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Update and FIX!
My phone is no longer draining massive amount of batt life when idle (3-5% after 7 hours of idle), android system usage is now down to 5-15% instead of 78-97% from before.
My fixes.
1. Turn off data syncing
2. Turn off wifi while on the road (so wifi doesn't constantly look for signals).
3. Clear memory
Yes, att installs a lot of bloatware that constantly update for changes.
If killing those services AND disabling data syncing doesn't help your problem, then you have a kernel problem (like myself).
If this is the case, do the following:
1. Take phone back to att and get a replacement
OR
2. Re-flash your android with the STOCK kernel found here
http://forum.xda-developers.com/showthread.php?t=1286432
OR
3. Reflash with cognition x2 (reported to solve a member's problem, I didn't try this myself).
NOTE** This will root your phone, you will NOT get the exclamation mark during boot up, but kernel counter may be at "1" after this process.
Re-flashing my phone AND applying the three tricks I mentioned above worked for me..finally my phone is no longer crippled with crappy battery life and recharging is A LOT faster now.
I must be going crazy but this sg2 is killing me. I got it from Att yesterday and the battery life has been pretty HORRIBLE. (First time android user btw).
The phone will eat up 10% of my batter life after only 90 mins of idle. I checked the battery usage and Android OS is at around 78%!!! How do I fix this problem? I downloaded OS monitor and didn't really see anything that uses a lot of CPU, except for certain files syncing from time to time (but 2-3% usage usually).
Checked with battery spy and apparently the majority of the time, the phone was hovering around 200mhz 70% of the time and not deep sleep.
It's sad to have only 1.5 hours of display time with a battery of 45% left (7 hours total time)...coming from an Iphone 3gs, this is just unacceptable. I almost flashed to the 2.3.5 firmware but noticed it's NOT compatible with ATT's version of SG2.
I see people who have a total time of 2 days AND a screen time with 3 hours with 30% battery left. I wish I can get half that!
Running on 2.3.4, can't be the infamous drainage bug right? Thought that only happens with the 2.3.3s
Wifi on, application sync on, GPS off, brightness at 25%, using live wallpaper (the windmill). No active apps on. Downloaded aim, epocrates, battery monitor, cpu spy, and os monitor..rest of the apps are stock.
Update
According to my CPU spy
For the past hour that the phone was in idle
2:20mins at 1200mhz
4:52mins at 1000mhz
8:33 at 800mhz
1:28 at 500mhz
10:11 at 200mhz
33:36 in deep sleep
Currently Android CPU usage is @ 97%, display time of 7mins(2%)
2h 30mins since last charge (97% charge)..current power is 79%. Did nothing but idling and checking battery life.
So...that's 30 mins out of the hour in which my idling cellphone was hacking the pentagon....
Also the cellphone is a tiny bit warm to the touch (not cold)
I have 35% battery life remaining and have been unplugged for nearly 11 hours. This is significantly better than what I was getting with a Thunderbolt on Verizon, where I was needing to charge after about six hours of use. 11 hours and 35% remaining isn't the best in the world, but it's only been two days. The phone needs a few days to charge and discharge to determine true battery stats and will probably get better.
Being that this is your first Android battery life will not seem great but let it settle in for a few days it should get better.
Sent from my SAMSUNG-SGH-I777 using xda premium
Used Nexus S, LG Thrill, Samsung Focus, Infuse, This is the best Android phone for battery. I have 40% left with normal use (emails, calls, music, read news) at the end of the day. Huraaaaa
Singuy1234 said:
I must be going crazy but this sg2 is killing me. I got it from Att yesterday and the battery life has been pretty HORRIBLE. (First time android user btw).
The phone will eat up 10% of my batter life after only 90 mins of idle. I checked the battery usage and Android OS is at around 78%!!! How do I fix this problem? I downloaded OS monitor and didn't really see anything that uses a lot of CPU, except for certain files syncing from time to time (but 2-3% usage usually).
Checked with battery spy and apparently the majority of the time, the phone was hovering around 200mhz 70% of the time and not deep sleep.
It's sad to have only 1.5 hours of display time with a battery of 45% left (7 hours total time)...coming from an Iphone 3gs, this is just unacceptable. I almost flashed to the 2.3.5 firmware but noticed it's NOT compatible with ATT's version of SG2.
I see people who have a total time of 2 days AND a screen time with 3 hours with 30% battery left. I wish I can get half that!
Running on 2.3.4, can't be the infamous drainage bug right? Thought that only happens with the 2.3.3s
Click to expand...
Click to collapse
If you only got the phone yesterday, its way to early to make any judgments on battery life. Battery needs at least 3-5 days to settle in and build consistent battery stats.
Also, what are you settings? Auto Brightness, Bluetooth, GPS, auto syn(exchange emal, gmail, facebook, etc). If your not using these, they should be OFF. It's easy to manually refresh email, etc.
I've seen some people reporting very high Android OS(over 50%) but still getting solid battery life.
I'm at 1hr display time, heavy texting. 72% left, been unplugged for 12hrs
no people what this guy is talking about is the android os bug. i have it too. hopefully an upgrade or different rom will fix it. my phone has been unplugged 11 hours with only 1 1/2 hour display but android os has ran for 52 minutes and now im at 32% battery life. once this bug gets worked out the battery life will be amazing.
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
I'm very happy with mine, this was the first total drain on a new battery so I know it will only get better.
Total time: 18hr 25min
Display time: 4hr 48min
I think it's the system os, not the hardware. There were a few times when the battery didn't discharge itself at 7%/hour (had it idle for 3 hours and it went down like 2%).
And yes, everything is turned off except the sync app data and wifi. There's no option to turn off 4g btw. It's just weird how sometimes it's in this mode of power drainage, and then sometimes it doesn't drain much..but most of the time, it's draining.
I seriously doubt the phone can only run 2.5 hours worth of heavy usage or 12 hours of standby (it should last days!). If this is "normal" for android, then maybe I should have a visit back to att and exchange for an iphone (and I really don't to!)
Sledutah said:
I'm very happy with mine, this was the first total drain on a new battery so I know it will only get better.
Total time: 18hr 25min
Display time: 4hr 48min
Click to expand...
Click to collapse
that is freakin incredible. i am gonna try a restore or something im down to 28% life. 1:40 display android os 1 hour.
can you please post the cpu total time in android os so i have an idea
VFO said:
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
can you please post the cpu total time in android os so i have an idea
VFO said:
I don't think that there is an android OS bug. My android OS shows as being 42% with 13hrs of moderate use and I am still at 67% battery remaining. This is by far the best battery use I have ever experienced on an android device! My cappy would not even come close to this performance and this is on stock ROM and kernel.
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I agree - as I said in the Android OS drain thread, even in "good" situations, Android OS displays way high on our systems. I think it's a reporting bug.
I dropped 2% in 5.5 hours completely idle (sitting on my shelf) last night - Android OS was at over 60%. It seems that so far for me, the higher it is, the better my battery life is.
I drop around 15-20% in 9 hours of being mostly idle at my desk at work - it's a weak-signal location so the radio eats much more battery.
One thing is that unlike first-generation GalaxyS devices and interim ones like the Infuse, the GS2 has a coulomb-counter type of battery gauge. This type of gauge sometimes needs to be calibrated with multiple charge/discharge cycles or it will misreport battery state of charge. (However, when calibrated, it's much more accurate.)
Edit: I do have some power management tweaks in the kernel I'm running, but they don't make that much off a difference except in some high-drain corner cases in my experience. I'll be releasing it sometime later this week depending on how well these antibiotics do their job.
Do i need to install a battery app to see the percentage? or we have a way?
Install this app:
http://forum.xda-developers.com/showthread.php?p=15869868#post15869868
If you see "DataTracker-FD" or "Fast Dormancy" as the top wake lock, go into dialer
dial *#*#9900#*#*
disable Fast Dormancy (FD).
By default, the Samsung Galaxy S II has Fast Dormancy support enabled. One of the goals of Fast Dormancy is to increase the battery life of a device, by limiting the amount of signaling between the phone and the cell network. But, when Fast Dormancy it is not enabled in the network and is enabled on the phone it ironically works the other way around, and actually drains more battery than before.
Click to expand...
Click to collapse
That applies to the I9100.
As far as I can tell, the I777 has FD disabled by default. (This may change once I9100 ROM ports start showing up)
Okay, charged my battery to 97%(I got a beep saying it's fully charged). Idled for the past 2 hours and 22 mins. Battery is at 86%.
According to the battery, my screen account for 2%, and the android system accounts for 97%.
This is a stock phone guys, I have no apps installed!
Entropy512 said:
One thing is that unlike first-generation GalaxyS devices and interim ones like the Infuse, the GS2 has a coulomb-counter type of battery gauge. This type of gauge sometimes needs to be calibrated with multiple charge/discharge cycles or it will misreport battery state of charge. (However, when calibrated, it's much more accurate.)
Click to expand...
Click to collapse
How do you calibrate it?
sweetboy02125 said:
Do i need to install a battery app to see the percentage? or we have a way?
Click to expand...
Click to collapse
Settings > About phone > Battery usage
WillEat4F00d said:
How do you calibrate it?
Settings > About phone > Battery usage
Click to expand...
Click to collapse
I'm talking about live battery display. I installed no lock and have no lock screen to see how many % left.
sweetboy02125 said:
I'm talking about live battery display. I installed no lock and have no lock screen to see how many % left.
Click to expand...
Click to collapse
Just search up "battery indicator" in the Market and you'll get a few to choose from.
I too got mine yesterday and started tinkering around with installing apps and such to test out all functions before I rooted it and move onto cm7 most likely. The 1 things I noticed was that the battery was NOT completely full when it was first turned on at the store so once it got a little lower after playing with it I charged it up overnight. Today the battery was WAY BETTER and was not dead yet. I have been using it NON STOP today, rebooting it, testing it, trying to root it, rebooting some more, some time using tango to test it out, watched a Netflix movie, pretty much taking full advantage of it all day. I finally decided to charge it up and use my Captivate a bit. I didn't keep track of usage and times today but I KNOW it lasted a WAY LONGER time with all I was doing with it than my Cappy. Tomorrow I will check more out possibly before putting on a rom.
So LOOOONNNNGGGG STORY short make sure you charge it up once you get it before messing with it too much and then it will LAST LONGER.
Sent from My KickAss Captivated CM7 OC'd 1.5Ghz/Undervolted
After two nights of completely draining then recharging the battery to full, the battery has gotten significantly better. I'm trying to drain it again before I go to bed tonight but I don't think I'll make it.
I played the entirety of Toy Story 3 on max brightness, and only burned 20% of the battery!
Hi all,
Since I started using Lite'ning ROM v2.1 I noticed that my battery was draining very fast.
I went to my battery use and I saw that "Android system"was using 44% of my battery. Wake time is almost 6 hours...
Is this a known bug or is there a solution to this?
Battery drain start with the Better Battery Stats app and thread .
jje
thaizz said:
Hi all,
Since I started using Lite'ning ROM v2.1 I noticed that my battery was draining very fast.
I went to my battery use and I saw that "Android system"was using 44% of my battery. Wake time is almost 6 hours...
Is this a known bug or is there a solution to this?
Click to expand...
Click to collapse
If the rom you are using is not yet a fully stable rom then it could have battery drain problems, although battery drain is usally how you use your phone. Look what apps are running when you notice your battery running down fast, as it could be one of those.
When im at work i actually only use whatsapp, and sometimes facebook while im on break. But my WiFi is off all the time then, only whatsapp and battery monitor were active. With 2.3.4 this wasn't a problem and my battery would be 60% when i came home...
Either google wakelocks and how to pin-point them, or wipe and install NO apps afterwards, run it for a day and if the same problem go to another rom till it's more stable .
What works fine in 2.3.4 has no garuntee's that it will work an experimental ICS build of any sort.
i have similar problem. my galaxy is on wanamlite 9.6, which base on LP7. after 5 hours of not intensive using, i have 65% battery left, android OS use 68% of this battery, most of time my wi-fi is off. when is on, drain battery very fast, over night even up to 20%. when i was on ginger bread it took around 6% - 8% with data and wi-fi on.
thaizz said:
When im at work i actually only use whatsapp, and sometimes facebook while im on break. But my WiFi is off all the time then, only whatsapp and battery monitor were active. With 2.3.4 this wasn't a problem and my battery would be 60% when i came home...
Click to expand...
Click to collapse
Do you have many widgets?
Especially Beautiful Widgets and Fancy Widget (moreover if you activate the meteo forecast) will constantly drain your batter in search for your position. Wifi uses less juice than 3G connections.
Happened to me back at GB 2.3.4. Battery went down to 60% in 3 hours (at the office I'm on G...so even worse cuz the battery compensates for the lack of coverage). After I removed Fancy Widgets from the screen everything went back to normal.
Don't have any widgets as far as I know, only the clock and twitter...
Today battery is know at 26% after 11 hours on battery. Process stil at 39% battery use.
I searched the web and found that there are a lot of users having this problem, especially with the Google Nexus.
http://forum.xda-developers.com/showthread.php?t=1551090
For me is same. After 15 h, I have 26% left and 78% of android os
Sent from my GT-I9100 using XDA
same Problem here.
I'm using HyDrOG3N ROM and my battery is @ ~20% after a day at work.
70-80% Android OS
[IMPI] said:
same Problem here.
I'm using HyDrOG3N ROM and my battery is @ ~20% after a day at work.
70-80% Android OS
Click to expand...
Click to collapse
HyDrOG3N ROM did the same to me bro ... change rom man lol .... my battery is alot better now im off that !
i have WanamLite v 9.8, just make yesterday clean install. first stock LPQ, then LP2, then WanamLite [email protected](latest one). in one day battery gone totally, Android OS used 79%, screen just 4%, i have one weather widget, which sync every two hours, exchange and gmail. nothing more.
You and I have the same problem. but you can try One Power Guard .
One Power Guard can help the system into a deep sleep,Reduce battery drain
downloaded from http://forum.xda-developers.com/showthread.php?t=1889740
I got a battery app installed which shows % in the top bar. It stays at 100% for a while but when it starts draining with the screen on I lose about 1% every 1-2 minutes, I think its somewhere in between, if I am taxing the cpu it more frequeent than every minute, this would give me about 2-3 hours usage which seems extremely low.
Brightness is min.
wifi/3g off.
auto sync off.
accuweather is installed (mentioned as it has a service running).
I get the drain simpley from doing things like scrolloing app drawer and checking sms.
With screen off in sleep mode battery drain is ok less than 5% in 12 hours. I have this issue confirmed on 2 different batteries.
If this is normal fine, I just want to compare to others on this.
I used to get around 1 day for heavy use ( like wifi, games, etc.) and 1.5 to 2 days for moderate use Which ROM are you using ??
Cm7 based roms use more battery than stock, cuz also their performance is a lot better.
Use uot Kitchen to get the % battery instead of an app.
Also the launcher u use affects battery. ie Go launcher drains plenty of battery.
If you can't squeeze a day's worth of battery from ur phone ur probably using it too much (how much does a laptop last on battery, seriously!)
Sent from the other side... of the screen
dxppxd said:
Cm7 based roms use more battery than stock, cuz also their performance is a lot better.
Use uot Kitchen to get the % battery instead of an app.
Also the launcher u use affects battery. ie Go launcher drains plenty of battery.
If you can't squeeze a day's worth of battery from ur phone ur probably using it too much (how much does a laptop last on battery, seriously!)
Sent from the other side... of the screen
Click to expand...
Click to collapse
you mean a day of constant use screen on or would there be periods of it sleeping?
My phone lasts more than a day mostly 3-5 days but thats mainly because its idle most of the time. However I plan to transfer some tasks to it and it seems I will need to keep the charger in during the day.
Compared to stock CM I think isnt too bad, the drain was also bad on stock with the screen on and during calls but the only reason I specified CM is that I didnt have the % meter on my stock rom which means I dont have the same comparison.
My current rom is vo-1's 30 may build. I had bugs on official nightly that vo-1's resolved (including force reboot when using market) so is the reason I am using it.
Incidently my laptop drains its battery slower than my android.
Why I read that so many use thier phones like 2 days, and I can't even get a 12 hours fair use.
I use 2G (3g drains my battery really quick), some whatsapp, some FB and some calls. Music it's only in the morning on my way to work.
I've buy a new battery from ebay, but, it's the same. Using CM 7.1 rom "The End 4.0"
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
chrcol said:
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
Click to expand...
Click to collapse
That's insane... either you DO NOT have data connection (an internet plan) or you are just a lucky guy. 2 days are barely believable but 4??? Give me a break!!!
Enviado desde mi GT-S5830 usando Tapatalk 2
chrcol said:
yeah my hunch seems right that it wasnt overall much diff to stock (that also drained superfast when screen on). IN fact during sleep it seems improved over stock.
I am over 4 days at the moment with 35% charge left. mostly sleep. It lost 3% during the time it took me to fetch the below stats. Note that calls like my earlier hunch as well seem to drain battery far more than display.
4 days 8 hours 38% left
display on 40mins used 4%
voice calls on 1hr 5mins used 33%
mobile standby 41% 4hrs 8 mins
phone idle 4days 7hrs 23%
Click to expand...
Click to collapse
Surely, you're not using WhatsApp, Facebook Messenger, handling e-mails or any of the like. If you're just using the SGA like a normal phone, OF COURSE it can give you that kind of performance. If I'm wrong, please correct me.
nanox_al said:
That's insane... either you DO NOT have data connection (an internet plan) or you are just a lucky guy. 2 days are barely believable but 4??? Give me a break!!!
Enviado desde mi GT-S5830 usando Tapatalk 2
Click to expand...
Click to collapse
He barely touched his phone Anyone can get 5-6 days like that! And being on Stock, it's extremely probable.
Well mate you can't expect battery on a cm rom. Performance and good battery isn't an option on cm. Performance is great on cm but battery, nah!
Sent from my Galaxy S IV
yeah sadly it seems noone has a comparison that I need.
Which is time needed for 1% usage whilst screen is on.
This isnt on stock tho the phone is on CM7.2 vo-1 build.
From what I see the battery life is around the same as stock.
Now I am over 5 days with 17% left. Just did a phone call and it stayed at 17%. When below 20% on stock the phone was unuseable.
abhibnl said:
Well mate you can't expect battery on a cm rom. Performance and good battery isn't an option on cm. Performance is great on cm but battery, nah!
Sent from my Galaxy S IV
Click to expand...
Click to collapse
Tru that! I'll try with a stock one. The only BIG problem, is that WIFI keeps disconnecting...
Enviado desde mi GT-S5830 usando Tapatalk 2
Removed post.
Plz i know this has been asked many many times, i have spent last 3 days on whole forum, got lot of info but really need to ask this question direct....sorry
I have S2 rooted with Siyah Kernel & R Remix Rom (latest)
My question is about the battery it seems to drain 1-2% every 4-5min whilst am USING, is that normal?? Everything will be off apart from Wifi or Data...just surfing or whatsapp
When phone is sleep (at night 6-8 hr) it only uses 3-4 %, is that normal? Mostly everything off
I fully charged yesterday around 5pm, hardly used, but seems to drain a lot whilst in use...driving me crazy. Need to know is it the battery weak or something else
Plz see attach screen....
bbs
salimsd said:
Plz i know this has been asked many many times, i have spent last 3 days on whole forum, got lot of info but really need to ask this question direct....sorry
I have S2 rooted with Siyah Kernel & R Remix Rom (latest)
My question is about the battery it seems to drain 1-2% every 4-5min whilst am USING, is that normal?? Everything will be off apart from Wifi or Data...just surfing or whatsapp
When phone is sleep (at night 6-8 hr) it only uses 3-4 %, is that normal? Mostly everything off
I fully charged yesterday around 5pm, hardly used, but seems to drain a lot whilst in use...driving me crazy. Need to know is it the battery weak or something else
Plz see attach screen....
Click to expand...
Click to collapse
Install BetterBatterystats.
After some time check for alarms/wakelocks.
Read detailed How-to and FAQ on link i posted up..
Thanks but anyone care to explain from attach image if that's normal or ??
If you use your phone for less CPU intensive actions, then change governor to "Conservative".
salimsd said:
Plz i know this has been asked many many times, i have spent last 3 days on whole forum, got lot of info but really need to ask this question direct....sorry
I have S2 rooted with Siyah Kernel & R Remix Rom (latest)
My question is about the battery it seems to drain 1-2% every 4-5min whilst am USING, is that normal?? Everything will be off apart from Wifi or Data...just surfing or whatsapp
When phone is sleep (at night 6-8 hr) it only uses 3-4 %, is that normal? Mostly everything off
I fully charged yesterday around 5pm, hardly used, but seems to drain a lot whilst in use...driving me crazy. Need to know is it the battery weak or something else
Plz see attach screen....
Click to expand...
Click to collapse
It's normal.. You need to give it at least 3 battery cycles before you judge the battery life..
Sent from my Nexus 7 using xda premium
Hello guys,
I'm using cm 11 stable (latest) official for my i9300 with boeffla kernel 2.12 cm 11 NG. The system is quite stable as i'm using "Battery saving" profile ie. zzmoove/ battery yank.
The problem is that the system runs very smooth usually except the games. The games on the other hand runs relatively well but all of 'em cause huge battery drain, say for example after running asphalt 8 for 8-10 mins the battery goes down from 80 to 70 or 68%. Even google music drains like hell, too. Same things happened when i was in 5.1.1 roms. I also have powernap, amplify and greenify installed. Other than games the system sleeps well and drains very li'l.
And it should be noted that my stock battery is 2 years old.
So, is it a problem concerning me only, or every one faces this issue? should i go for a new battery?
Anyone plz enlighten me regarding the issue.
Thanks in advance.
Gaming drain seems abnormal
Never tried asphalt 8 but playing NFS:Most Wanted or other battery consuming offline and online games will give me around 2~2 and a half hours of gameplay from 100% so 10 mins for 10% battery is quite abnormal
Thank u very much.. So can it be a battery issue? what do u suggest, should i go for a new battery?
How old is your battery? Because in my device (2 year old battery), i've also encounter battery drain. So I decided to buy new one. As of now, everything seems fine.
Sorry bad english.
thezibrail said:
Thank u very much.. So can it be a battery issue? what do u suggest, should i go for a new battery?
Click to expand...
Click to collapse
Mine is also stock battery 2 years old and I'm no battery expert but I can also feel my battery degrading.
So yours might really be battery issue and it degrades faster due to your usage pattern?