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 :-(
Sent from my GT-I9100 using Tapatalk

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.

Sent from my GT-I9100 using Tapatalk

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
Sent from my GT-I9100 using Tapatalk

Put on watchdog and let it run in the back ground and see if it's any app or widget misbehaving.

Thanks trying now
Sent from my GT-I9100 using Tapatalk

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

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?
Sent from my GT-I9100 using Tapatalk

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..
Sent from my GT-I9100 using Tapatalk
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

Starburst ROM + Pershoot's 1.4ghz Kernel Stats

Hello, Just thought I would post my stats using the new Starburst rom with Pershoot's Kernel. Getting great speed and the system runs very smooth but it feels like my battery is draining quite abit faster...
I have setcpu set as "OnDemand" 300mhz-1400, 256mhz when screen is off. Is this battery drain normal? Ran for 4 hours idle while working, then during break i used my tablet for about 15 min, idle another 4 hours and then after work I only got about 2 1/2 hours of use from my tablet before getting the 15% battery warning (79% to 15% in two and a half hours).
Before installing any TW rom and using Pershoot's older (non-TW) kernel with same settings I was getting atleast 4 hours after having the system idle all day while i work (10 hrs), this was with about 40%+ battery left to spare. Please take a look at my stats and feel free to give any suggestions to help me get more battery
The performance now is very good, but before TW i was getting about 150 less points in quadrant (2950ish)with the extra battery life. Also i dont let any apps run wild while idle and have gps,bluetooth,wifi turned off during working hours.
Quadrant Score, Starburst TW + Pershoot's Kernel Aug/9/2011 builds (score:3100).
http://imageshack.us/photo/my-images/842/sc20110810234001.jpg/
Battery Stats, notice the steep drop at the end? Thats the only time I really used my tablet... about 2 1/2 hours, web surfing (14 hours 35min total on battery).
http://imageshack.us/photo/my-images/707/sc20110811003248.jpg/

why is your screen on and awake bar completely full if you only used it for the last 2:30?
In GENERAL
Screen on time 8-10 hours
Standby time ~100-500 hours depending on whats on/apps installed.

No idea why it says the screen was on, it was not... And I had the unit on but as far as i know there isn't a sleep option so the unit was awake but not being used.
If you know of a sleep option please let me know, thanks for your reply

Yeah I'm still testing this exact rom/kernel combo and there is something up with it.
On a reboot, does the battery level go up? Does it stay up for a little while then drop back down?
Also have you done a battery calibration? If so, how?
I'm just trying to narrow down what could be causing the problem. I'm no dev by any stretch of the imagination, but for some reason I really want to find out what is causing this. It doesnt seem to affect all machines so in finding the simularities of those that are having this issue, we can squash this bug....

I was using this combo and my google music kept force closing.
Sent from my ADR6400L using XDA Premium App

it should goto sleep automatically, and if screen was off it should be indicated as off. maybe something is wrong. im currently on pershoot's kernel as well and have had some issues with battery calibration (reporting bogus stats).
i think pershoot is looking into the issues on his thread.
im using 10.1-Wifi, Touchwiz UX (OTA, GT-P7510)

It's a kernel problem. Try going back to stock or an older version of pershoots.

It'll be fixed today from what I've read.

Late last night reinstalled Starburst with its original rom, after my 10 hour work day it still has 95% battery left (after some galaxy on fire 2 during my break), hella lot better than it was yesterday.
I will wait for Pershoot's revised kernel and test it out again. And thanks again for all the devs making custom roms and kernels! Much love to ya! <3
*Stock Starburst kernel is showing my screen being off (when it is off) and my system as not awake when screen is off under battery usage in settings

Kayak83 said:
It'll be fixed today from what I've read.
Click to expand...
Click to collapse
From what I've read, he claims there is no problem with the kernel, the problem is with the user. We havent calibrated the battery correctly according to pershoot himself. Problem is, I cant figure out the secret to a correct calibration process....

texasredrider said:
From what I've read, he claims there is no problem with the kernel, the problem is with the user. We havent calibrated the battery correctly according to pershoot himself. Problem is, I cant figure out the secret to a correct calibration process....
Click to expand...
Click to collapse
Flash Starburst or stock rom then charge your tablet 100%, once your battery is fully charged flash Pershoot's kernel.
I have not tried this myself but from what I have read it works, right now im happy with the performance on stock Starburst kernel, quadrant is at 2300 compared to Pershoot's 3100 but its running so smooth I cannot notice the difference. Going to wait for Pershoot's reworked kernel and then flash it, I gots to have my voodoo!
Update:
Today I reset my battery, and installed Pershoot's kernel. I'm still getting battery drain, used for 5 min this morning and its down to 80% (just browsing web)... Also my clock got stuck at around 5:08am and my alarm did not work this morning until i turned my screen on. After I installed Pershoots kernel alot of apps were acting up and not running properly but after a reboot my clock and apps started working as normal.
And I have to hit/hold the power button like 5 times to turn on the unit now. Going back to original Starburst for now.

jzen said:
Flash Starburst or stock rom then charge your tablet 100%, once your battery is fully charged flash Pershoot's kernel.
I have not tried this myself but from what I have read it works, right now im happy with the performance on stock Starburst kernel, quadrant is at 2300 compared to Pershoot's 3100 but its running so smooth I cannot notice the difference. Going to wait for Pershoot's reworked kernel and then flash it, I gots to have my voodoo!
Update:
Today I reset my battery, and installed Pershoot's kernel. I'm still getting battery drain, used for 5 min this morning and its down to 80% (just browsing web)... Also my clock got stuck at around 5:08am and my alarm did not work this morning until i turned my screen on. After I installed Pershoots kernel alot of apps were acting up and not running properly but after a reboot my clock and apps started working as normal.
Click to expand...
Click to collapse
Darn. I was just about to give this a try. Oh well I'll try it anyways, nothing to lose. Just remember all the issues that may or may not be caused by the kernel is actually user error

Did anyone try the newest version of the kernel? Posted 19/aug/2011.

bambam82 said:
Did anyone try the newest version of the kernel? Posted 19/aug/2011.
Click to expand...
Click to collapse
I'm using it now & it's a very good finish product. His last version gave me battery issues like no other. I believe he withdrew it after numerous complaints over battery issues.

Working great.
I always wipe Dalvik and Cache before flashing the new kernel.

Silenus21 said:
Working great.
I always wipe Dalvik and Cache before flashing the new kernel.
Click to expand...
Click to collapse
sorry for the noob question but what does dalvik and cache contain?
Edit: Nvrmind. Found out my answer. I shall do this the next round of installing kernel

Battery drain issue!

Battery issue if screen is on
It drains 1 percent every 4 minute whether wifi is on or of off it drains
And in standby mode it drains 1% every hour :-( any help?
Plzzzz it was working fine before I flashed ics onecosmic and now I'm on miui mintberry rom.
Should I flash to stock firmware.?
Sent from Galaxy S running Miui mintberry rom using TAPATALK

Is there only the wifi on ?
What about GPS, bluetooth, ... ?

Bluetoth wifi edge gprs background data all off.
Sent from Galaxy S running Miui mintberry rom using TAPATALK

tried using CPU spy to see what its upto?
try a different governor? lulzactive works fairly well for me. ondemand always seems to hammer my battery

Smartassv2
Or conservative?
can anyone tell
1% battery drainage time if only screens on and everything is off
And if everything is on?
Both plx
And total time if continously. Use
Sent from Galaxy S running Miui mintberry rom using TAPATALK

Try other Kernal

I've noticed my latest flash to onecosmic's RC4 was still battery hungry, but some tweaking with SetCPU and using NovaLauncher, as well as a proper modem for my area seem to have it straightened out again.
Does it tell you if the screen is using more than the cpu or not?

possible live wallpappers?

No live wallpapers
Can I upload screenshots? Here About my battery drain.
Using battery indicator pro.
And can anyone tell how to back up efs?
Sent from Galaxy S running Miui mintberry rom using TAPATALK

My phone had really good battery levels until yesturday.
It crashed while I was watching videos in h/w mode then down hill from there. 100% gone in 5 hours. I have a feeling the GPU has blown??? Might try another rom.
Using Docs master rom???
Any ideas

Hi there,
Firstly, I would ensure we rule out a hardware issue by flashing a completely stock firmware using ODIN. It would be best if you remove your external SD card, and backup all your data on your internal memory and then wipe as much as you can as well. After flashing a stock firmware, see if there is a battery drain still, and if so you will at least have more evidence to suggest there is a hardware issue.
CPU Spy is an excellent app for discovering issues whereby the CPU is being utilised too much - additionally, System Panel is also excellent. However, again neither of these will be able to determine if there is a hardware issue of some sort, only excessive CPU usage.
WRT EFS backup, my preferred method it to use Root Explorer and create an archive whilst in the EFS directory. It will put the archive on your SD card - and it takes no time at all.
Some of the apps I mentioned will be charged for I guess, but not very much.
If you need more details, let me know.

:-( my battery was perfect. I installed onecosmic and it was fine battery was normal after few days my battery started draining fast 1% every 3 minutes and I flashed Miui mintberry rom and still problem exist. Even wifi off and background data off and edge too it drains 1% 3-5 minutes while screen is off or deep sleep it drain 1% evey hour
Last night I flashed back to stock rom 2.3.4 and rooted and installed Miui mintberry rom again still problem exist
What should I do :-( plx help
Sent from my GT-I9000 using Tapatalk

ok.
You need to examine this problem to narrow down the cause. You will have to invest some time and possibly a little money to achieve that! If all else fails, you can of course buy a new battery - but it's best to work out where the drain is coming from.
Have you checked the battery log in Android settings?
Also consider installing OS Monitor, it is free and allows you to look at what processes are running.

OK ill share links of pics Cox Tapatalk crash while uploading pics
Sent from my GT-I9000 using Tapatalk

Open and see screen shots
http://db.tt/aOoi6CMO
http://db.tt/T59WN9Kv
Sent from my GT-I9000 using Tapatalk

I used watchdog
And cpu spy
Sent from my GT-I9000 using Tapatalk

That's quite some drain!
It's important to get the right tool for the job here and the apps you are using aren't detailed enough unfortunately.
System Panel will inspect android system apps to check where CPU usage is and log it making it very easy to determine what is happneing.
BetterbatteryStats will allow you to check on the WakeLocks which are a big cause of battery drain when the screen is off.
I use them both - but must say I haven't see such fast battery drain as yours.
Throughout this process, I suggest you stick to a ROM as close to stock as possible but prefereably with CWM.

OK I installed os monitor
Gona install other two apps
And I'm gona flash back to xxjvp
Sent from my GT-I9000 using Tapatalk

And I deleted everything in my sd card? Before
Sent from my GT-I9000 using Tapatalk

ok; excellent.
If you need help turning on the "monitor" mode of system panel let me know. Otherwise just turn it on and then use your phone normally for a while (i.e. allow time for it to be left with screen off as well) after that stats will be collected to show how the CPU has been used over that time.
Also check CPU Spy and make sure that the CPU isn't "stuck" in 1000Mhz

How to fix battery drain issue !

Hi I keep hearing people complaining about their battery draining, but I found turning off and on some features does infact stop the battery from draining too much, but this only works with the latest 4.4.2 update because I noticed that Power saving mode was not working on 4.3. You should set your setting like this:
The final step is to set you screen brightness to 25% (Brightness level by Curvefish) and turn off your wifi.
Sent from my SM-N9005 using xda app-developers app

:-\
or better turn off the phone
I don't buy a note 3 and sold my Note 2 and now I dimming the better Display and reduce the faster CPU Speed...
We need a Fix for AndroidOS Bug, and no normally Battery saving tips for all technical Devices with a Battery like a Laptop, Tab or Phone.
Thx, but sorry :-/
Gesendet von meinem SM-N9005 mit Tapatalk

Save more BATTERY
Use XPOSED:
- BOOTMANAGER.....Unwanted programs does not start
- GREENIFY........Hibernates programs
- PER APP HACKING......(VERY IMPORTANT)...Programs are not allowed to WAKELOCK phone.
Other important apps
- QUAD CORE MANAGER+.....Idles unushed cores when sleeping
- DS BATTERY SAVER PRO.....disables WIFI, GPS and DATA when sleeping
- ANDROID TWEAKS....all in one speed and battery saving package

Okay, but what off all is for non rooted phones?
Gesendet von meinem SM-N9005 mit Tapatalk

[Q] How to use ROMS/Kernels for Battery life

I just bought an unlocked Samsung Galaxy S5. It's pretty nice and all except the battery life is terrible. I tired to do it by turning things off, but then I was just left with a boring that can't even do anything. What's the point of all it's cools stuff if you have to turn it all off just to keep it alive? I heard that after rooting a phone one can download custom ROMS to improve Battery life. My problem is I don't have a single clue on how to use them. I've tried Omega, Waman, Alliance, Cyanogen and others but I don't know how to use any of them for battery life.
Is there some sort of tutorial for using them? Or anything at all that could point me in the right direction? I'm so confused I think I'd rather just buy and extended battery.

How long does your battery last? Maybe your expectations are unrealistic
I recommend you to flash an AOSP based ROM and install Greenify. Maybe you should also flash a custom kernel for tweaking your CPU.
Furthermore you could buy a new battery
Gesendet von meinem SM-G900F mit Tapatalk

Kureno7 said:
How long does your battery last? Maybe your expectations are unrealistic
I recommend you to flash an AOSP based ROM and install Greenify. Maybe you should also flash a custom kernel for tweaking your CPU.
Furthermore you could buy a new battery
Gesendet von meinem SM-G900F mit Tapatalk
Click to expand...
Click to collapse
Ok, but what does all that do an how do I use them?