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
I know battery life has been discussed quite a bit, but Ive found most, if not all, discussions are "runtime" battery life, not standby..
For me Standby is important as I dont use the TP that much, but when I do I dont want to see the battery a 25% or lower!..
Currently webos 3.0.4 seams to drain around 5-7%/day, whereas Android CM7Alpha3.5, and Xron b2.1 appear to be about 20%!!
I know this is still alpha, but this , and only this, issue is stopping me from switching completely to android...
Any comments??
ps Dont get me wrong I know this is alpha, and the CM & Xron guys have done WONDERFUL things, just thought Id ask..
Anyone tried the new Miui build?? is it based on CM7?
Will CM9 be better considering its Android 4.0 "built for tablets?"
thanks all!
i mean, basic phone stuff still applies here. turn off wifi, etc. certain apps will kill your battery more than others (ie scrabble), even when idle.
idk, i find that it's easier to just shut it down completely if you know you're not going to use it for 8hrs or longer. i leave my tablet on all day when i leave for work and come home to see it about 10% lower, but i don't pay much attention to it.
I been at work all day long 10:30am - 9:00pm... I didnt have time to use my TP at all during any of my breaks so it was in standby the entire time.
When i finally got home and turned on my TP it was at 92% out of the 99% it was at in the AM.
Running Xron 2.2, i cut it down to 130mb, not a single problem yet since I installed it.
Hi guys,
good comments!
@thekillingtree : Yeah powering down is one option, but the beauty of a tablet, you keep it on standby...
@jzen : mm thats not bad, however 11hrs=7%, therefore thats about 15% over 24hrs...
Yes I know "things will" drain the battery when in standby when running in the background, i suppose Im comparing it to things like an ipad (less than 1%/day drain in standby), webos which is ~5%/day in standby and even the NookColor (v1) can go for 2-3 weeks in standby..
anyway, its still alpha for me Im hoping standby time will improve when it goes beta etc..
for now I'll simply keep it "topped" up!
Angelo
i'm genuinely curious how long the standby life will be. i fully charged my tp this afternoon and i'll see later how low it is.
i never really cared since i charge it every day or two.
Firstly you have to remember that the battery status monitor in android is all over the place and can never be accurately relied upon.
Flatten the battery (yes, I know it's bad practice!), then fully charge, wipe battery stats and leave alone until battery is flat again.
Then you get definative battery life, for your device/battery combo.
I know that when im done using the touchpad for a while.... i turn off my wifi.
the battery barely drops when wifi is turned off.
Idea: i wonder if installing juice defender will solve this issue.
--> Juice defender turns off radios and preserves battery life on my android
phone it might do the same on the touchpad. Just a thought i havent
tried it yet
good idea!
Actually yeah, juice defender worked a treat on my htc legend.. might help with the cm7 rom too
Sounds to me like it is not going into a deep sleep. I charged my tp fully last night, went to bed and woke up with 65%. I know this was an issue for cm7 and miui on my Droid x.
asantaga said:
Currently webos 3.0.4 seams to drain around 5-7%/day, whereas Android CM7Alpha3.5, and Xron b2.1 appear to be about 20%!!
Click to expand...
Click to collapse
For this to be a meaningful comparison, you need to be running the same apps on webOS as you are on Android, and understand how the apps work on each OS (e.g., background processes, network usage, etc.).
The Touchpad has a 6000 mAh battery. According to Battery Monitor Widget (in Android), my TP discharges at about 40 mA while idling with the screen turned off. This is with wifi enabled and whatever background processes are running for the 150 or so user apps that are installed. If I were to just leave the tablet alone, it will drain the battery of 40 mAh in one hour. In 24 hours, it will have drained 960 mAh. 960 mAh out of 6000 mAh is 16%, so that's seems about right.
It's been a while since I booted up webOS, but I recall that the Govnah app will record battery drain as well, so you can see if the current is lower or higher with webOS.
Well recently I bought the Beast S3.
Now I installed this first Kernel - CF-Root-SGS3-v6.4
And CM9 rom, was working great though there's one problem the damn battery drain is like being raped evey 5-10 mins if not less I loose 1-2% battery.
Now I though it might be the Kernel so I switched to Siyah-s3-v1.5.3-CWM, no go still the same result.
I changed my Rom to CM10, same result.
Here's a Screenie of my device (In Attachments)
Could you help out a little? I've checked and not sure where is the issue, and I understand that super huge screen consumes allot of power but even if I set brightness to 0-25% I get the same result...
Most battery issues are caused by installed user apps. Install Cpu Spy for cpu deep sleep issues and Better Battery Statts for locating apps that show unusual activity`s and drain the battery.
UD3R said:
the damn battery drain is like being raped evey 5-10 mins if not less I loose 1-2% battery.
Click to expand...
Click to collapse
This battery drain percentage looks normal to me.
Sometimes I lose 5% without doing anything, even if I have a perfectly cleaned rom.
hi guys,
i would like to get some help,
i have a galaxy s2 device with a battery of 2450 mah
the device battery consumption is very high (in my opinion)
and i dont know why
ive installed lately the jelly bean official CM nightly ROM
and the comsuming was a little less
when ive installed the 28/9 version it comsumed 15% all day when the device wasnt active at all (no calls, internet use and other stuff)
after it, ive upgrated it to newer ROMS of the nightly releases and the consumption went too high - around 70% battery consumption per day (with no major use of the device)
also ive installed a new moden version but the consumption havent changed
the brightness of the screen is around 30%
how i can make it consume 15% per day again?
thanks!
Hey. So first thing fo you to do is install BetterBatteryStats http://forum.xda-developers.com/showthread.php?t=1179809 after one cycle you should see whats is consuming your battery most and the other thing to do is disable Google Now. Ok you have something to do for now tell me how it goes mate.
http://forum.xda-developers.com/showthread.php?t=1909996
Try the things mention in the post.
Please show mercy,
I already googled and searched xda for some time now, but I couldnt find any satisfying answer.
I own a Optimus 3D (p920), which is now rooted, has wkpark and cwm. Tried PACMAN and nameless KitKat 4.4.4.
Its fun !!! ^^
I dont have gapps, no games, no email push apps etc. Just the clean ROM flashed.
That leads to my question my question :
I learned that the wkpark bootloader (sometimes) drains a lot of battery, especially on flashing a ROM.
I learned that you shall flash a ROM only above 70%. Sometimes after a flash I have 12% left, sometimes only exactly 1 %.
Sometimes even a simple restart takes my battery from 60% to 20%.
Google wasnt a big help here and Im not a coder/programmer.
Id like to understand what exactly is going on, if there would be any advices I could follow or if there is even a solution out there, that I might have missed.
Noob friendly answers welcome.
Had to add this seperatly :
While sometimes a restart/re-flash made my battery down from 60% to 20%...just like today...it jumped from 60% to 20% and is now on 20% since 5 hours already...on normal use...which is not normal.
If I attach the power-cable, it jumps from 20% to 44% and starts loading. If its at 1% and I attach the powe-cable, it will start charging at 1 %.
And I thought battery (re)calibration is a myth ?
What is it that I dont (want to) understan here ?