Before the update the phone was fine between 9am and 1-2am without charging it at all. That's being on wifi most of the time, and maybe a bit of talking, e-mail, and rss reading. Once asleep I'd let it charge overnight. Typically Display used the most battery, usually about 50%.
Since the update I find that I need to charge the phone in the middle of the day. The first full day of the update I used the audio player for several hours, so I thought maybe that was it, but I've done that before without a major impact on the battery. Today I didn't use the audio player at all, and after 8 hours the battery is down to 26%.
According to the power usage information the largest consumer is Voice calls, at 29%. That was 11m 46s of call time. Looking at Juiceplotter, for a typical day at work before the update my battery dropped about 2% in 2 hours, with the phone on wifi, and otherwise idle. Today the phone lost 6-9% in 2 hours of being idle.
The last time I charged my phone was yesterday morning. I just plugged it in an hour ago at 15%. Thats like, 35 hours on a charge after moderate usage. Not bad. Much better than my old G1 heh.
I'm at 45 hours, still at 29%. Light usage, probably ~12 hrs in flight mode, but music player on for about 5 hrs, 5 min voice call, a few texts, some facebook/web. Still very impressive!
I've had slightly better battery life since the update.

what exactly eats battery on android system? (Battery woes!)

Ok, just flashed to CM 7 #22. My battery usage indicates 35% for android system.
My settings were the same on RC 2 and usage of android system was like 5%?
what exactly is wrong?
I have sync apps all day long on RC 2 too.
more info is needed. you need to post your total battery percent that you started with, and how much battery dropped, and how many hours that took to drop. and also post your "screen on" time. without that info, your android system 35% is meaningless. maybe the phone was only unplugged for 25 seconds, and android system used 35% in those 25 seconds. we need the relative usage.
RogerPodacter said:
more info is needed. you need to post your total battery percent that you started with, and how much battery dropped, and how many hours that took to drop. and also post your "screen on" time. without that info, your android system 35% is meaningless. maybe the phone was only unplugged for 25 seconds, and android system used 35% in those 25 seconds. we need the relative usage.
Click to expand...
Click to collapse
im sorry, . I just wiped battery stats so dont really have a screenshot of it.
but essentially i started with 65% battery at 6pm, ended with 32% at 10pm, with no major usage (no games, minor web surfing, accounts syncing were on) , display usage was tabulated to be 50% and android system 35%.
afishpie said:
im sorry, . I just wiped battery stats so dont really have a screenshot of it.
but essentially i started with 65% battery at 6pm, ended with 32% at 10pm, with no major usage (no games, minor web surfing, accounts syncing were on) , display usage was tabulated to be 50% and android system 35%.
Click to expand...
Click to collapse
you wiped battery stats without recalibrating your battery.. google on how to do it if you're unsure
zephiK said:
you wiped battery stats without recalibrating your battery.. google on how to do it if you're unsure
Click to expand...
Click to collapse
That info was before i wiped battery stats. I recalibrated my battery and will post an update in about 10hrs time.
Roughly 3 hours into battery time, with minor browsing. Android system is using 30%.
Sent from my Nexus S using XDA App
14 hrs on and android system is eating 23%.
Sent from my Nexus S using XDA App
Seems pretty normal to me. How much battery have you lost.
I have a N1 in 2.3.3 and had the same problem. Right after I updated from 2.2.1 to 2.3.3 android system would devour my battery very quickly. Turned out to be an issue with how gingerbread handles wifi sleep. I changed wifi sleep policy to Never and the android system usage of my battery decreased slightly. Then I took it a step further and started turning off my wifi once I left home (constant wifi source). Since then my battery life has been amazing.
Again I'm on a N1 not a NS but maybe it'll help.
Sent from my Nexus One
RogerPodacter said:
Seems pretty normal to me. How much battery have you lost.
Click to expand...
Click to collapse
After 1 day, my android system now takes about 8%, things are getting back to normal.
Sent from my Nexus S using XDA App
OblivioN1 said:
I have a N1 in 2.3.3 and had the same problem. Right after I updated from 2.2.1 to 2.3.3 android system would devour my battery very quickly. Turned out to be an issue with how gingerbread handles wifi sleep. I changed wifi sleep policy to Never and the android system usage of my battery decreased slightly. Then I took it a step further and started turning off my wifi once I left home (constant wifi source). Since then my battery life has been amazing.
Again I'm on a N1 not a NS but maybe it'll help.
Sent from my Nexus One
Click to expand...
Click to collapse
I agree with this as well.. Infact, i'll go one step further and say leave ur wifi off, if your phone finds it hard keeping the connection..
I assumed that leaving my Wifi on would be a good thing while I was at home..but certains parts of my house have pretty lousy wifi coverage... so i switched wifi off completely..and tadaaa.. my battery lasted a lot longer..
(i guess its probably because my phone had to spend lesser energy "searching for wifi" and then hooking onto poor reception, only to lose it again in 5 minutes.)
have a look at the inflection in the battery usage graph attached at the point where i switched wifi off ..definitely looks like something's up with wifi
Try CM7 build #26. The battery life is quite impressive on it, especially when on standby mode. Over night, it drained the battery less than 2%.
i'm having an issue with this as well.
running stock rooted rom
11hrs 49 m on battery
display 29% screen on 2h 12m
android system is 17%
etc.
why is android system so high!? i don't recall it ever doing this before until recently.
@crzdcole
If your overall battery life is still ok, then nothing to worry about. High percentages in one part doesn't automatically mean something is wrong, might as well be that the other parts - in relation - just take less.
afishpie said:
Ok, just flashed to CM 7 #22. My battery usage indicates 35% for android system.
My settings were the same on RC 2 and usage of android system was like 5%?
what exactly is wrong?
I have sync apps all day long on RC 2 too.
Click to expand...
Click to collapse
please try this http://forum.xda-developers.com/showthread.php?t=1121294

[Q] battery drains fast

im using lbc rom 0.5.2
my battery drain in half day
all the accounts sync is once a day
brightness in 30%
anafi80 said:
im using lbc rom 0.5.2
my battery drain in half day
all the accounts sync is once a day
brightness in 30%
Click to expand...
Click to collapse
lbc 5.2
wifi on demand
mobile data on
sync: 1 per hour exchange from 8 to 5
gmail push
fb and flickr once a day
stock freq (no setCPU,...)
stock autobrightness
10% battery drain in 8 hours of little usage.
In average 50% at evening
but drains a lot when playing some games
What'S shown in your battery stats?
Did you do a full wipe before flashing?
Try a full wipe and reflash - only with little market apps installed
i did a full wipe with the tool you gave in your site
im using 3g
very few calls and sms
no games
very strange
every hour 20 % less
anafi80 said:
i did a full wipe with the tool you gave in your site
im using 3g
very few calls and sms
no games
very strange
every hour 20 % less
Click to expand...
Click to collapse
That's defintiv much too much.
Look at battery stats in settings - phone-info - batterty - drain (or something similar) if any market app drains your battery.
Did you restore system(!)settings with titanium?
Last exit: wipe everything (eg from recovery - I'm not lbc,so it's not my tool ), redownload (md5 sum!?), reflash - and do not install any market apps for the first hours. Battery drain should be max 1% per hour with screen off.
anafi80 said:
i did a full wipe with the tool you gave in your site
im using 3g
very few calls and sms
no games
very strange
every hour 20 % less
Click to expand...
Click to collapse
Did you perform the battery re-calibration that is recommended after new ROM install?
see LBC post http://forum.xda-developers.com/showpost.php?p=14981516&postcount=581 where he corrected the previously written method.
I'd recommend following these instructions and then check battery usage again.
This thread should not have been started here in Development section, but either as post in LBC ROM thread or as new thread in general.
ben_pyett said:
Did you perform the battery re-calibration that is recommended after new ROM install?
Click to expand...
Click to collapse
I never ever did such a re-calibration, but perhaps it helps...
Normaly battery indicator is correct after at last 2 days of normal usage (I always plug in over night and never turn off the phone - so seems that it re-calibrates itself)
ben_pyett said:
This thread should not have been started here in Development section, but either as post in LBC ROM thread or as new thread in general.
Click to expand...
Click to collapse
+1
mod please...
I had the same problem with lbc 0.5.2. The battery life was like 12 hours normal use.
So i went back to lbc 0.5.1 and everything works fine. Standby time now more then 36 hours.
Maybe this will help you for a while.
Greetings
datoml said:
I had the same problem with lbc 0.5.2. The battery life was like 12 hours normal use.
So i went back to lbc 0.5.1 and everything works fine. Standby time now more then 36 hours.
Click to expand...
Click to collapse
Sorry to repeat, but did you try battery re calibration yourself and not the version described on post one of LBC thread but the new and corrected version where you reset battery stats using app at 100 mentioned in post #581
Sent from my HTC Desire S using XDA Premium App
Hey, sorry that I don't wrote that I tried this too.
I wrote with LBC about it. He told me, that he dont has the problem.
I also thought, that maybe the value isnt right, so I dont recharged it, but at 1 percent the phone turned off.
With 0.5.1 I dont have any problems.
mine drains fast as well...
I have followed all the instructions for a newbie with android in terms of saving battery life, but I still feel that my battery drains fast than the normal. Here is the scenario...
Full charge @ around 10-11pm, with one hour extended charging.
Turn off wi-fi before sleeping @ 11:30pm.
In the morning, battery is at 99% capacity as per battery indicator. Screen is at 25% brightness.
Turn on mobile network connection upon arriving at work @ 7am, there's no wi-fi in the office.
At about 9-10am, battery indicator is at 52% capacity. I normally use my phone in browsing Facebook, playing a li'l poker before working (my office is secluded), some browsing etc. I don't watch videos on my phone.
At around 12noon to 1pm, I connect my phone to USB charging in my PC, battery is at 25% only.
I don't think this is normal. My best guess is that the network connection is draining my battery, but I have no other choice but to use it. I'm need it turned on while in office to be connected to the outside world...
Anyway to extend battery life???
lorenz_vill said:
I have followed all the instructions for a newbie with android in terms of saving battery life, but I still feel that my battery drains fast than the normal. Here is the scenario...
Full charge @ around 10-11pm, with one hour extended charging.
Turn off wi-fi before sleeping @ 11:30pm.
In the morning, battery is at 99% capacity as per battery indicator. Screen is at 25% brightness.
Turn on mobile network connection upon arriving at work @ 7am, there's no wi-fi in the office.
At about 9-10am, battery indicator is at 52% capacity. I normally use my phone in browsing Facebook, playing a li'l poker before working (my office is secluded), some browsing etc. I don't watch videos on my phone.
At around 12noon to 1pm, I connect my phone to USB charging in my PC, battery is at 25% only.
I don't think this is normal. My best guess is that the network connection is draining my battery, but I have no other choice but to use it. I'm need it turned on while in office to be connected to the outside world...
Anyway to extend battery life???
Click to expand...
Click to collapse
From 99% to 52% in 2 to 3 hours?! No that's not normal. Install "better battery stats" from this thread...
http://forum.xda-developers.com/showthread.php?t=1179809
...so you can see what's causing the drain in that 3 hour period.
Sent from my HTC Desire S using xda premium
I'll give it a shot now...
It's 11:13am now, battery is at 38%
lorenz_vill said:
I don't think this is normal. My best guess is that the network connection is draining my battery, but I have no other choice but to use it. I'm need it turned on while in office to be connected to the outside world...
Anyway to extend battery life???
Click to expand...
Click to collapse
Does this mean you are connecting to data through the mobile network?
Is your wifi connection still switched on as well?
If wifi is searching for a connection all the time this will seriously drain the battery.
det66 said:
Does this mean you are connecting to data through the mobile network?
Is your wifi connection still switched on as well?
If wifi is searching for a connection all the time this will seriously drain the battery.
Click to expand...
Click to collapse
WIFI is turned off.
I have installed the app already.
Question: Does social apps: Facebook, IM+ and alike consume much battery??
It is always turned ON.
lorenz_vill said:
I have installed the app already.
Question: Does social apps: Facebook, IM+ and alike consume much battery??
It is always turned ON.
Click to expand...
Click to collapse
Depends on their sync settings. The battery stats app will show you which is the greatest consumer. If it happens to be facebook, dial back the usage. I used IM+ briefly, but uninstalled it. I can't remember why. I'm not on facebook.
Sent from my HTC Desire S using xda premium
I do the calibration after any flashing of custom rom. And it's allways helps to me, battery live is 2-3 days after this, and 1 day or few hours if not calibrated after flashig new rom.
Android 2.3.5 roms drain battery mush lower, and work faster. Flash it and calibrate battery after.

Battery Life: 1d 12h?

Using Faux rom (Kernal version 2.6.32.41-CM7-Faux123-v0.2.3)
I was able to get a crazy amount of life out of the G2x! Anyone else able to get some times like this?
When I first got the phone it would only get about 4 hours.
i've been on 11 hours, Nexus AOSP, and am at 85%
With SetCPU and underclocking when idle or on calls?
Is Juice Defender involved?
Exclusively on GSM?
Are Auto Sync and GPS off at all times?
Please provide context.
Sent from my LG-P999 using Tapatalk
jabhome said:
With SetCPU and underclocking when idle or on calls?
Is Juice Defender involved?
Exclusively on GSM?
Are Auto Sync and GPS off at all times?
Please provide context.
Sent from my LG-P999 using Tapatalk
Click to expand...
Click to collapse
Yes, setcpu and some UC, phone goes to min processor on screen off
Juice defender set to standard
data set to auto
auto sync gmail, gps only on demand
note today was a very, very light day of use. Yesterday I used it moderately, checking emails, maybe a call or two and several hours of music and was at 50% after about 14 hours.
Zspy1985 said:
Using Faux rom (Kernal version 2.6.32.41-CM7-Faux123-v0.2.3)
I was able to get a crazy amount of life out of the G2x! Anyone else able to get some times like this?
When I first got the phone it would only get about 4 hours.
Click to expand...
Click to collapse
I have tried virtually every ROM and kernel combination for the G2X and for my phone and usage pattern I have had the best luck when I returned back to CM7, currently RC1 without OC/UV kernels, without SetCPU/PimpMyCPU, and without Juice Defender, or any similar such programs. My gains appear to be achieved by better efficiency with the screen off. The only modification that can be responsible other than CM7 itself is that I have the phone 2G only unless I need 4g at which times I turn it on manually. I think this is the actual cause of most of my better battery life.
Recently I went 32 hours of light usage (maybe an estimated 3 hours of phone calls and 2 hours of actually performing some task in Android) and was at about 35% battery life (although I believe battery percent is totally meaningless on this or any GB Rom for the G2X). I can easily make it sun-up to sundown with moderate to heavy usage unless it involves lengthy playing 3d video games or similar cpu/video intensive tasks.
When I first had the phone (completely stock) the battery would run out before 8 hours even if I didn't use it at all. I think I was getting great battery life with the AOSP ROM (Faux) and Eaglesblood ROM without modification. I am came back to CM7 rather than those others for purely aesthetic reasons.
My conclusions are merely based upon extensive trial and error and subjective impressions. I am not an expert at anything, except perhaps backgammon, lol
2g only is not a fix in my opinion. I purchased a 4g phone for a reason. The software and drivers are still an issue. I get a solid day (12 - 16 hours) out of a single full charge with 3 email acounts checking every 30 min. Surfing the web and a little game play for fun. The screen is the biggest draw on the battery. My battery monitor shows a direct corolation to battery draw and the screen on.
jcbofkc said:
2g only is not a fix in my opinion. I purchased a 4g phone for a reason. The software and drivers are still an issue. I get a solid day (12 - 16 hours) out of a single full charge with 3 email acounts checking every 30 min. Surfing the web and a little game play for fun. The screen is the biggest draw on the battery. My battery monitor shows a direct corolation to battery draw and the screen on.
Click to expand...
Click to collapse
I understand your point, but how often are you actually using 4g. It is not necessary for syncing email or other background tasks, in fact on my phone Pandora runs the same on 2g as 4g. And when you do need the performance of 4g it is 2 clicks away, one swipe to pull down the notifications and another to toggle from 2g to 4g. It connects in about 10 seconds, for me anyway a shorter period of time than it takes me to figure out what I'm doing. 4g appears to be the biggest battery draw with screen off. If you use JuiceDefender you can program it to turn on 4g whenever particular programs are launched.
You are right about the screen it is certainly the biggest draw with screen on. I run a bike computer with gps program. I run it with screen at full bright constantly on, gps running, plus using whatever small amount of use the program uses to operate. At this rate the battery runs out before 4 hours are up.
Oddly making phone calls appears not to drain the phone at all compared to other activities. I've taken my phone of the charger and made a 1.5 hour phone call and hang up and the phone is still at 99%.
23 hours and counting on this charge...
i can get that time on my stock rom one time my phone lasted 1 day 15hrs on stock rom.
rvdangel630 said:
i can get that time on my stock rom one time my phone lasted 1 day 15hrs on stock rom.
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I have no doubt, there is nothing inherently wrong with the stock rom as long as you root it and get rid of the bloatware. Getting bad battery life is more a matter of something being wrong, instead of a particular rom being right.
I don't really understand the battery info built into Android, my uptime right now is just over 16 hours and I am at 25%. Which is good as anyone can expect with normal usage. But what is confusing is the usage breakdown, it lists most items at exactly 19%, Cell Standby, Wi-Fi, Dialer, Android System, and Phone idle. Voice calls is the only other item at 6%.
What the heck is Dialer doing with 19% of my battery!?!?
16 hours so far with 20% left.
8 hours of that was while I was sleeping.
While there was some screen-off time for the other 8 hours, the tasks I was doing included redownloading ALL of my apps manually, applying themes, configuring widgets, browsing xda, email, light texting, and a couple short calls.
I am running CM7 with stock kernal. I have like 40 widgets running (probably an exaggeration). I'm running Juice Defender set to disable data/wifi when screen turns off, and enable it for 2min every 15 min. I also have setcpu running. I increased the min to 456 instead of the default 216 because it seems to keep me from experiencing the black screen of death when I leave it higher. My screen-off profile is 456/456, and my in-call profile is 608/608.
Overall, considering that I keep all syncs set to auto so I get instant notifications of gmail and sms, and it takes all of about 3 seconds to turn the data/wifi back on when I turn the screen on, and I don't have to constantly go back and forth messing with 2g/3g. I am extremely pleased with this phone now.
Been unplugged since I woke up this morning...13H 57M and have 40% left.
That's sending many texts, tweets, and using the GPS app for my round of golf today.
currently at 2 days (actually 1d, 23h, 44m) and I still have 30% left. I would say light to moderate use.
Currently running cm7 on nightly 65 with the stock kernal. No setcpu/pimpmycpu or any juice defenders.

battery drain?

hi guys, i'm wondering if theres something wrong with me nexus s cause it drains battery really quick.
settings:
wifi - always on
background data disabled
display on lowest brightness
using go launcher
use phone couple hours a day. (maybe 3 - 4 hours on display?)
by the end of the day, im at like 10% or less battery. (unplug around 8AM and 10% around 15h later).
i went to sleep yesterday on full battery and didn't charge. woke up and i'm at 75%!
email seems to be the biggest battery drainer apart from display. i don't even use my email that often, but it always comes back in the 'running applications' list.
any way to fix?
What's your current setup? Are you running stock or a custom ROM and kernel?
A ~80% drain in 15 hours is something I have too btw, but some people get their device to last almost 2 days. Based on your usage, you should at least get around 20-24 hours.
One of the best enhancements the custom ROMs gave us, battery wise, is the Deep Idle mod. That'll make your battery drain maybe 2% over night.
You say the E-mail app is using the most battery... Maybe it's constantly checking whichever server you connect it to. The native Gmail app had battery drain issues in the very first releases of GB but those have been worked out a long time ago.
Greetz
thanks for the reply
i'm on stock rom, no root.
also im using the email app not the gmail app (not sure if it makes a difference) and i set the update interval to never.
Can you go to Settings => Battery - Click the graph and post the top 5-6 stats from that list please?
Also, which version of Gingerbread are you running? The last one? (2.3.7)
And apparently I was mistaken, it was the E-mail client and not the Gmail client that had reported battery drain issues before:
http://forum.xda-developers.com/showthread.php?t=1075887&page=2
Greetz
just went from 83% to 66% from listening to uber music for half an hour and playing 10mins of angry birds at the same time...
tempted to root my phone just forbthe battery life. lool
That's not too abnormal, gaming asks a lot of the battery.
What is stopping you from rooting and trying out new ROMs? You have Nexus S after all, the possibilites are legion
Greetz

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