Related
I did with my 2.1 same as 1.6. removed unwanted apps. using taskkiller and autorun killer same way. holding wifi, gps, and bluetooth off. everything i do is same. I'm not using live wallpapers.
With 1.6 there was no problem keeping phone uncharged for 4 days.
With 2.1 it's like one day or little bit more.
What can i do to make battery not drawn so quickly ???
You shouldent use a taskkiller on 2.1 since it does that by itself. Using taskkiller will make your phone to force start apps again to shut down.
Sent from my U20i using XDA App
4 days uncharged!?!?
My phones battery runs approx. 10 hrs standby + 4 hrs of use (screen on) on a full charge..
I also think that there are some battery issues.. On 1.6 it would last about 14-16 hours. Enough to use it during day and keep it charging overnight. Now I have to charge it twice per day Looking at the built in what uses battery app it says that the major draws are phone not in use (30%), screen (40%) and wireless (15%).
Any suggestions on what app i can use to micro manage what is using battery even further?
Found a program http://ziyang.eecs.umich.edu/projects/powertutor/UMLogger-release-signed.apk that does exactly what i wanted. Shows battery usage per system wise (lcd, wifi, 3g, etc) and can also get down to real details, showing battery usage per process. This way you can determine what is hogging that battery.
I left my mini in standby mode during the night and in 10 hours it only used 5% of the battery indicator. in theory I have 200 hours in standby... dont have any issue with battery myself.
In daytime use the battery goes way faster but still can do a day without charging with moderate use (3g, wi-fi enabled)
I have all the auto-syncs off and i do use the task killer but it is set to kill himself 2 when i hit the kill button.
hope this helps
Be careful, to use a task killer or similar on 2.1 maybe worse than you don't use it... it isn't recomended from 2.0 and above to use a task killer, because of the own task administrator of Android... Remember that this operative system "learns" your most used apps... the less ones... and admins the process, so be patient and wait some more days and some reboots...
Certainly I have to say that I realize that my batt is a little bit longer... but let's wait to make a real feedback...
i'm using taskkiller because of some programs like "Quick System Info" ver 1.4.5. I can't find any other way to close this app. I can remove icons from notification bar. but app is still running. Any ideas for that ?
On standby for 9 hours i'm getting 30% less battery.
Is android 2.1 supposed to use less battery anyway ? seriously considering going back to 1.6
Mine has been running for 20 hours now since fully charged and still has 54% of the battery. This is with 2h 15mins out of standby watching Youtube videos and talking on the phone.
Wifi is always on, Bluetooth is also always on. And yes, 2.1 does better battery conservancy for me: with 1.6 sometimes the phone wouldn't go into standby thus killing e.g. 30% of the battery over night doing nothing. I haven't noticed anything similar since I upgraded to 2.1.
I only use advanced task killer rarely if I want to kill a running process. No auto-kills...
P.S. Also I only use 2G.
Skype also eats a lot of battery. i cant find a way to turn it off other than with a task killer
O skype, if you go to 3rt. tab (I think its "My info".. My system is not in english) menu button will show an opt to disconnect, that completly leave app.
its fine to use task killer, JUST end tasks yourself with the end all button.
CERTAINLY dont put auto-kill processes or ur battery will die, hope it helps.
post your average battery life...i want some tips from the ones who have best battery lifes..
to get the best juice out of ur o1..
use devoif froyo-final..
i got about 3 and a half battery..
3 and a half days ?? are you kidding??
My battery only lasts maybe up to 12 hours... if I'm lucky
Tried removing widgets, using a batter saver... tried charging the battery, deleting the battery stats file, discharging it recharging it... shortened display on time, turned down volumes
I don't know what's up? I've tried wiping and reinstalling ROM's... I don't even use it as much as I'd like because of the battery life
Optimus V (VM670)
AOSPmod 20110601
16gb sdcard w/1gb ext4 partition
Don't use battery savers, they increase it drain...
Mine on devoid froyo only lasts one day..tried wiping battery stats many times..but same result..
Mine is on devoid.final with franco.kernel v16.1, and I get about one and a half day of battery on average use. I play at times, send quite a number of texts and make a call once or twice a day. I developed the habit of bringing my USB cable to charge my phone at work now. :/
my phone doesnt last even for about 18 hours if i am using it on average basis by which i mean 1 hour gaming...2 hours of time pass by simply changing settings and all...but i do text quite often and have around 100 apps installed on my phone...will it help if i keep only which are necessary and use titanium backup for others which i only use once in a while.....
my last hopes are on froyo final and the above mentioned solution...i am going to try it soon...
In my experience most of the battery takes 3G mode, especially when active HSDPA. If I am using only 2G mode phone can withstand more than 2 days, which is a good result, but in the 3G just 1,5 day. Remember that at the time did not use the Internet to disable the Internet connection, it should help you.
20-24 hours.
I'm using nessy right now and getting the best battery.
I call a lot so this is the right rom for me after around two to three hours of talk I'm still left with some juice. Turn my sync and use apn off application , least screen display brightness got a widget for turning it high when I need it. Use mostly wifi for internet.
on CM7... 12 hours and it's dead. without wifi
well my battery life has improved by these steps:
1. Wiped all my data,cache,battery stats ,everything(though i don't think this is necessary).
2.Flashed froyo final.(I am now on devoid forever and will test my battery life on it)
3. Checked 2g networks only in settings-networks-mobile networks.(Dunno how much that helped me )
4.Install only apps which are necessary (i have around 50 installed)..and the rest you can restore via titanium when you need it....
and now my phone eats just around 1% per hour of idle time....(it's improved)
I get around 2 days backup on Devoid final with franco 16.1. Only 2G, 1-2 hours calls, sms, bit of wifi tethering, Browsing on edge for 1-2 hours,facebook, and no gaming
In Cm7 maximum around 20hours that too without wifi, or any fancy stuff. Just 30minutes browsing on 2g.
sajjan said:
well my battery life has improved by these steps:
1. Wioed all my data,cache,battery stats ,everything(though i don't think this is necessary).
2.Flashed froyo final.(I am now on devoid forever and will test my battery life on it)
3. Checked 2g networks only in settings-networks-mobile networks.(Dunno how much that helped me )
4.Install only apps which are necessary (i have around 50 installed)..and the rest you can restore via titanium when you need it....
and now my phone eats just around 1% per hour of idle time....(it's improved)
and yeah install watchdog task manager to know if some app is using excess battery..
Click to expand...
Click to collapse
Dude uninstall..that watchdog thing it runs in the background and eats up battery... don't use any kind of app..that is so called battery saver.. they should rather be called battery eaters... and yeah it is always recommended.. to wipe cache.. that saves battery..
Sent from my LG-P500 using XDA App
IMO it is hard to compare battery use when the phone is active because it depends on too many factors: widgets, wi-fi usage, 3g/2g, app, brightness, etc.
What can I tell is that my phone in sleep use 0.6315% battery/hour
Anyhow I charge my phone every day because I play a lot with it.
I'm using OpenOptimus 1.172.1 and franco's kernel 16.1
My routine usage goes like this: 6am to 7pm (13h) plays non stop music (fmradio or poweramp). No wifi no data, 2g only.
During that time, I use 3g data for browsing, chat, emails and youtubing for a couple of hours more or less
7pm to 10pm: 2g only, no data, wifi on. I do a few browsing around 30min top, synch stuff with dropbox etc
Finally after 16-17h of usage it has around 30% - 40% of juice left in it. Then I put it for charge, go to sleep and start over again next day
On weekends it's a completely different story. Especially when i'm fooling around with GB roms i might have to charge it 2 times a day
My battery
Hi
My battery lasted 2 days on CyanogenMod7
Now that I have Gingerbread 2.3.4 by andy572, it lasts 4 days on a minimal usage
hosseinriasati said:
Hi
My battery lasted 2 days on CyanogenMod7
Now that I have Gingerbread 2.3.4 by andy572, it lasts 4 days on a minimal usage
Click to expand...
Click to collapse
That's weird. I flashed and reflashed andy's rom two times and I had the same issue. 10% battery drain every 2 hours. IN IDLE.
That meant my phone was dead in 20h in idle mode, 12-14 hours if used for texting and calls.
I am also using Andy's rom and kernel, with a normal use, daily 30-40 minutes with wifi on, 30-40 minutes talk and 9-10 sms. I mention that 3g is off data is usually off so since the last full recharge passed 3 days and i am still at 28%. performance is also great. Love this rom
Sent from my LG-P500 using XDA App
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!
I have a stock SGS2 with a lot of widgets running. I use BetterBatteryStats and have removed the high power usage apps.
Past few days, the phone uses a lot of battery at night. Yesterday it had 32% battery and when i woke up it was dead.
Are the rest of you also seeing this much battery consumption every night ?
Funnily enough I've had exactly the same issue since about a week ago. Even when I take it off charge it's almost immediately down to around 80%. It's lasting around 4-5 hours, even when I'm not using the phone much, plus it gets really hot.
A couple of times Social Hub has appeared high up on the list of battery draining apps, although I don't use it. It doesn't always show up though. I switched to the CF-Root kernel and started using GO Launcher EX recently and wondered if that (or one of it's addon widgets) could be the cause.
It's really bugging me now!
I gave up with the stock S2. Rooted it and flashed MIUI to it along with the Siyah Kernel. Now it uses only 6% for the whole night. Battery usage is so much better now.
People having issues with battery should try the siyah kernel and change governors (unless some app was draining your battery)
yeah, actually some new users will experience battery problem. however, some says that when time goes by, the problem eventually sorted out itself.
i am guessing the phone need "warm up time"
I had the same problem with stock rom. you have to remove the preinstalled useless samsung apps. then battery consumption is better.
i am now on cm7. everything is working and around 8% per night with a lot of background processes (tasker, lbe, scheduled titanium backup).
Don't always turn on wifi or data unless necessary.Turn off background sync.This should help a lot even u r using stock rom.Kill tasks with built-in task manager.Make sure useless apps are not running in background.
With these tips,my s2 with rooted stock rom and stock kernel only consumed 3% of battery all night .
i keep wifi or gprs on for instant messaging needs. The Siyah kernel and the lulz governor give amazing battery life because process runs at lower clocks instead of jumping to 1200 unnecessarily.
The stock kernels aren't too bad in my experience.
I think you will find your battery drain will be caused by rogue apps before the kernel.
Edit: why have this phone if your going to turn off gsm and data etc. May aswel turn the phone right off and have zero drain overnight.
A drain of 1-3% per hour with everything turned on is normal for me.
Sent from my GT-I9100 using XDA App
Hi guys, I have a problem with cm10 based rom (PA2.53), cpu doesn't go into deep sleep when it is supposed to. It does go in deep sleep, but for very short lenghts of time, during the night (with quiet time enabled and jd plus) i lost more than 10%/hr (from 100 to 20 in little more than 6 hours idle), I checked cpu spy and of 6 hours idle little more than 1 was in deep sleep and 5 at minimun clock freq (134), there's no app keeping the phone up as battery was drained for 70% by android os (which also shows cpu awake for more than 5hrs).
Any suggestion to fix this? I know battery drain is "supposed" to be high on jb, but isn't over 10%/hr in idle a little too much?
Using mesa 2.3, smartassV2, min 134 max 1200, jd plus, startup manager and fast dormany tweaks in init.d...any suggestions to fix this problem?
Rudjgaard said:
Hi guys, I have a problem with cm10 based rom (PA2.53), cpu doesn't go into deep sleep when it is supposed to. It does go in deep sleep, but for very short lenghts of time, during the night (with quiet time enabled and jd plus) i lost more than 10%/hr (from 100 to 20 in little more than 6 hours idle), I checked cpu spy and of 6 hours idle little more than 1 was in deep sleep and 5 at minimun clock freq (134), there's no app keeping the phone up as battery was drained for 70% by android os (which also shows cpu awake for more than 5hrs).
Any suggestion to fix this? I know battery drain is "supposed" to be high on jb, but isn't over 10%/hr in idle a little too much?
Using mesa 2.3, smartassV2, min 134 max 1200, jd plus, startup manager and fast dormany tweaks in init.d...any suggestions to fix this problem?
Click to expand...
Click to collapse
PIMP MY ROM.search for it on google.and use aroma version,it has more options.works perfectly on cm10.lagless and after night got 1% battery drained.
Sent from my Xperia Mini using xda premium
I already had that, the fast dormancy tweaks come from there, also installed every battery tweak pmr has to offer, but still draining like hell. I checked better battery stats and there are no unusual wakelocks...
Rudjgaard said:
I already had that, the fast dormancy tweaks come from there, also installed every battery tweak pmr has to offer, but still draining like hell. I checked better battery stats and there are no unusual wakelocks...
Click to expand...
Click to collapse
you could try my tweak package?
maybe it'll help.....
http://forum.xda-developers.com/showthread.php?t=1931487
I tried a last resort solution and it seems to be working (not too stable but better than before) I completely discharged the phone, recharged it fully while shut down and battery consumption seems to have improved. I lost 6% right away when unplugged it from charger within 30minutes, but now i have 12.30h running on battery and it's down to 84%, so aside form the 6% that drained immediately from 100 to 94 the rest seems to be keeping up pretty well. I'll keep an eye on it though as it seems to vary from time to time...In two days new pa and new fxp should be out, I'll see if that makes anything better...
Thanks for reading and for the replies so far
I think i found out what is causing the high battery drainage, it's the mobile data connection. For some reason JD (or the system) can't shut it down when phone is at sleep. Last night i switched mobile data off and in the morning i had almost less than 0.5% drainage, as soon as i turned it back on battery percentage started dropping at sight...
Battery Calibration
Download BatteryCallibration app from the market and follow the steps given there..
Helps me everytime i have a battery issue...
HIT THANKS IF THIS HELPED
Thanks for suggestion but that doesn't help, i used zepps die hard calibrator before, but it's not a battery problem. Random processes at random times will keep the cpu running when it's supposed to sleep, that's what's draining the battery..
Perhaps an app is polling the net too often, facebook anyone?
Xperia mini (smultron), CM10 150, Xtended kernel + rom
No i have app control which prevents any unwanted things to start-up automatically (and fb is on the no-fly list )
I think i kinda sorted it out, what causes the problem is thethering. When i disconnect tethering according to phone wifi and data are off, but in truth they keep staying on. I shut tether off and can still see my hotspot from pc even if wifi is completely off on the phone! So it's wifi and data which keep staying awake (even with screen of for long periods of time) and slowly drains the juices.