Database Users

Battery Life Testing - Kernel + Rom Combo's

Iv always considered battery life a very important factor in my purchasing of a phone and was one of the big reasons i moved from my Desire HD to the Nexus S (amongst many others). However having been on the android scene for a while im used to tinkering with kernels and roms etc and due to the new battery graph in gingerbread im now able to make direct comparisons rom by rom and kernel by kernel to see how they all differ. This is all shown + explained below.
First id like to explain my method;
I install the rom and kernel with the same apps I always use and charge the phone fully until i am about to go to sleep. I then unplug the phone and leave it in the exactly the same place on my desk with exactly the same settings (sync intervals etc) and i kill all apps before i leave it just to make sure the test is fair.
In the morning i then take a screen shot of the battery life over the period of usually 8 hours and will upload this for you to see. I then look at the over-night battery drain as a comparison on how good battery life is on specific roms and kernels.
Justification - Many of you may be thinking who cares about standby battery life? I care about the battery when im using it!?
Well although that's valid there are many reasons i have taken this approach;
1. It is completely fair i.e. no individual differences such as 'im a heavy user' but we all have different definitions of a 'heavy user'. This is eliminated by the fact the phone is not used and thus the same every time (no individual differences)
2. If a phone has severe battery drain during sleep general knowledge should dictate that battery drain should increase when the screen is on, cpu is working and your syncing your facebook wall, thus a direct correlation with sleep battery drain and usage drain should be apparent.
Therefore i have decided over the next few days/weeks etc i will upload on a regular basis a screenshot of the battery drain over night, along with the battery use details and screen on time etc etc. In addition to the rom and kernel info and i hope that over time this proves to be a very useful thread.
I have been doing this over the last few days on a less strict system and there have been some VERY interesting results which i will upload over the next few days.
(Just a final note iv never really done anything like this on xda before so if its a stupid idea then please tell me now so i dont waste my time doing it, however if people are really interested please let me know and il make sure i do my best!!)
Thanks for reading my extremely long post!
Bratfink
SCREENSHOT 1: This was using modacos custom rom r10 and the kernel that comes with it, i had quite a short sleep (about 6 hours) but the curve pretty much shows what the point im trying to make is. The battery life is great!!
SCREENSHOT 2: This is CM7 Nightly build 27# with Netarchy's latest 1.2.1 kernel and although i didnt use the screen once of charge for a few minutes as you can see once the screen was off battery life barely decreased and was over a long period of time.
If anyone wants me to test specific combos please let me know.

I'm actually looking forward to reading your results.
Sent from my Nexus S using XDA App

Yep, this would actually be pretty useful. Good luck and good work!

i'm a sucker for these types of tests, always love doing them and seeing the results. post soon!

I like others will be keeping an interested eye on your findings.

Uploading pictures of modaco r10 with it's own original kernel today. Its an interesting result!
Sent from my Nexus S using XDA App
Uploaded to OP

I'm interested too.

Can u try modaco r10 with Netarchy 1.2.1 kernel.
bratfink said:
Iv always considered battery life a very important factor in my purchasing of a phone and was one of the big reasons i moved from my Desire HD to the Nexus S (amongst many others). However having been on the android scene for a while im used to tinkering with kernels and roms etc and due to the new battery graph in gingerbread im now able to make direct comparisons rom by rom and kernel by kernel to see how they all differ. This is all shown + explained below.
First id like to explain my method;
I install the rom and kernel with the same apps I always use and charge the phone fully until i am about to go to sleep. I then unplug the phone and leave it in the exactly the same place on my desk with exactly the same settings (sync intervals etc) and i kill all apps before i leave it just to make sure the test is fair.
In the morning i then take a screen shot of the battery life over the period of usually 8 hours and will upload this for you to see. I then look at the over-night battery drain as a comparison on how good battery life is on specific roms and kernels.
Justification - Many of you may be thinking who cares about standby battery life? I care about the battery when im using it!?
Well although that's valid there are many reasons i have taken this approach;
1. It is completely fair i.e. no individual differences such as 'im a heavy user' but we all have different definitions of a 'heavy user'. This is eliminated by the fact the phone is not used and thus the same every time (no individual differences)
2. If a phone has severe battery drain during sleep general knowledge should dictate that battery drain should increase when the screen is on, cpu is working and your syncing your facebook wall, thus a direct correlation with sleep battery drain and usage drain should be apparent.
Therefore i have decided over the next few days/weeks etc i will upload on a regular basis a screenshot of the battery drain over night, along with the battery use details and screen on time etc etc. In addition to the rom and kernel info and i hope that over time this proves to be a very useful thread.
I have been doing this over the last few days on a less strict system and there have been some VERY interesting results which i will upload over the next few days.
(Just a final note iv never really done anything like this on xda before so if its a stupid idea then please tell me now so i dont waste my time doing it, however if people are really interested please let me know and il make sure i do my best!!)
Thanks for reading my extremely long post!
Bratfink
SCREENSHOT 1: This was using modacos custom rom r10 and the kernel that comes with it, i had quite a short sleep (about 6 hours) but the curve pretty much shows what the point im trying to make is. The battery life is great!!
If anyone wants me to test specific combos please let me know.
Click to expand...
Click to collapse
Sent from my Dell Streak using XDA App

I'd be interested in seeing CM7, just whatever nightly build you manage to catch.

I don't think that result will give you precise result.
I found that statistic is wrong sometimes.
It is better to measure using "play video loop".
So, find a movie, set to the same brightness and play in loop?

gogol said:
I don't think that result will give you precise result.
I found that statistic is wrong sometimes.
It is better to measure using "play video loop".
So, find a movie, set to the same brightness and play in loop?
Click to expand...
Click to collapse
Unfortunately that will not give you how well the rom does while it is idle.

I'm really looking forward to your results. My only issue with this phone is the battery life is terrible. I ordered an extended battery off Ebay 3 weeks ago and have yet to receive it. Never ordering anything from Hong Kong again!

Fuse8499 said:
I'm really looking forward to your results. My only issue with this phone is the battery life is terrible. I ordered an extended battery off Ebay 3 weeks ago and have yet to receive it. Never ordering anything from Hong Kong again!
Click to expand...
Click to collapse
What were you using before that you consider this phone to have bad battery life? By far this phone has the best battery life of any Android device I've owned. If you want bad battery life, get an Evo. That is horrific battery life.

bratfink said:
Uploading pictures of modaco r10 with it's own original kernel today. Its an interesting result!
Sent from my Nexus S using XDA App
Uploaded to OP
Click to expand...
Click to collapse
I am looking forward to the rest of these, however just a quick question. What was your battery use like in that situation with the stock ROM? Just for reference, because I'm thinking I might switch to modaco soon. Thanks!

More soon
Iv got a few more screenies but it seems i may have to end this thread prematurely. Its the SNS or 2.3 but idle battery usage for me is pretty much identical no matter what the kernel or rom (il upload a CM7 + Netarchy 1.2.1 shot top op). This was unexpected on my behalf because with my DHD kernels and roms had a big impact on idle battery consumption. I have noticed however that without a full wipe when changing some kernels such as with M r10 idle battery life can increase drastically. I will continue for the next few days and if i dont see any big changes i may move method to a video loop or something of the sort.

Interesting find
I found out something today that may interest may of you. I was messing around with the sleep profiles on SetCpu with netarchys kernel and i found that its better to leave the range from 100-800 than 100-400 or less. This i believe is because when the phone is asleep and carries out a process it will be forced to clock to the maximum of 400mhz and then stay at that speed for 10 seconds, instead of say going up to 800mhz for 1-2 seconds to complete the same process. So a tip to you would be set your profile to 100-800mhz conservative and see what you get!

bratfink said:
I found out something today that may interest may of you. I was messing around with the sleep profiles on SetCpu with netarchys kernel and i found that its better to leave the range from 100-800 than 100-400 or less. This i believe is because when the phone is asleep and carries out a process it will be forced to clock to the maximum of 400mhz and then stay at that speed for 10 seconds, instead of say going up to 800mhz for 1-2 seconds to complete the same process. So a tip to you would be set your profile to 100-800mhz conservative and see what you get!
Click to expand...
Click to collapse
This kinda enforces the point that SetCPU is useless for the NS unless you really want to overclock...
Any battery saving tactics used buy lowering screen off profiles are counteracted by the system process;( So i think in the context of battery life you are probably better to not use SetCPU
JD

bratfink said:
Iv got a few more screenies but it seems i may have to end this thread prematurely. Its the SNS or 2.3 but idle battery usage for me is pretty much identical no matter what the kernel or rom (il upload a CM7 + Netarchy 1.2.1 shot top op). This was unexpected on my behalf because with my DHD kernels and roms had a big impact on idle battery consumption. I have noticed however that without a full wipe when changing some kernels such as with M r10 idle battery life can increase drastically. I will continue for the next few days and if i dont see any big changes i may move method to a video loop or something of the sort.
Click to expand...
Click to collapse
I would definitely move to a video loop or some other 'heavy use' task because when you think about it, not too much can really be changed when almost no power is being used in the first place.
You could also just mention your general feeling for the battery life of each rom, because quite often that is what I go by as my usage varies depending on a range of things (school day or weekend etc) .
Sent from my Nexus S using XDA App

Could you please test modaco r10 with Netarchy's latest 1.2.1 kernel ?
I would love to see the difference between modaco's default kernel vs netarchy's kernel.

On CM nightly 13, I just went 11 hours and I'm at 90%. That's 1/2% an hour. Not bad. That is with stock kernel.
Sent from my Nexus S using Tapatalk

[Q] Battery defect or rom issue?

Hello!
Sorry I can't post this in the Paranoid Android thread yet. As a noob I can't post in that forum until I have 10 posts so I'm at a loss as to where I should post this.
Anyway, I just put the new 2.1799 PA ROM on my Nexus 7. Unfortunately, I seem to have a serious battery drain when the screen is on. I have read many posts where people claim to have easily achieved 6+ hours of active screen time per battery charge whereas I'm only getting 3-4 hours of active screen time per charge, almost all of it related to web surfing. I have a strong wifi signal and I keep my screen brightness around 20/30 range. I'm not sure if it's the ROM or if my battery is defective.
I have also read about a battery calibration app through a different thread. Is that necessary for the PA ROM? I didn't see anything in the tutorial mentioning a battery calibration.
Included are two pictures, although they aren't very indicative of my problem as my tablet was sitting in my backpack for most the day.
Please tell me I'm just being paranoid! Thank you for the help!

thatnoob said:
Hello!
Sorry I can't post this in the Paranoid Android thread yet. As a noob I can't post in that forum until I have 10 posts so I'm at a loss as to where I should post this.
Anyway, I just put the new 2.1799 PA ROM on my Nexus 7. Unfortunately, I seem to have a serious battery drain when the screen is on. I have read many posts where people claim to have easily achieved 6+ hours of active screen time per battery charge whereas I'm only getting 3-4 hours of active screen time per charge, almost all of it related to web surfing. I have a strong wifi signal and I keep my screen brightness around 20/30 range. I'm not sure if it's the ROM or if my battery is defective.
I have also read about a battery calibration app through a different thread. Is that necessary for the PA ROM? I didn't see anything in the tutorial mentioning a battery calibration.
Included are two pictures, although they aren't very indicative of my problem as my tablet was sitting in my backpack for most the day.
Please tell me I'm just being paranoid! Thank you for the help!
Click to expand...
Click to collapse
The battery recalibration is a myth, but there is also no harm in trying it.
according to the pics you have attached, there doesn't seem to be anything wrong.
Battery also drains faster if you have too many apps that have services running.
Ex: Facebook.

I know there is a battery warranty, but how bad does it have to be to get it replaced? My battery cannot reach the 9.5hrs of 720p video playback (with headphones in) as achieved by Asus. I can only get 8hrs. From normal usage, I am only able to get 6 hours.

The ROM has less to do with the battery than the kernel does.
I would say try flashing another kernel. The default cyanogenmod kernel that comes with Paranoid Android didn't give me very good battery life.
Franco kernel gives me excellent battery life. Other good ones for battery are Faux or Motley.
You might like reading this thread about kernels and battery life.
http://forum.xda-developers.com/showthread.php?t=1889571
Sent from my Paranoid Nexus 7

AlleN7 said:
I know there is a battery warranty, but how bad does it have to be to get it replaced? My battery cannot reach the 9.5hrs of 720p video playback (with headphones in) as achieved by Asus. I can only get 8hrs. From normal usage, I am only able to get 6 hours.
Click to expand...
Click to collapse
That is in the normal range i would say, Companies usually exaggerate.
As suggested try franco's kernel.
He has a free kernel flashing app on the play store.

My issue is with how the battery percentage is running down......
Charge the N7 to max and use it for a good 2 hours and the battery STILL reads 100%.
Even if I then shut down and reboot it still shows 100%, then all of a sudden it will start to drop very slowly at first until it gets to around 40% which it then shuts down and will not reboot, obviously void of any battery cells.
Clearly it's a calibration issue.
This is on a stock non-rooted machine.

vinny86 said:
That is in the normal range i would say, Companies usually exaggerate.
As suggested try franco's kernel.
He has a free kernel flashing app on the play store.
Click to expand...
Click to collapse
I tried his kernal. I did my video play back test and I got the same 8 hours as before. During normal usage I think I will get about 30-40 more minutes. Still not what others are getting

Beards said:
My issue is with how the battery percentage is running down......
Charge the N7 to max and use it for a good 2 hours and the battery STILL reads 100%.
Even if I then shut down and reboot it still shows 100%, then all of a sudden it will start to drop very slowly at first until it gets to around 40% which it then shuts down and will not reboot, obviously void of any battery cells.
Clearly it's a calibration issue.
This is on a stock non-rooted machine.
Click to expand...
Click to collapse
Try a factory reset. If that doesn't work, you're more than likely actually looking at it being a hardware issue.
Sent from my Nexus 7 using Tapatalk 2

najaboy said:
Try a factory reset. If that doesn't work, you're more than likely actually looking at it being a hardware issue.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Factory reset was the very first thing I tried when it started playing up.... I'm hoping when 4.1.2 rolls out it may clear it. If not then I'll have to look at doing a root and access the battery file to see if deleting may help.
Thing is a recharge should clear out the battery file stats and calibrate, which clearly it's not.
Apart from this the N7 is flawless so it's staying with me. Running hours is the same, just doesn't give an accurate reading of how the battery is running down.
It's not a big issue.... to be honest I'm more curious than annoyed.

Beards said:
Factory reset was the very first thing I tried when it started playing up.... I'm hoping when 4.1.2 rolls out it may clear it. If not then I'll have to look at doing a root and access the battery file to see if deleting may help.
Thing is a recharge should clear out the battery file stats and calibrate, which clearly it's not.
Apart from this the N7 is flawless so it's staying with me. Running hours is the same, just doesn't give an accurate reading of how the battery is running down.
It's not a big issue.... to be honest I'm more curious than annoyed.
Click to expand...
Click to collapse
Have you tried installing a 3rd party battery app to see if it registers the correct battery output? This is the one I have used, works good. GL
https://play.google.com/store/apps/details?id=net.hubalek.android.reborn.beta&hl=en

snipe2nite said:
Have you tried installing a 3rd party battery app to see if it registers the correct battery output? This is the one I have used, works good. GL
https://play.google.com/store/apps/details?id=net.hubalek.android.reborn.beta&hl=en
Click to expand...
Click to collapse
Yes thanks.... Tried quite a few. Nothing changes.

Beards said:
Factory reset was the very first thing I tried when it started playing up.... I'm hoping when 4.1.2 rolls out it may clear it. If not then I'll have to look at doing a root and access the battery file to see if deleting may help.
Thing is a recharge should clear out the battery file stats and calibrate, which clearly it's not.
Apart from this the N7 is flawless so it's staying with me. Running hours is the same, just doesn't give an accurate reading of how the battery is running down.
It's not a big issue.... to be honest I'm more curious than annoyed.
Click to expand...
Click to collapse
You do realize that wiping batterystats.bin has absolutely nothing to do with the battery fuel gauge, right? It does not "calibrate" the battery or affect reported charge. The myth of wiping battery stats has long since been debunked by Google's Android engineers. The only info contained in the file is a list of apps that used battery since the last full charge.
The only other thing you could do besides a factory reset is see if 4.1.2 fixes it for you. If not, then it's definitely hardware causing the issue- the battery charge is likely being improperly read and reported by the battery itself.
Sent from my Nexus 7 using Tapatalk 2

Battery drain question with Android 4.3

Good evening,
I have read all over that people are complaining about the horrible battery drain and I would be one of them. If I am lucky I will get 12 hours from a battery while at work (metal building with mediocre reception) and 18 hours while outside without any reception problems.
I have been suspecting that an app is running in the background that could be causing the battery drain but I haven't been able to find it. So, I am wondering if I can get some help in finding what might be running to make the battery life a little bit better. Attached are screenshots.
Thank you.

Thought 12 - 18 hours would be a decent time to have on 4.3?
It's more than likely Google Now running in the background so you should try turning that off

Same problem
Hello,
I have exactly the same problem. I did install GE rom on my galaxy s4 for few days. I am a little a "newbi" in this kind of things. Even I spend my afternoon on the forum to find an answer, I am not able to know what I have to do now.
Briefly, here are my stats :
On battery : 8h7m
Screen on : 3h9m
Remain : 5 %
I publish herewith the resume of BetterBatteryStats. If anyone can "interpret" that and tell me if there is something wrong, that would be great !
Vince

AndroidAndre said:
Thought 12 - 18 hours would be a decent time to have on 4.3?
It's more than likely Google Now running in the background so you should try turning that off
Click to expand...
Click to collapse
I checked and Google Now has been turned off. I also have had Google Maps location reporting turned off (read that might drain the battery).

Using cyanogenmod provides me around 1 and a half days. .... but I usually have to kill all Google services ...

Using Easy Battery Saver on Intelligent Mode I can get about a day or more use, mimimal though, and still have at least 50% battery left.

Good evening,
I have tried running it with the settings suggested and it has not made much of a difference. I took my phone off of change at 5:15 this morning and I am now getting a low battery warning.
Attached are screenshots from Battery Status Plus. Is there anything else I can do?
Thanks.

mightymouse3062 said:
Good evening,
I have tried running it with the settings suggested and it has not made much of a difference. I took my phone off of change at 5:15 this morning and I am now getting a low battery warning.
Attached are screenshots from Battery Status Plus. Is there anything else I can do?
Thanks.
Click to expand...
Click to collapse
Not enought info, but seems to be a partial wakelocks problem. More screenshots needed (stock setting battery graphs and partialmwakelocks in battery stats)
Enviado desde mi GT-P7510 usando Tapatalk 2

Use wakelock detector, that app you are using gives very little useful information

If you have rooted device I suggest to Install "Greenify" app. it close (hibernate) all unused apps when your device is idle (standby)

+1 for Greenify. it really works

mightymouse3062 said:
Good evening,
I have read all over that people are complaining about the horrible battery drain and I would be one of them. If I am lucky I will get 12 hours from a battery while at work (metal building with mediocre reception) and 18 hours while outside without any reception problems.
I have been suspecting that an app is running in the background that could be causing the battery drain but I haven't been able to find it. So, I am wondering if I can get some help in finding what might be running to make the battery life a little bit better. Attached are screenshots.
Thank you.
Click to expand...
Click to collapse
Hi,
do you have only battery drains or also random reboots?
the fact is that samsung shipped out a bad serie of batteries (which is confirmed by Samsung) their serial starts with BD
the symptoms of a bad battery are:
Huge battery drain
random reboots
while rebooting the phone hangs at samsungs logo
battery is swelling
phone shutting down while you have an incomming call/sms
when you are the "lucky one" to experience one of the above symptoms please replace your battery asap under warranty
if you don't do this you risk a phone exploding in the pocket of your pants this is not only painfull for your phone but also for "everything else" whats in there

Acer4605 said:
Hi,
do you have only battery drains or also random reboots?
the fact is that samsung shipped out a bad serie of batteries (which is confirmed by Samsung) their serial starts with BD
the symptoms of a bad battery are:
Huge battery drain
random reboots
while rebooting the phone hangs at samsungs logo
battery is swelling
phone shutting down while you have an incomming call/sms
when you are the "lucky one" to experience one of the above symptoms please replace your battery asap under warranty
if you don't do this you risk a phone exploding in the pocket of your pants this is not only painfull for your phone but also for "everything else" whats in there
Click to expand...
Click to collapse
The only symptoms that I have out of that list is huge battery drain so I don't suspect that it is a bad battery.
I took some more screenshots and have attached them. I just installed the wakelock detector and will let you know how that goes.
Thanks for the help

mightymouse3062 said:
The only symptoms that I have out of that list is huge battery drain so I don't suspect that it is a bad battery.
I took some more screenshots and have attached them. I just installed the wakelock detector and will let you know how that goes.
Thanks for the help
Click to expand...
Click to collapse
A lot of screenshot but almost no info about battery drains (some info of data ussage, som apps consuption, etc, but nothing relevant)... It would be great if you could post screenshots of
1) settings->more->battery
2) settings->more->battery->touch the little graph
3) settings->more->battery->screen
4) any screenshot for partial wakelocks in better battery stats or that program you are using
First three screenshots are the most important and everyone should post them when a drain problem exists (no needed any third battery management app)

[Q] Android System and Android OS

I know this may be old news and I've done a lot of research before posting this thread.
I've read somewhere that this high percentage/drain in battery due to "Android System" and "Android OS" is caused by android 4.4.2 itself and Snapdragon S800 chip!
I have a N9005 and I've tried 3 roms so far and all of them have this issue and my battery life sucks! I can barely reach 3 hrs screen On even in 12hrs!
I'm currently at 5:40 on battery and it's already at 60% with 1:20 screen on only!
I tried greenify and Wakelock detector as well as Unbounce xposed modules but nothing is really helping!
My question: Is there is any ROM or Kernel that you know about that doesn't have / solve this issue?!
Thank you.

Life Engineer said:
I know this may be old news and I've done a lot of research before posting this thread.
I've read somewhere that this high percentage/drain in battery due to "Android System" and "Android OS" is caused by android 4.4.2 itself and Snapdragon S800 chip!
I have a N9005 and I've tried 3 roms so far and all of them have this issue and my battery life sucks! I can barely reach 3 hrs screen On even in 12hrs!
I'm currently at 5:40 on battery and it's already at 60% with 1:20 screen on only!
I tried greenify and Wakelock detector as well as Unbounce xposed modules but nothing is really helping!
My question: Is there is any ROM or Kernel that you know about that doesn't have / solve this issue?!
Thank you.
Click to expand...
Click to collapse
I would consider you as one of the lucky ones. If you think that's bad then I don't really know what I'm experiencing. I can reach about 2 hrs screen time on in 12 hours before my battery is all drained. Try upgrading to 4.4.4 and see if you can see a difference. But to me it sounds pretty normal, because of the extreme screen Note 3 has it will drain A LOT of battery. What does Wakelock say? What wakes the phone up? Can you post a screenshot of your battery screen?

BunnyPig said:
I would consider you as one of the lucky ones. If you think that's bad then I don't really know what I'm experiencing. I can reach about 2 hrs screen time on in 12 hours before my battery is all drained. Try upgrading to 4.4.4 and see if you can see a difference. But to me it sounds pretty normal, because of the extreme screen Note 3 has it will drain A LOT of battery. What does Wakelock say? What wakes the phone up? Can you post a screenshot of your battery screen?
Click to expand...
Click to collapse
Mine also has only 1 hour of screen time before about 50%, my rom is an extremely debloated stock one, NF4 by Rayman95. Could it be my battery? TIA
N9005 NH1 32GB Stock debloated rooted ROM

This_Guyse said:
Mine also has only 1 hour of screen time before about 50%, my rom is an extremely debloated stock one, NF4 by Rayman95. Could it be my battery? TIA
N9005 NH1 32GB Stock debloated rooted ROM
Click to expand...
Click to collapse
Before we judge the system itself we may want to check your battery first. Try doing a calibration of it. You can find several apps that will calibrate it for you automatically or you can just google "Android calibrate battery" and you'll find tons of tutorials. After you've calibrated your battery, try and see if there is any improvements.
In case nothing got solved or better, try using another ROM (you might even want to try Cyanogenmod stock) and see if there is any changes. If not, then yes, it might be your battery that's giving up.

BunnyPig said:
Before we judge the system itself we may want to check your battery first. Try doing a calibration of it. You can find several apps that will calibrate it for you automatically or you can just google "Android calibrate battery" and you'll find tons of tutorials. After you've calibrated your battery, try and see if there is any improvements.
In case nothing got solved or better, try using another ROM (you might even want to try Cyanogenmod stock) and see if there is any changes. If not, then yes, it might be your battery that's giving up.
Click to expand...
Click to collapse
Yes, might be my battery that's giving up! Tried all of these and didn't work [emoji16][emoji13] Going to get a new battery soon, really appreciate your help though
N9005 NH1 32GB Stock debloated rooted ROM

Try NH1. Though I didn't really have your kind of problem when I was on NF4.

Life Engineer said:
I know this may be old news and I've done a lot of research before posting this thread.
I've read somewhere that this high percentage/drain in battery due to "Android System" and "Android OS" is caused by android 4.4.2 itself and Snapdragon S800 chip!
I have a N9005 and I've tried 3 roms so far and all of them have this issue and my battery life sucks! I can barely reach 3 hrs screen On even in 12hrs!
I'm currently at 5:40 on battery and it's already at 60% with 1:20 screen on only!
I tried greenify and Wakelock detector as well as Unbounce xposed modules but nothing is really helping!
My question: Is there is any ROM or Kernel that you know about that doesn't have / solve this issue?!
Thank you.
Click to expand...
Click to collapse
Go into your dialer and dial *#0228# and there you will find the battery calibrator. If you do this, make sure the phone is charged to 100% and let it discharge. Run it through a few cycles and see what happen. should make a difference.

Battery Question

Hi, I have been using my nexus 6p for quite a while flashing custom roms like crazy and I read in one of the threads that the battery is best with the stock, so I decided to try it, except I am not getting a real difference.
Now, I need some help reading the battery graphs. I have tried bunch of battery apps to test the wakelock and haven't found much issues. I have turned off scanning, location, wifi, the only thing I did not turn off was the data. I even tried to turn off the SYNC one time and didn't make much difference.
I suspect it is my network. I am getting LTE in my area, but I don't know how to read the signal in the stock battery graph. In total I can be getting about 4 SOT at the end of my day down to 10 percent and I see people are getting crazy 6 or 7. Images below
http://imgur.com/ulpC6Gy
http://imgur.com/na2Vg3S
http://imgur.com/8KufbKJ
http://imgur.com/j8d0Igr
Any hep would be greatly appreciated.

matteosaeed said:
Hi, I have been using my nexus 6p for quite a while flashing custom roms like crazy and I read in one of the threads that the battery is best with the stock, so I decided to try it, except I am not getting a real difference.
Now, I need some help reading the battery graphs. I have tried bunch of battery apps to test the wakelock and haven't found much issues. I have turned off scanning, location, wifi, the only thing I did not turn off was the data. I even tried to turn off the SYNC one time and didn't make much difference.
I suspect it is my network. I am getting LTE in my area, but I don't know how to read the signal in the stock battery graph. In total I can be getting about 4 SOT at the end of my day down to 10 percent and I see people are getting crazy 6 or 7. Images below
http://imgur.com/ulpC6Gy
http://imgur.com/na2Vg3S
http://imgur.com/8KufbKJ
http://imgur.com/j8d0Igr
Any hep would be greatly appreciated.
Click to expand...
Click to collapse
You're gonna need to use something like BetterBatteryStats to investigate properly, the stock battery stats app is pretty much useless.

Heisenberg said:
You're gonna need to use something like BetterBatteryStats to investigate properly, the stock battery stats app is pretty much useless.
Click to expand...
Click to collapse
I tried the better battery stars, and the gsam battery, I couldn't really detect much out of it. Do you think I can monitor the signal drain? Do you think it could drain the battery this much?
Thanks,

matteosaeed said:
I tried the better battery stars, and the gsam battery, I couldn't really detect much out of it. Do you think I can monitor the signal drain? Do you think it could drain the battery this much?
Thanks,
Click to expand...
Click to collapse
It's impossible for me to say what's going on with the images you've already provided, they're not accurate. Run BBS for a day and post screenshots of the Other, Alarms, Kernel Wakelocks, and Partial Wakelocks screens.

Heisenberg said:
It's impossible for me to say what's going on with the images you've already provided, they're not accurate. Run BBS for a day and post screenshots of the Other, Alarms, Kernel Wakelocks, and Partial Wakelocks screens.
Click to expand...
Click to collapse
Cool. Thank you!