Database Users

Battery life on custom roms

Hey guys im keen to know your experiences with the various custom roms out there.. I have flashed villianrom today as my first custom along with various kernals but have had constant drain issues..
Looking at my battery awake stats it seems as if it never sleeps :-(
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JAG131990 said:
Hey guys im keen to know your experiences with the various custom roms out there.. I have flashed villianrom today as my first custom along with various kernals but have had constant drain issues..
Looking at my battery awake stats it seems as if it never sleeps :-(
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Screenshots showing battery usage and more importantly screen on time.

I don't have Villian ROM but from reading the comments on thst thread this is one of the best as regards battery drain so im amazed you experience high drain.
I run Cognition and am happy with this.

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You can see it just gettin eaten away screen off doesnt stop drain note the awake vs.screentime i have tried 4 kernals to no avail
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Put on watchdog and let it run in the back ground and see if it's any app or widget misbehaving.

Thanks trying now
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Just read in another thread that having motion sensor enabled causes this.
In my case ... Absolutely confirmed!
Very weird
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JAG131990 said:
Just read in another thread that having motion sensor enabled causes this.
In my case ... Absolutely confirmed!
Very weird
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
That is very very weird!!

I was on Villain too,1.4 to be exact...drains as well,now on Litening 2.2,after resetting batt stats,best so far screen on time almost 5 hours, using mostly wifi..but with 3G,I get around 4hr 30mins...I usually leave my wifi on all the time at home,and switch on data only when I leave...

literom 2.2 doubled my battery life (no exageration) coming from stock rom. impressive.

Bus Driver said:
I was on Villain too,1.4 to be exact...drains as well,now on Litening 2.2,after resetting batt stats,best so far screen on time almost 5 hours, using mostly wifi..but with 3G,I get around 4hr 30mins...I usually leave my wifi on all the time at home,and switch on data only when I leave...
Click to expand...
Click to collapse
That sounds really poor performance..
Sent from my GT-I9100 using Tapatalk

Some extended idling:
Cognition 1.13 with CF KG1 Kernel, Phone undervolted as in screenshot + GPU @ 750mV for both states.
Android OS still taking 1h15m CPU time in that screenshot, which, in my experience in this case is I *think* because of Skype running all the time there. Also Trillian connected to multiple services running constantly with Wifi.

I'm using Cognition 1.15 with modified 1.4 ninmphetamine kernel, very good battery life so far! (probably the best compared to villainrom and litening rom for me)

Having fixed my awake issue my battery life is reasonable but i expected betted with villainrom + nenphetamine custom + undervolt.
We need to guage some good comparisons id like to get an extended idle test dont know if i can leave my phone for that long. LOL
Btw How did you undervolt gpu?
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I would stay away from these newer kernels like Nephetamine until they actually mature. I alslo tried some other custom kernels and they kinda drained the battery way more. So I'm sticking to a plain kernel like CF for the moment. Also seems better to stick to the normal ondemand governor.
Undervolting GPU via Tegrak Ultimate, it's worth it imho, especially since I basically shaved off 25% voltage without any issues.

JAG131990 said:
That sounds really poor performance..
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Click to expand...
Click to collapse
How many hours are you getting if 4:30 and 5 hours screen display on time is poor performance? Please enlighten me...

I too flashed Villain rom (KF2) 2 days back and after flashing I get more battery drain compared to KF2 stock rom. android os is consuming 60% of battery.
BTW How can i see that graph thats shown above? is there any app for that

galaxyII said:
I too flashed Villain rom (KF2) 2 days back and after flashing I get more battery drain compared to KF2 stock rom. android os is consuming 60% of battery.
BTW How can i see that graph thats shown above? is there any app for that
Click to expand...
Click to collapse
Just tap on the grey part,where it states the hours and minutes on battery, the graph will be expanded and shown...

I will post screenshots i took this morning 9 hours standby wifi off, background data off, auto sync off, everything else on, stock rom KF3, no freezing of anything
the result?
1%!! loss over 8.5 hours

[POLL]Battery life in JB is.....

Please post your battery life experience in here. I am doing this because if Samsung does come here from time to time, let us show them how many users experience poor battery life with the JB rom. Also, let us ignore wipes or full resets since people may receive this update via OTA or Kies and they should not have to do a full wipe or reset to get a good battery life.

No doubt it is better.

Why make another thread....
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It's definitely about 30% worse.
Common, do you really think project butter is free?

parhelion69 said:
It's definitely about 30% worse.
Common, do you really think project butter is free?
Click to expand...
Click to collapse
Yeah I think because my batter life is so damn good.

jb
mine is better than ics in jb. using android revolution hd 12.

If i fully charge mine before i go to, then by the time i wake up after about 7 hours, ive only lost 2% battery power.
Thats with data still so not in flight mode or with the phone turned off.
Sent from my GT-I9300 using xda premium

I've tried litterally every JB leak so far inckuding the official ones.
I got sick of having bad battery life on all of them, no matter if I wiped etc.
So two weeks ago I put the very first stock rom on my phone (dated may!), and let it run auto updates from my carrier.
It ended up on LH3 and the battery life is night and day better. I'm getting over 24 hours easy now with what I consider to be decent use -phone calls, lots of facebook, whatsapp, browsing and at least 90 mins of mp3 playback each day. I leave wifi, 3g and BT one the whole time and it always gets over 24 hours.
Today though I flashed the newest UK Hutchison 3G official JB as it's my carrier. I'm going to see how this goes but I'm not expecting it to keep up with ICS. I'll be very happy if it does though.

It was terrible on JB for me (less than 24 hours of moderate use).
I disabled google now and installed juice defender and I get at least 2 days and maybe 3 if lighter use.

Swedish ROM is by far the best in battery life.
Sent from my GT-I9300 using Tapatalk 2

Battery life for keeps getting better with each jellybean update. Currently on omega v28 with perseus kernel and battery life is the best its ever been. 24hrs easily with 5± hrs screen time.

On Jellybean i get 6hrs on screen at 25% brightness and 16hrs idle with Wi-Fi off during sleep and whilst using mobile data
WanamLite 4.0, Siyah 1.7RC1 -100mv CPU and -100/-125mv GPU coupled with dualcore only at 1.2Ghz and touch-boost for 600Mhz at results are shown above and below whilst remaining lag free
Other tweaks: EXT4 optimizations, Multi-tasking fix, SQLite tweaks, SD card cache increase for internal&external to help maintain speed

16 hours max and my battery is empty, crazy...

mdfpido said:
Swedish ROM is by far the best in battery life.
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Click to expand...
Click to collapse
Try switching radio?

Sometimes, battery need more than 2days to settle down. It took me 1week to start seeing my battery performing on par with ICS rom.
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With Google Now: Very bad.
Without Google Now: As good as ICS (very good)
On Polish ROM

monoespacial said:
With Google Now: Very bad.
Without Google Now: As good as ICS (very good)
On Polish ROM
Click to expand...
Click to collapse
Agreed.
People complaining about battery life: Disable Google Now and untick every option in Maps!
You will see a huge difference.

Black Dawg Down said:
Agreed.
People complaining about battery life: Disable Google Now and untick every option in Maps!
You will see a huge difference.
Click to expand...
Click to collapse
If you disable Google Now it just disables the notifications that it gives you and you can still make searches right?

Ics was much better
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Disabled Google Now, and all maps options.
Battery life is epically rubbish, as expected.
Back to ICS I go.

How to get epic battery life?

Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Because you use the phone and the others no! I have similar battery life. I get 3 hours screen on time.
Try cyanogenmod. For me is the best rom.

Heres a few things that help me:
make sure if your on a ROM that has it to disable cell broadcasts in wireless & network settings.
In Google sync settings, uncheck everything you don't use or can manually sync. The only things I leave checked are gmail, contacts & calendar.
If you've opened maps, make sure to back all the way out of it & swipe it away from your recent tasks screen. Better yet, if you don't need it, uninstall it or use an alternative like mapquest app.
If you don't use Google talk, open it and sign out or uninstall it.
Try not to overdo it with widgets on your home screens. I mean a few is cool, but when u have 5 screens all jam packed with various widgets constantly running & syncing...
I know you said you've tried various kernels, but I honestly found that I got the best screen on time with Franco r86 kernel (just over 4hrs). I'm not a huge kernel fan so I haven't really tried others, but I was only getting just over 3 hrs on stock.
Sent from my Nexus 4 using xda app-developers app

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
I use the greenify app to hibernate facebook and words with friends it helps somewhat on battery life

I recently discovered that if I reduce the brightness down to 50% (which is still very BRIGHT), I can get an extra 30% battery life.
Simple, and yet, effective

Turn the brightness down - even 10pct is plenty bright indoors.
Sent from my Nexus 4 using xda app-developers app

Flash matrix kernel
Sent from my 3rd Nexus 4 using Tapatalk 2

lowrider262 said:
Heres a few things that help me:
make sure if your on a ROM that has it to disable cell broadcasts in wireless & network settings.
In Google sync settings, uncheck everything you don't use or can manually sync. The only things I leave checked are gmail, contacts & calendar.
If you've opened maps, make sure to back all the way out of it & swipe it away from your recent tasks screen. Better yet, if you don't need it, uninstall it or use an alternative like mapquest app.
If you don't use Google talk, open it and sign out or uninstall it.
Try not to overdo it with widgets on your home screens. I mean a few is cool, but when u have 5 screens all jam packed with various widgets constantly running & syncing...
I know you said you've tried various kernels, but I honestly found that I got the best screen on time with Franco r86 kernel (just over 4hrs). I'm not a huge kernel fan so I haven't really tried others, but I was only getting just over 3 hrs on stock.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Thanks, I have now signed out of google talk. I only have one widget at the moment and that's the clock widget. It's annoying that everyone can get 3 or 4 hours screen on time and I only get 2

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Try Eugene's CPU Sleeper from the market. It turns off all but one of your cores while the screen is off to minimize cpu usage. On CM nightly with stock kernel I got 34 hours with 17% remaining and 2.5 hours screen on time til I ended up charging my phone. I run my CPU at 1350 max / 384 min.
Make sure under sound settings all the sound on touch, keypad, etc are all turned off. Each time your phone ticks a sound it uses battery. Also bright display backgrounds will use more battery.
I only sync chrome, calendar and instant upload
good luck

harro3 said:
Hey guys,
I see some people here have AMAZING battery life. Some people are getting 4+ hours screen on time with a single charge.
I only get around 2 - 2.5 hours screen on time. Which is good, but not as good as other people.
I am using the latest Paranoid Android ROM, and I have tried many different kernels but battery life is the same with all of them. I tried undervolting, still the same battery life.
All location/gps settings are OFF. The only syncing I have is Facebook syncing every 4 hours. I checked the battery stats, and everything is normal. I checked Better Battery Stats and everything is normal too, no unusual wakelocks or anything like that.
I checked my cpu bin in terminal, and it has been binned as a 'FASTER' cpu.
I have very good signal all the time. Always use WiFi, never mobile data. Bluetooth, NFC are OFF, and brightness is autobrightness.
So after all this, why am I not getting amazing battery life like others?
Thank you!
Click to expand...
Click to collapse
Clock down your device
Use conservative cpu governor or something like that,
Undervolt if necessary
Have a low brightness screen if it's possible
Sent from my Nexus 4

Flash Franco's kernel.
http://forum.xda-developers.com/showthread.php?t=2002782
Sent from my Nexus 4 using xda premium

You can also try this, it takes a few days to "learn" your routine then it supposedly starts saving battery. I'm currently in day 2 of learning mode so I don't know for sure how well it works. But it seems to be getting good reviews so far...
https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my Nexus 4 using xda app-developers app

lowrider262 said:
You can also try this, it takes a few days to "learn" your routine then it supposedly starts saving battery. I'm currently in day 2 of learning mode so I don't know for sure how well it works. But it seems to be getting good reviews so far...
https://play.google.com/store/apps/details?id=com.xiam.snapdragon.app
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
I've read the the battery guru app does nothing for your phone whatsoever...

mrjoeltan said:
I've read the the battery guru app does nothing for your phone whatsoever...
Click to expand...
Click to collapse
It just turns radios off and shuts down syncing, nothing you can't do by yourself.
Sent from my Nexus 4 using xda app-developers app

mrjoeltan said:
I've read the the battery guru app does nothing for your phone whatsoever...
Click to expand...
Click to collapse
Well it basically learns your routines and changes your sync settings, turns WiFi on/off when needed, and various other things you could do yourself but might forget. Kinda like tasker for lazy people so in theory yes it could save you some battery.
Sent from my Nexus 4 using xda app-developers app

VoiD_Dweller said:
Try Eugene's CPU Sleeper from the market. It turns off all but one of your cores while the screen is off to minimize cpu usage. On CM nightly with stock kernel I got 34 hours with 17% remaining and 2.5 hours screen on time til I ended up charging my phone. I run my CPU at 1350 max / 384 min.
Make sure under sound settings all the sound on touch, keypad, etc are all turned off. Each time your phone ticks a sound it uses battery. Also bright display backgrounds will use more battery.
I only sync chrome, calendar and instant upload
good luck
Click to expand...
Click to collapse
All those sounds are already off, that's the first thing I do
Thanks for that app, I'll try it to see if it helps.
curtzxion said:
Clock down your device
Use conservative cpu governor or something like that,
Undervolt if necessary
Have a low brightness screen if it's possible
Sent from my Nexus 4
Click to expand...
Click to collapse
I undervolted the hell out of my phone, at one time it was a -150mv undervolt.
Brightness was on auto, I've now switched to controlling it manually to see if that helps
gravitysandwich said:
Flash Franco's kernel.
http://forum.xda-developers.com/showthread.php?t=2002782
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Tried his kernel already a few weeks ago. No real change in battery.

That seems weird
I am completely stock, and set things more or less the same with you (not syncing, no gps unless needed, on wifi all the time) and I could get over 4 hours screen on time on an 18 hours battery life. I believe this phone (chipset?) is really efficient on standby. Does your phone show that it's being kept awake much using the cpu spy app?

Same here... I'm on stock and the best i got was pretty impressive i think. 49 hours with 4 hours screen on time. I waited till the phone turned off by itself Even though i don't get that with heavier use, it's still enough to take me through a whole day which is better then my old phone
My battery saving tips:
-turn off everything you're not using (wi-fi when not at home or office/school, bluetooth, gps, low brightness indoors)
-swype away apps after you exit from them
-turn off the screen when you put it down/in your pocket etc.
-turn off google now
That is everything that i do. No sync disabling, undervolting, underclocking or other tricks

Install greenify app from playstore
Sent from my Nexus 4 using XDA Premium HD app

drbrainsol said:
My battery saving tips:
-swype away apps after you exit from them
Click to expand...
Click to collapse
That doesn't do anything. Android as a native app killer. On the other side, this would lead to more battery consumption as Android would have to initalize data the next time you open that app. IMHO leave the apps as they are, Android would take care of them and kill them when required.
lowrider262 said:
Kinda like tasker for lazy people so in theory yes it could save you some battery.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
IMO it's isn't as powerful as tasker, but it's giving some extra juice.

s2 in jb 4.1.2 battery life

hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
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I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel

I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??

krazy1101 said:
I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel
Click to expand...
Click to collapse
oh really that means I should be getting better because I am on 2000mah but it seems not. Im not sure what's the problem if its the battery or the kernel. I also used an ICS firmware from Samsung I9100TDULP4. I don't know if that affects the battery life
Sent from my GT-I9100 using xda app-developers app

peRFect! said:
I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??
Click to expand...
Click to collapse
Well I dont know if it is properly calibrated. By the way I got this unit from my uncle so I am not really sure if the battery is still good. How do we know if its still good. I dont know how old is this battery. How do we calibrate the battery and does the room affect this battery life?
Sent from my GT-I9100 using xda app-developers app

by the way I just installed this rom A week ago. The battery takes 3-4 hours to be charged using my xperia charger
Sent from my GT-I9100 using xda app-developers app

I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)

Mr.KiLLeR said:
I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)
Click to expand...
Click to collapse
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app

infinitylook said:
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I have tried Slim Bean too and after trying that i came to Miui Rom

anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app

anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app

right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app

infinitylook said:
right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
To callibrate battery..first completely drain the battery to about 5%, then charge the phone non stop without disturbing it till 100% and immediately remove the charger..again fully drain the battery and follow the above steps and u will get better battery life after a few cycles!
About roms..battery life does differ from rom to rom...i suggest u could check the custom kernels packed with zzmoove governor, ithat particular governor definitely improves the battery backup!
And in the above post es file explorer is eating ur battery..for that u should download greenify and hibernate apps continuously running in background!

great. I will follow your steps. one more thing. how can I know if the battery is still good or if its still holding the proper charge its suppose to have? thanks
Sent from my GT-I9100 using xda app-developers app

best I can get is about 3 days standby in jb stock.

I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!

jmarcnms said:
I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!
Click to expand...
Click to collapse
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app

SGS2 Battery Life on 4.1.2
infinitylook said:
hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
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Below is a reply in some other forum by Samsung offcials regarding a specific method to Hard-Reboot your phone after a Firmware update: This method particularly helped me improve the battery life on SGS2 after 4.1.2 update.
"1. I’m sorry you are having issues with your device after upgrading the firmware. I can understand your frustration about this.
Old systems settings can be left on the phone after an update occurs, which is why we usually recommend a full factory reset after updating. If this isn’t done your device may begin to give false readings from system resources, or experience technical problems, which may explain the issue you are having.
We would advise on doing the following, which is designed to reset the settings on your device. Please back up your device using Samsung KIES before you do this.
1) Remove the battery for at least 40 minutes, put the battery back in and allow it to fully discharge. Afterwards, perform a full battery charge with the device turned off. Do not interrupt the charging process.
2) After the battery is fully charged, we would like you to perform a full factory reset, which can be done via Settings > Backup > Reset.
This process will reset your device, remove old system files that are no longer needed and enable your device to operate normally again.
Please let us know if your device continues to experience problems after the reset so we can investigate further.
If you require any further assistance, please contact Samsung again and we will be more than happy to help.
Kind regards,
Stewart
Online Support Team
SAMSUNG Customer Support Centre

infinitylook said:
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
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Actually I only use stock JB.. and trying to get it last longer with some custom kernels.. recently trying snapdragon rom, which is stock JB as well but with some S4 apk made compatible with S2... tried some time back omega, vanila rootbox and some other android builds for s2.. but was facing few stability issues / bugs and also missed some features that i was getting from stock rom.. so i gave up with these... now just aiming at stability and if possible battery endurance.. but not at the cost of stability.

Battery life feedback

I saw quite a few topics comparing consumption with various kernels, setups, roms. But most of those are done by one person using one phone with different setup. Even if there would be variety of people, the information would be lost in discussions. Here I want you to post structured informations about your achievements in battery usage. Please post in following structure:
1. Battery life hours;
2. Screen on time hours;
3. Battery type;
4. Rom
5. Kernel
6. Screenshots to prove 1 and 3
7. Special notes, like consumption in offscreen time, and during screen on or some special undervolting or anything else.
My desire to see world records in battery life discipline.
My personal records were done on gingerbread rom with don't remember what kernel and conditions but believe it was tegracs kernel.
Screenshots attached:
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test conditions
For a reliable test all must have the same apps and power mangment values.
Too many variables will lead to no conclusion.

ranhaber said:
For a reliable test all must have the same apps and power mangment values.
Too many variables will lead to no conclusion.
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To make it simpler, my idea was not testing but rather boasting about best results, records, Guinness book for i9100 stock hardware.
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I can boast!
I just hit a new record. I'm on the Bell (Canadian Phone Company) official 4.1.2. I use greenify to hibernate things like facebook and keep them from running the background. I used titanium backup to disable a host of system programs that I don't use/need. I also have setCPU running at its default settings.
Last week I made it to 7d 54m 24s
I forgot to look how much screen time I used but it made up 25% of my power consumption. When I'm at home or at work I have access to a PC so I only use the phone for texting, checking the odd email etc....
If I'm out of town I might get 2 days on it. My average is 4-5 days. I must not have used it too much last week.
I also have an Anker battery in it (as my originals charge time started to decrease). It seems to do rather well (maybe even slightly better than the stock battery).

Zod5000 said:
I can boast!
I just hit a new record. I'm on the Bell (Canadian Phone Company) official 4.1.2. I use greenify to hibernate things like facebook and keep them from running the background. I used titanium backup to disable a host of system programs that I don't use/need. I also have setCPU running at its default settings.
Last week I made it to 7d 54m 24s
I forgot to look how much screen time I used but it made up 25% of my power consumption. When I'm at home or at work I have access to a PC so I only use the phone for texting, checking the odd email etc....
If I'm out of town I might get 2 days on it. My average is 4-5 days. I must not have used it too much last week.
I also have an Anker battery in it (as my originals charge time started to decrease). It seems to do rather well (maybe even slightly better than the stock battery).
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Good job! I hope next time you will record scree time. And post some screeshots.
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brack11 said:
Screenshots attached:
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U dint attach the Main battery screen which indicates how many times u have charged. 7 hrs is believable. But 11 hrs!!
Pls provide the screenshots of those..

Prashanthme said:
U dint attach the Main battery screen which indicates how many times u have charged. 7 hrs is believable. But 11 hrs!!
Pls provide the screenshots of those..
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I didn't save the main screen, I think those shots were made about 3 years ago. And you just have to trust me that that 11 hours were true. BUT there's one trick here. My phone had an issue at that time, it couldn't go to sleep. I put it by my bed and closed flipper over the screen. When I woke up, I picked up the phone and noticed that screen was just a little darkened but not off. I looked at screen time and was shocked, made that screen... The rest you know. so, you right that this result is out of range.
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Here's my 7hour+ screenshot.. sorry I didn't screen shot the screens that go into more detail:

Zod5000 said:
Here's my 7hour+ screenshot.. sorry I didn't screen shot the screens that go into more detail:
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Unfortunately screen is not clear, do you mean screen time is 7+? Can you mention rom etc.?
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brack11 said:
Unfortunately screen is not clear, do you mean screen time is 7+? Can you mention rom etc.?
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I'm on the Bell (Canadian Phone Company) official 4.1.2. I use greenify to hibernate things like facebook and keep them from running the background. I used titanium backup to disable a host of system programs that I don't use/need. I also have setCPU running at its default settings.
I went 7 days before I had to charge it. There's no way that was 7 days of screen time.. lol. Maybe a few hours of screen time in there. If you click on the thumbnail it will go to imagebam and make it bigger.
I never thought to screenshot the detailed screen page where it says the hours you used. I just took that snapshot because I'd never made it to 7 days before (even though I rode it all the way down to 1% power). I also use an Anker battery in it, which seems to give it a smidge more power (even though the physical battery is the same size as a stock battery).

Zod5000 said:
I'm on the Bell (Canadian Phone Company) official 4.1.2. I use greenify to hibernate things like facebook and keep them from running the background. I used titanium backup to disable a host of system programs that I don't use/need. I also have setCPU running at its default settings.
I went 7 days before I had to charge it. There's no way that was 7 days of screen time.. lol. Maybe a few hours of screen time in there. If you click on the thumbnail it will go to imagebam and make it bigger.
I never thought to screenshot the detailed screen page where it says the hours you used. I just took that snapshot because I'd never made it to 7 days before (even though I rode it all the way down to 1% power). I also use an Anker battery in it, which seems to give it a smidge more power (even though the physical battery is the same size as a stock battery).
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No, problem. That's also a result to boast.
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I got 2hrs of screen on time yesterday wid android 2.3.6 wid battery being 50% (I flashed for checking this only )
All time I was using net on edge..
So I assume 5 hrs screen on time wid gb is not a big deal...
Now I reverted back to stock 4.1.2 coz there are several features I missed in it..

doctor_droid said:
I got 2hrs of screen on time yesterday wid android 2.3.6 wid battery being 50% (I flashed for checking this only )
All time I was using net on edge..
So I assume 5 hrs screen on time wid gb is not a big deal...
Now I reverted back to stock 4.1.2 coz there are several features I missed in it..
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Understand you, I also had tremendous results on gb (see first post) but everything is changing nowadays, and after sitting on jb for a while you can't go back even if you want.
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doctor_droid said:
I got 2hrs of screen on time yesterday wid android 2.3.6 wid battery being 50% (I flashed for checking this only )
All time I was using net on edge..
So I assume 5 hrs screen on time wid gb is not a big deal...
Now I reverted back to stock 4.1.2 coz there are several features I missed in it..
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5 hr screen on time is achieveable on jb rom.I got 4 hr screen on time with 35% battery remaining.
See this
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umair42 said:
5 hr screen on time is achieveable on jb rom.I got 4 hr screen on time with 35% battery remaining.
See this
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Can you tell more? Rom, kernel, presets, usage?
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This is my personal record back from good old Gb times...
Gathering +6 hours out of 2 days average usage was quite normal....
Now on 4.3 I'm happy if I scratch 5 hours...
Always Samsung's stock 2000 mah battery.
One day i was sick at home and I got more then 8 hours screen on time but within 9 hours...
Regards
Tapatalked from my Galaxy SII

brack11 said:
Can you tell more? Rom, kernel, presets, usage?
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Neatrom lite
Apolo kernel
Fb,youtube,xda app and little bit of gaming.
Some calls and sms
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Karpfenhai said:
This is my personal record back from good old Gb times...
Gathering +6 hours out of 2 days average usage was quite normal....
Now on 4.3 I'm happy if I scratch 5 hours...
Always Samsung's stock 2000 mah battery.
One day i was sick at home and I got more then 8 hours screen on time but within 9 hours...
Regards
Tapatalked from my Galaxy SII
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Did you get 2000ma as stock battery? Is it some different from international model?
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brack11 said:
Did you get 2000ma as stock battery? Is it some different from international model?
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I used to do pretty good on stock ICS 4.0.4 roms. They never released 4.0.4 in Canada so I think I used a rom from the UK. It was really light on battery consumption. Way better than gingerbread, 4.0.3 or 4.1.2.
The only downside was wiping the phone with 4.0.4 using certain programs would brick the phone so I think alot of people avoid the 4.0.4 roms (and probably why the didn't finish spreading globally).

Wow.
You guys have some good results there.
But 7 days I can hardly believe.
Cheers.