Develop Bugs

Post Your Battery Stats for Those Who Use Their Phone...

So every time I read a battery thread and someone mentions how well a ROM is on battery the pictures posted always show that the user is barely using his phone. They show a picture of their phone that shows it being unplugged for over a day and everyone gets excited and thinks their phone will last over 24 hours on a particular ROM or setup. Then when they do not see the same results they can't figure out why.
The answer is, as long as your device has no apps or bugs keeping it wake, if you don't use it, it will last. My EVO 4G could last 24 hours if I didn't touch it. The thing is once you started to use it it wasn't long before it was over!
So I would like to see pictures of battery life from people that actually use their phone so we can see what Roms truly are the best and what battery tweaks really do work. I am not interested on what Rom sleeps the best. I use my phone and don't need it to sleep for 2 days. If you cannot get to a charger within a 24 hour period, you have something else going on that you might need to address, lol.
Please post what Rom you are running and anything that might be installed that would effect battery life for good or bad.
I am running my phone stock. It has never been rooted. Below you will see after 12h/44m unplugged my battery is down to 26% with 4.5 hours on screen time. I was on wi-fi the entire time and also have an Airave in my house so signal did not play an issue with this stat.
I keep my phone on auto brightness, GPS is always on (doesn't effect battery like people think, only uses it when it needs to) and have my weather, news, and Twitter apps syncing every 3 hours. I have no battery hacks or software running. I also use ADW Launcher EX as my launcher. I know some launchers are better then others with battery and it doesn't seem like ADW drains much at all.
I look forward to screenshots and setups from other people so we can truly see what setup, Roms, and tweaks work best for battery from people who truly use their phone.....

On a typical day I get about 12-14 hours from 100 to 0 battery charge.

I kinda agree with op. I ran stock for 2weeks and i got the same performance as him. It was superb
Sent from my SPH-D710 using xda premium

my battery is garbage compared to you guys. i get about 8hrs on average with very light use. i still can't figure out why my awake time is through the roof. i have 2 gmail accounts set to push and 2 other email accounts set to pull once a day and fb & twitter set to sync every 4hrs. battery life is similar whether i'm at work with horrible in building reception or at home connected to wifi & an airave. i've learned to deal with plugging for a lil bit every so often throughout the day, but was expecting to get over 12hrs considering the way i use my phone. at first i thought i maybe received a bad phone, but it was the same after replacing the phone.
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stevedeezy said:
my battery is garbage compared to you guys. i get about 8hrs on average with very light use. i still can't figure out why my awake time is through the roof. i have 2 gmail accounts set to push and 2 other email accounts set to pull once a day and fb & twitter set to sync every 4hrs. battery life is similar whether i'm at work with horrible in building reception or at home connected to wifi & an airave. i've learned to deal with plugging for a lil bit every so often throughout the day, but was expecting to get over 12hrs considering the way i use my phone. at first i thought i maybe received a bad phone, but it was the same after replacing the phone.
Click to expand...
Click to collapse
It looks like your phone barely sleeps. It's awake most if the time. Seems like you need a replacement phone or try a different kernel.

cdszoke said:
It looks like your phone barely sleeps. It's awake most if the time. Seems like you need a replacement phone or try a different kernel.
Click to expand...
Click to collapse
Agreed, your awake time should match your on screen time or at last be close to it. Something is killing your battery. Check out better battery stats which you can download from xda to find your wakelock.

stevedeezy said:
my battery is garbage compared to you guys. i get about 8hrs on average with very light use. i still can't figure out why my awake time is through the roof. i have 2 gmail accounts set to push and 2 other email accounts set to pull once a day and fb & twitter set to sync every 4hrs. battery life is similar whether i'm at work with horrible in building reception or at home connected to wifi & an airave. i've learned to deal with plugging for a lil bit every so often throughout the day, but was expecting to get over 12hrs considering the way i use my phone. at first i thought i maybe received a bad phone, but it was the same after replacing the phone.
Click to expand...
Click to collapse
Great app to figure out whats going on & fix it,
Free lite version,
https://market.android.com/details?...1bGwsMSwxLDEwMiwibmV4dGFwcC5zeXN0ZW1wYW5lbCJd
I recommend going with pay version though
https://market.android.com/details?...sMSwxLDUwMCwibmV4dGFwcC5zeXN0ZW1wYW5lbC5yMSJd

sling said:
Great app to figure out whats going on & fix it,
Free lite version,
https://market.android.com/details?...1bGwsMSwxLDEwMiwibmV4dGFwcC5zeXN0ZW1wYW5lbCJd
Click to expand...
Click to collapse
i just installed the lite version but have no idea how to read the stats yet. hopefully i can figure it out and find whats draining my battery.

stevedeezy said:
i just installed the lite version but have no idea how to read the stats yet. hopefully i can figure it out and find whats draining my battery.
Click to expand...
Click to collapse
The paid version has a monitoring feature you would need which is not included in the free version. I do not believe you can find the problem with the free version. Check out the app I recommended above, betterbatterystats.

stevedeezy said:
my battery is garbage compared to you guys. i get about 8hrs on average with very light use. i still can't figure out why my awake time is through the roof. i have 2 gmail accounts set to push and 2 other email accounts set to pull once a day and fb & twitter set to sync every 4hrs. battery life is similar whether i'm at work with horrible in building reception or at home connected to wifi & an airave. i've learned to deal with plugging for a lil bit every so often throughout the day, but was expecting to get over 12hrs considering the way i use my phone. at first i thought i maybe received a bad phone, but it was the same after replacing the phone.
Click to expand...
Click to collapse
So you are not constantly checking your phone?

leyvatron said:
So you are not constantly checking your phone?
Click to expand...
Click to collapse
no, not at all. i guess i really need to figure out what is causing my awake time & wifi statistic to not be on par with my screen on statistic. i've had my phone for just over 3 weeks now and learned to sort of deal with it, but after reading a few more threads about it, i'm concerned again.
This is what i currently have syncing:
2 gmail accounts - set to push
2 pop3 accounts - set to pull once a day
1 google calendar account - auto sync unchecked
facebook - 4hr refresh interval w/ notifications active
twitter - 4hr sync interval
and all native google apps that may sync in the background

This is what I got:

Here's mine. I didn't use my phone as much today as I usually do. But screen was at max brightness when I was using it and WiFi was only connected while I was at home. It was on but off except when searching for open signal otherwise. I'm using calkulins new Rom and haven't changed anything except that I'm running a live wallpaper and have all the sns crap and drm crap frozen
Sent from my SPH-D710 using xda premium

to the OP, the 12hrs with 4.5 hours of display on time is great
i can get 12hrs, but probably with 2-3 hours max of screen time
got 9 hours today with calcukin

Running stock. I have a heavy use screenshot with 4g on and everything syncing along with loads of calls,texts, and games. Also a screenshot of light use for comparison.
Sent from my Galaxy SII using XDA App.

Zoidpilot said:
Running stock. I have a heavy use screenshot with 4g on and everything syncing along with loads of calls,texts, and games. Also a screenshot of light use for comparison.
Sent from my Galaxy SII using XDA App.
Click to expand...
Click to collapse
looks like your wifi was on instead of 4G?
4g radio is biggest hog, cant believe you have 4g on all the time and got 12 hours out of it
and it shows 3% accounts for calls,unless for "load of" you mean texts and games

You guys are also forgetting about screen brightness and also signal. If you are in a low signal area you will get less life.
I just had to plug mine in at 3%. I lasted about 14hrs on what I consider moderate use.
Sent from my SPH-D710 using xda premium

at 13.5 hours and 3.5 hours of screen on time still at 25% batt on 3g the whole time.
Sent from my Galaxy S2

Was at school using 3g with heavy Web surfing for two hours.phone went to 50 percent with low brightness lol. My phone can last from 6 hours to 24 hours depending on usage.
If I don't touch my phone often with everything of and 3g on once abbrev a while it can last around a day
Sent from my SPH-D710 using xda premium

Zoidpilot said:
Running stock. I have a heavy use screenshot with 4g on and everything syncing along with loads of calls,texts, and games. Also a screenshot of light use for comparison.
Sent from my Galaxy SII using XDA App.
Click to expand...
Click to collapse
I call bull****!
One has 20hrs with around 50% bat left and the other has 11hrs with around 90% bat left.

Galaxy Nexus Battery Fix

Hi,
I just got my Galaxy Nexus, flashed with AOKP build 18 and i gotta say that the battery life is unacceptable. It drops 10% in less then 1h while the phone is sitting there doing nothing. Wifi, bluetooth, location services, GPS are off. All background apps closed.
It lasts about half the time my iPhone 4 does and it is a year and half old.
I see some people showing examples of how their battery last for more then 20h but all these are BS tests as they leave the phone on standby all day or have some very light usage.
Is there a real fix for this? Am i forced to drop another 50$ and buy Samsung's 2100mh extended battery?
btw i tried setCPU also to lower CPU to minimum when in standby but doesnt do much. I want a solution that will enable me to use my phone, not something that makes it last 40h in standby and then kills it in 2h when i use it.
please help!

So everyone that posts four hours of screen on time is bullshitting? Did you know the first 10% isn't even that accurate? If you're on Verizon turn off LTE. If you're on GSM and you don't get three hours of screen on time you have an app that is killing your battery. It is as simple as that.
Sent from my Galaxy Nexus using xda premium

Try toggling Bluetooth on and then off, then grab CpuSpy from the market and check out if the CPU is pegged at a certain speed.
Some builds of ALL the custom ROMs have had issues where the phone wont sleep correctly, high %-age of Android System process, etc.
I disagree that its silly to talk about idle time on battery, because idle time is the closest we can all get to apples to apples comparison. We all USE our phones differently, the closest we come to using them the same is when they are just sitting there idle (not quite exact because some people sync data, some people only have 3G, etc, but a lot closer than person A playing games for 3 hours at a clip vs person B browsing for 3 hours)
I *still* havent seen anyone come up with a template like setup to report battery life. Like you said it does me no good to know someone dropped 3% "overnight" without knowing how long "overnight" is, if they had 3g/4g/Wifi enabled or even disabled completely, sync on/off, etc.
Personally, Ive seen 1.5%/hr drop with my phone idle. Running AOKP b19, LeanKernel, interactivex governor, undervolted (-75 mA at each level from 180 mhz to 1200 mhz), 4G on, BT on, GPS on, sync on (1 gmail account).
I imagine with all that stuff running 1.5%/hr isnt half bad. Screen on time isnt incredible but its not bad, but again my screen on activities can (and probably will) be different than your screen on activities so take that with several grains of salt.

joshnichols189 said:
So everyone that posts four hours of screen on time is bullshitting? Did you know the first 10% isn't even that accurate? If you're on Verizon turn off LTE. If you're on GSM and you don't get three hours of screen on time you have an app that is killing your battery. It is as simple as that.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
It's not the first 10%, it's all the time.. it drops for about 10% or more every hour. Less then 3h of screen time.
I'll give cpuspy a try and see if some app is killing my battery.
I used AOKP rom because most of the people in the thread were saying that rom fixed their battery issue but for me it made no difference.

angeluszero said:
It's not the first 10%, it's all the time.. it drops for about 10% or more every hour. Less then 3h of screen time.
I'll give cpuspy a try and see if some app is killing my battery.
I used AOKP rom because most of the people in the thread were saying that rom fixed their battery issue but for me it made no difference.
Click to expand...
Click to collapse
Yea somethings not right. Off charge at 8am and its 4:30pm now. Got 61% left at time of this writing and been using it quite alot. Typically have about 75% left about this time.
I just use an AOKP like yourself and a custom kernel. I'm on the phone like every 15min reading emails, SMS, word feud, twitter news, Facebook, Gmail.
LTE EX Galaxy Nexus - AOSP KANG
Asus Transformer - 3.2.1 OC/UV

It's actually 2000 mAh not 2100 mAh.
You can use a custom kernel such as Franco Kernel. New version came out today and includes more battery improvements (according to changelog!)

My phone essentially sits idle unless my screen is on...
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As you can see, if my screen is on the graph drops, when it's off the graph flattens out and the battery barely moves. I used to be sick to my stomach of the battery life until I realized it was because I wouldn't put the phone down and always had the screen on thus killing the battery.
Sent from my Galaxy Nexus using XDA App

Powell730 said:
My phone essentially sits idle unless my screen is on...
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
Just a word of advice. Whites consume more power on AMOLED screens. You'd probably maximize your battery a lot more if you went back to a "Ice Cream Sandwich" feel or at least apply a black themed MIUI.

angeluszero said:
It's not the first 10%, it's all the time.. it drops for about 10% or more every hour. Less then 3h of screen time.
I'll give cpuspy a try and see if some app is killing my battery.
I used AOKP rom because most of the people in the thread were saying that rom fixed their battery issue but for me it made no difference.
Click to expand...
Click to collapse
I had something similar and it was recommended to me on these forums that I log out of Gtalk.
Before people come out and say it makes no sense - it doesn't really matter if it does or not - it worked for me. I get a full day out of a charge now, which doesn't really matter because as someone said above it's all relative. What DOES matter is that my phone is now sleeping properly, so the battery doesn't drain when the phone is idle. That's the part that wasn't working on my phone.
If you feel so inclined, give this a try and see if it works for you. Just log out of all Google talk accounts and see how your battery life is - you'll know within a day if it's helping.

Have you flashed the new radios yet?
You can also try different kernels and see which one works best for you.

zephiK said:
Just a word of advice. Whites consume more power on AMOLED screens. You'd probably maximize your battery a lot more if you went back to a "Ice Cream Sandwich" feel or at least apply a black themed MIUI.
Click to expand...
Click to collapse
Yeah I just installed this today, giving it a trial run. It's OK so far.. I think just growing pains so far. Also, I don't think themes work just yet.. At least last I saw.
Sent from my Galaxy Nexus using XDA App

Powell730 said:
Yeah I just installed this today, giving it a trial run. It's OK so far.. I think just growing pains so far. Also, I don't think themes work just yet.. At least last I saw.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
Ah okay.
I think MIUI is pretty much at the same state as CM9. Just lots of work needing to be done since ICS revamped Android in so many ways.

zephiK said:
It's actually 2000 mAh not 2100 mAh.
You can use a custom kernel such as Franco Kernel. New version came out today and includes more battery improvements (according to changelog!)
Click to expand...
Click to collapse
not quite.
can i preface by saying that there are two types of Gnexus's out there? the SCH-i515 (CDMA/LTE Verizon) and the GT-i9250 (HSPA+, AT&T).
The 2000mAh is for the HSPA+ version
The 2100mAh is for the LTE version.
i see a LOT of bad advice on these forums here.
my best advice to you (from one Verizon Nexus owner to another), is to keep at stock 4.0.2. Root it, and apply a custom kernel. Only apply custom kernel if you feel that you're still not getting decent battery life for a whole day on 4G stock ROM/kernel.
As far as I know, Verizon Nexus owners' max on-screen time with 4G enabled all day is about 3 hours MAX, and thats if you disable everything else but LTE, with very low brightness settings, and on extended battery.
imo, the next 4.0.3 or 4.0.4 update hopefully will mitigate some battery consumption issues.

aohus said:
As far as I know, Verizon Nexus owners' max on-screen time with 4G enabled all day is about 3 hours MAX, and thats if you disable everything else but LTE, with very low brightness settings, and on extended battery.
Click to expand...
Click to collapse
Are you talking about 3 hours MAX browsing or just being POWERED ON?
If you are talking about just being on for 3 hours, you are GROSSLY incorrect.

angeluszero said:
Hi,
I just got my Galaxy Nexus, flashed with AOKP build 18 and i gotta say that the battery life is unacceptable. It drops 10% in less then 1h while the phone is sitting there doing nothing. Wifi, bluetooth, location services, GPS are off. All background apps closed.
It lasts about half the time my iPhone 4 does and it is a year and half old.
I see some people showing examples of how their battery last for more then 20h but all these are BS tests as they leave the phone on standby all day or have some very light usage.
Is there a real fix for this? Am i forced to drop another 50$ and buy Samsung's 2100mh extended battery?
btw i tried setCPU also to lower CPU to minimum when in standby but doesnt do much. I want a solution that will enable me to use my phone, not something that makes it last 40h in standby and then kills it in 2h when i use it.
please help!
Click to expand...
Click to collapse
See my screen on time?
4 hours screen on time including 21 minutes using gps for Sygic Navigation is not bull****. Stand by for up to 61 hours, easy.
And I was using the phone extensively for web browsing, facebook, gplus, xda, games, etc.
All with stock rom and stock kernel, extended battery 2000mAh, gsm.
No BS
Sent from my Galaxy Nexus using xda premium

gogol said:
See my screen on time?
4 hours screen on time including 21 minutes using gps for Sygic Navigation is not bull****. Stand by for up to 61 hours, easy.
And I was using the phone extensively for web browsing, facebook, gplus, xda, games, etc.
All with stock rom and stock kernel, extended battery 2000mAh, gsm.
No BS
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
You were on wifi the entire day.
You are using the HSPA+ version of the Nexus. HSPA+ version gets better battery life.
Try being on HSPA+ the entire day with wifi disabled. you will not be getting 4 hours of battery life on-screen time.
z06mike said:
Are you talking about 3 hours MAX browsing or just being POWERED ON?
If you are talking about just being on for 3 hours, you are GROSSLY incorrect.
Click to expand...
Click to collapse
Please reread what i wrote. MAX ON-SCREEN TIME.
it is not possible to go 4 hours of on-screen time with LTE enabled all day.

aohus said:
You were on wifi the entire day.
You are using the HSPA+ version of the Nexus. HSPA+ version gets better battery life.
Try being on HSPA+ the entire day with wifi disabled. you will not be getting 4 hours of battery life on-screen time.
Please reread what i wrote. MAX ON-SCREEN TIME.
it is not possible to go 4 hours of on-screen time with LTE enabled all day.
Click to expand...
Click to collapse
Most of the time I was on wifi, but not all.
But fair enough, I will test on 100% without WiFi. However, we don't have HSDPA+ unfortunately. Only HSDPA or 3G.
Sent from my Galaxy Nexus using xda premium

aohus said:
You were on wifi the entire day.
You are using the HSPA+ version of the Nexus. HSPA+ version gets better battery life.
Try being on HSPA+ the entire day with wifi disabled. you will not be getting 4 hours of battery life on-screen time.
Please reread what i wrote. MAX ON-SCREEN TIME.
it is not possible to go 4 hours of on-screen time with LTE enabled all day.
Click to expand...
Click to collapse
I went 13 hours yesterday with LTE on all day and had almost 4 hours of screen on time. I'm running stock ICS unrooted and all of my sync stuff is enabled. I'm also using the extended battery.
Sent from my Galaxy Nexus

johnbibbs said:
I went 13 hours yesterday with LTE on all day and had almost 4 hours of screen on time. I'm running stock ICS unrooted and all of my sync stuff is enabled. I'm also using the extended battery.
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
would like proof. afaik, its impossible to get 4 hours of battery life with LTE enabled all day.
sounds dumb, but are you sure you have Verizon's GNexus? Your profile shows an AT&T carrier... otherwise you should probably update it.

player911 said:
Yea somethings not right. Off charge at 8am and its 4:30pm now. Got 61% left at time of this writing and been using it quite alot. Typically have about 75% left about this time.
I just use an AOKP like yourself and a custom kernel. I'm on the phone like every 15min reading emails, SMS, word feud, twitter news, Facebook, Gmail.
LTE EX Galaxy Nexus - AOSP KANG
Asus Transformer - 3.2.1 OC/UV
Click to expand...
Click to collapse
I think the Kernel is what makes the difference. It seems to be the only difference i see between myself and the people like you have a reasonable battery life.
which one do you recommend? And i'm a noob at this so could you point me to a thread the explains how to flash it? If u cant its ok im sure i can figure it out.

Save Your battery

Well folks, I took time to study our G2 battery to really see what is killing it. After testing it on different roms i have come out with something that can save your battery for a while before you think of replacing it.
On a general scope these are the main factors that really drain your battery:
1.3G data connection
2.Screen brightness
3.Rom type(mostly sense roms)
On 3g, if the user has a wireless network nearby i suggest you connect to that for your browsing and all that, there is no need using hspa when you have a WI-fi network working great, 3g networks drains the battery faster than you think i tried it and i saw that the WI-fi use was very slow in draining the battery up to the point i switch to 3g. IF your thing is voice calls i still don't see how good and different 3g is from 2g "it's not like you are recording an album over the phone to need such voice clarity" remember a good battery life affects your phones performance in a great way. these photos tell the whole story..
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i used the wi-fi for about 12 hours and when i switched to 3g it drained in 2 hours
For screen brightness you will notice that every time you check battery usage your screen always has the biggest share of the consumption. You have to reduce your screen brightness to 30% or lower or put it on auto-brightness that's about all you can do about it.
Also your rom and the kernel it comes with are a huge factor in battery consumption. On a general scale i have noticed that sense roms are the big killers of all just see
in 51 mins of no use at all just screen off the battery drops to 81% i have never had above 9 hours of use with any sense rom
Other things like gps also drain your battery, so if you are not on "MAPS" just switch it off to save your battery. Also keeping your cpu clock speed at high points drain the battery a lot try to use apps like setcpu to control the clock speed and set profile like screen off to keep your cpu down when you are not using it, and use cpu governors like smatass, ondemand, conservative etc
Also the trick of draining your battery completely and then recharging it in intervals of 3 months or more help enhance battery life,
do not leave lots of apps running in the back ground they also drain you battery alot :good:
Any body who knows something that can help pls add cos there are a lot of guys who still don't know these stuff....
and a lot of guys like me who still want to enjoy their G2 for a looooong time....so big boys...yes it's needed......

photos missing.......................................................................................................

About the sense roms, even though i agree it consumes more battery than AOSP, they are not as bad as u say (at least not all of them). I use a sense 3.5 rom and with regular use i get about a day and a half before it hits 20% (80% consumed) (This is on 2g, with wifi on... when with data on, i still get at least 22 hours). I know it comes down to settings and usage, but just saying, its possible to get a lot of battery endurance with sense.
If anyone is interested in more detalied information on my settings and usage, feel free to ask me (through pm if possible)
Nice review though, thanks for sharing!
Coldsun15

strip419 said:
Also your rom and the kernel it comes with are a huge factor in battery consumption. On a general scale i have noticed that sense roms are the big killers of all just see
in 51 mins of no use at all just screen off the battery drops to 81% i have never had above 9 hours of use with any sense rom
Click to expand...
Click to collapse
This is impossible if you havent got a problem with the rom. I have been using all kinds of roms with my Desire Z. The battery life is not that much different on sense and aosp roms.
I am using GenY Beta5 right now for example. On standby mode (only gps is disabled) it can go more than 2 days! A stock optimized 2.1 Sense rom can go even more than that.
For battery life problems I suggest using an app like Better Battery Stats and see what is causing your phone to stay awake. It is easy to see what eats your battery.
Other than that as you said, whatever rom you use Screen will eat your battery the most. Overclocking will obviously eat more battery too. Using 3G instead of 2G will use more battery. COnstant Wi-fi activity and gps are battery killers too as you may guess.
The rest is how the user uses his/her phone.

strip419 said:
Well folks, I took time to study our G2 battery to really see what is killing it. After testing it on different roms i have come out with something that can save your battery for a while before you think of replacing it.
On a general scope these are the main factors that really drain your battery:
1.3G data connection
2.Screen brightness
3.Rom type(mostly sense roms)
On 3g, if the user has a wireless network nearby i suggest you connect to that for your browsing and all that, there is no need using hspa when you have a WI-fi network working great, 3g networks drains the battery faster than you think i tried it and i saw that the WI-fi use was very slow in draining the battery up to the point i switch to 3g. IF your thing is voice calls i still don't see how good and different 3g is from 2g "it's not like you are recording an album over the phone to need such voice clarity" remember a good battery life affects your phones performance in a great way. these photos tell the whole story..
i used the wi-fi for about 12 hours and when i switched to 3g it drained in 2 hours
For screen brightness you will notice that every time you check battery usage your screen always has the biggest share of the consumption. You have to reduce your screen brightness to 30% or lower or put it on auto-brightness that's about all you can do about it.
Also your rom and the kernel it comes with are a huge factor in battery consumption. On a general scale i have noticed that sense roms are the big killers of all just see
in 51 mins of no use at all just screen off the battery drops to 81% i have never had above 9 hours of use with any sense rom
Other things like gps also drain your battery, so if you are not on "MAPS" just switch it off to save your battery. Also keeping your cpu clock speed at high points drain the battery a lot try to use apps like setcpu to control the clock speed and set profile like screen off to keep your cpu down when you are not using it, and use cpu governors like smatass, ondemand, conservative etc
Also the trick of draining your battery completely and then recharging it in intervals of 3 months or more help enhance battery life,
do not leave lots of apps running in the back ground they also drain you battery alot :good:
Any body who knows something that can help pls add cos there are a lot of guys who still don't know these stuff....
and a lot of guys like me who still want to enjoy their G2 for a looooong time....so big boys...yes it's needed......
Click to expand...
Click to collapse
All you are saying are basic stuff everyone knows about power consumption, and all that you have been testing are YOUR results, what you are saying now are absolutely no facts, and some are wrong. You're saying sense takes more juice? Well since IceCreamSandwich it doesn't really matter. Are you sure your battery is properly calibrated?
After installing a rom you shouldn't put the phone on a charger, but just use/leave it till the battery has 10% left. then charge till its full. By prefer you should do it another time and then it should be calibrated.
Also you forgot to add the radio. The radio is also important, if you got a proper radio for your provider/rom, you can easily get more power out of your phone. If you have the wrong one, drains can be high. The extremest example I can take is my old HD2. Which had a radio not compatible with the version of android and the battery drained from 100 - 10 in 3 hours.
Now look at my stats of my DesireZ, running Gen.Y RC1(Which seems to be using more battery then the B5). I attached a screenshot. The battery is totally stock and not an extended one. I used it yesterday at home when I was busy with my car(whatsapp, mail, google), at the evening I played some games. Before I went to bed my battery stats was 60%, when I got out of bed this morning it was 59%.
Also I think the topic should be in "general" since its talking about everything, and I can't see how this is rom development.

Thanks for adding up guys,but I am sure your batteries are quite fresh that's why you have very good batteries,people like me with aging ones who still want to use it for a while. I had to wipe my battery stats a few times to calibrate it. And if your read things very well this was meant for guys who really don't know the does and donts about battery usage yes it's basic but people still ask these questions in dev sections. I did not add radio because that thing does not work well for everyone and it's still an easy way to brick your phone most of these radios were made with USA service providers in mind ,people have complained about having serious issues with battery and connectivity when they Change their radio and if any one is even reading this then I don't think that person even knows what the radio is so why not do the basics than brick your phone in an attempt to go high .....to the big boys who know all.... you have to know that there are still guys out there without rooted phones facing these problems so radio is the last option......
Sent from my HTC Vision using xda app-developers app

strip419 said:
Thanks for adding up guys,but I am sure your batteries are quite fresh that's why you have very good batteries,people like me with aging ones who still want to use it for a while. I had to wipe my battery stats a few times to calibrate it. And if your read things very well this was meant for guys who really don't know the does and donts about battery usage yes it's basic but people still ask these questions in dev sections. I did not add radio because that thing does not work well for everyone and it's still an easy way to brick your phone most of these radios were made with USA service providers in mind ,people have complained about having serious issues with battery and connectivity when they Change their radio and if any one is even reading this then I don't think that person even knows what the radio is so why not do the basics than brick your phone in an attempt to go high .....to the big boys who know all.... you have to know that there are still guys out there without rooted phones facing these problems so radio is the last option......
Sent from my HTC Vision using xda app-developers app
Click to expand...
Click to collapse
If their phone is not rooted, how can they have a custom rom then lol. I think if you want to use a custom rom on your phone you should read everything and not blindly start everything. Also flashing a radio has risks, but not really something to worry about if you do it right. Its quite easy and as long as you stay on the right path you are fine. If you want to make a proper thread about battery consumption you should include the radio thing. And also post it in a place where it belongs. You are right that newbies don't know everything, but if we should do everything for them, you get even more newbie questions. They need to put some effort in it like we do.

also you have not added the tricks like changing the advanced wifi to always wifi when screen off....

Note 2 Problems: After Official Updates

Hi! Guys, Well I bought my Note 2 in November 2012 with Multi Window update already Installed. Everything was So smooth and awesome until the Christmas update in India. My battery started draining comparatively fast but still not a huge change. But handset became little slow. That I consider Negligible. But then come the Jan update which I feel was quickly done to rectify that "root permission by default issue" like in S3. And after that am facing Issues like fast battery drain like previously when I used to sleep my battery drop by 1% only but for same amount of time when I check on waking up it had gone down by 7-8% and haven't installed any new apps so far.
But the biggest issue I face is that Note 2 won't charge sometimes then I have to restart my mobile and then it charges again and it happens quite often. Like I will face this 3-4 times in between 10 cycles of charging.
My Note 2 is not rooted for now.
Also a issue I have noticed that sometimes my camera images becomes corrupt on its own. This happened only 2 times though.
So, guys do share your advice/views on this.
Thanks
Also I have noticed that some times blue led blinks on its own. without any notification. And Smart alert doesn't go off, faced this rarely though.

ishaan_chd88 said:
Hi! Guys, Well I bought my Note 2 in November 2012 with Multi Window update already Installed. Everything was So smooth and awesome until the Christmas update in India. My battery started draining comparatively fast but still not a huge change. But handset became little slow. That I consider Negligible. But then come the Jan update which I feel was quickly done to rectify that "root permission by default issue" like in S3. And after that am facing Issues like fast battery drain like previously when I used to sleep my battery drop by 1% only but for same amount of time when I check on waking up it had gone down by 7-8% and haven't installed any new apps so far.
But the biggest issue I face is that Note 2 won't charge sometimes then I have to restart my mobile and then it charges again and it happens quite often. Like I will face this 3-4 times in between 10 cycles of charging.
My Note 2 is not rooted for now.
Also a issue I have noticed that sometimes my camera images becomes corrupt on its own. This happened only 2 times though.
So, guys do share your advice/views on this.
Thanks
Click to expand...
Click to collapse
You can TRY flash the latest FIRMWARE using ODIN... I'm not sure whether it will solve the battery drain issue but you cab try, but I personally think it's not too big difference...
For the battery drain issue, here is my suggestions:
1. Flash CUSTOM KERNEL, do undervolting your device, which I believe will significantly reduce the power usage...
2. Try use ONE POWER GUARD apk, I optimize the kernel and CPU, and other stuffs (Wi-Fi, 3G...) It's available in Google Play.
3. (I think you really need this if your battery is behaving as you mentioned) Do battery calibration, download BATTERY CALIBRATION in Google Play, charge your phone to 100%, open the app and tap BATTERY CALIBRATION. After that drain your battery until it switch off automatically, and charge your phone to 100% again in off mode...
And I'm so sorry to tell you that you need ROOT access then you only can try these solutions...
I also had battery drain issue before, but I found out that if you use all my suggestions, the battery life does INCREASE!
I flashed Perseus Kernel and undervolted my device using SET CPU... Battery drains about 6-8% in an hour with my Wi-Fi ON, Auto Brightness, and without turning off the screen to surf the WEB!
After that, I found out that my battery also drains about 7-10% after a whole night deep sleep, when I wake up in the morning.
I found the second solution, which is using the ONE POWER GUARD. Now, the battery life IMPROVES EVEN MORE! Now when I wake up to check my device, a whole night sleep is just draining 2-3% the most!
Thirdly, I accidentally found the Battery Calibration app in the Google Play...
I tried that but no difference, since you only need to use it when your battery starts to have problem (Others comment)
You can try this, I saw many good feetbacks from many users that it helps...
Now, I open my Wi-Fi all the time with Auto Brightness. I enjoy my music, video, web ever day. I finished charge my phone in 9 am yesterday, and now, I still have 51% to use XDA app to write this post Amazing isn't it!
ROOT YOUR PHONE, IT DEFINITELY WORTH TO SAVE YOUR BATTERY BY USING THESE SOLUTIONS... (My Opinion)
TRY THEM OUT BRO! GOOD LUCK
Sent from my GT-N7100 using xda premium

takumibunta said:
You can TRY flash the latest FIRMWARE using ODIN... I'm not sure whether it will solve the battery drain issue but you cab try, but I personally think it's not too big difference...
For the battery drain issue, here is my suggestions:
1. Flash CUSTOM KERNEL, do undervolting your device, which I believe will significantly reduce the power usage...
2. Try use ONE POWER GUARD apk, I optimize the kernel and CPU, and other stuffs (Wi-Fi, 3G...) It's available in Google Play.
3. (I think you really need this if your battery is behaving as you mentioned) Do battery calibration, download BATTERY CALIBRATION in Google Play, charge your phone to 100%, open the app and tap BATTERY CALIBRATION. After that drain your battery until it switch off automatically, and charge your phone to 100% again in off mode...
And I'm so sorry to tell you that you need ROOT access then you only can try these solutions...
I also had battery drain issue before, but I found out that if you use all my suggestions, the battery life does INCREASE!
I flashed Perseus Kernel and undervolted my device using SET CPU... Battery drains about 6-8% in an hour with my Wi-Fi ON, Auto Brightness, and without turning off the screen to surf the WEB!
After that, I found out that my battery also drains about 7-10% after a whole night deep sleep, when I wake up in the morning.
I found the second solution, which is using the ONE POWER GUARD. Now, the battery life IMPROVES EVEN MORE! Now when I wake up to check my device, a whole night sleep is just draining 2-3% the most!
Thirdly, I accidentally found the Battery Calibration app in the Google Play...
I tried that but no difference, since you only need to use it when your battery starts to have problem (Others comment)
You can try this, I saw many good feetbacks from many users that it helps...
Now, I open my Wi-Fi all the time with Auto Brightness. I enjoy my music, video, web ever day. I finished charge my phone in 9 am yesterday, and now, I still have 51% to use XDA app to write this post Amazing isn't it!
ROOT YOUR PHONE, IT DEFINITELY WORTH TO SAVE YOUR BATTERY BY USING THESE SOLUTIONS... (My Opinion)
TRY THEM OUT BRO! GOOD LUCK
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Thanks a lot for your suggestions.Will definitely gonna try these. And will surely root my phone once I get proper time to perform this ..
Yep I also think that these are cause of new kernel which samsung released hurriedly.
Will Contact Samsung and see what they gonna say.
And I checked my battery drain today with wifi & 3g off, Screen rotation off, sync disabled,location disabled,All motion disabled, pen detection battery save on but still ate my 5% of battery that too in sleep mode. Samsung's New updates have lot of bugs.
will root my mobile and will see how it performs. Thanks again for your valuable suggestion.
Ps;- I have also added some forgotten issues in my original post.

http://forum.xda-developers.com/showthread.php?t=2107312&highlight=battery+drain
A lot of people complain of battery drain with their latest updates. I'm personally not too happy with it, but my device still lasts a whole day. I'll give Samsung another update to fix the issue. If they don't, I'm going back to 4.1.1 because I never had any issues there.
I've done a hard reset and nothing. Next time I'll try clearing all data and everything off of my storage and we'll see. Hopefully Samsung will fix this.

zkyevolved said:
http://forum.xda-developers.com/showthread.php?t=2107312&highlight=battery+drain
A lot of people complain of battery drain with their latest updates. I'm personally not too happy with it, but my device still lasts a whole day. I'll give Samsung another update to fix the issue. If they don't, I'm going back to 4.1.1 because I never had any issues there.
I've done a hard reset and nothing. Next time I'll try clearing all data and everything off of my storage and we'll see. Hopefully Samsung will fix this.
Click to expand...
Click to collapse
Indeed Samsung's new update has numerous bugs, hope they will fix it soon. 4.1.1 was Flawless.
And I doubt that clearing all the data will help as battery drain will be related to the new kernel and OS.
Let's see when will Samsung gonna release there new update to fix these issues.

I flashed the new MA6 French firmware, seems many MODs and Custom ROMs are released/updated based on this firmware...
I will see how it goes, I still using Perseus kernel, and ONE POWER GUARD.
So far, the results are not sure because now I have only tested it for 2 hours...
Hope it doesn't drain much battery... :laugh:
---------- Post added at 02:48 AM ---------- Previous post was at 02:40 AM ----------
ishaan_chd88 said:
Thanks a lot for your suggestions.Will definitely gonna try these. And will surely root my phone once I get proper time to perform this ..
Yep I also think that these are cause of new kernel which samsung released hurriedly.
Will Contact Samsung and see what they gonna say.
And I checked my battery drain today with wifi & 3g off, Screen rotation off, sync disabled,location disabled,All motion disabled, pen detection battery save on but still ate my 5% of battery that too in sleep mode. Samsung's New updates have lot of bugs.
will root my mobile and will see how it performs. Thanks again for your valuable suggestion.
Ps;- I have also added some forgotten issues in my original post.
Click to expand...
Click to collapse
I'm glad you appreciate it
Maybe you can state all of your issues, I will try to help :victory:
I'm always sensitive to my device, every time when I feel that battery drains faster than before, I will always find out what was the problem that caused battery drains...
It's kinna pain in the ass to see battery drops faster than the first time I used the device.
So far, those suggestions that I've provided are my "BEST" solutions. (My opinion)
I will also continue to monitor my device after flashed the new MA6 French firmware...
I will see how is the results and share my experiences to you all (For those who would like to listen... If I am wrong, please don't blame me and I'm sorry)
:good:

takumibunta said:
I flashed the new MA6 French firmware, seems many MODs and Custom ROMs are released/updated based on this firmware...
I will see how it goes, I still using Perseus kernel, and ONE POWER GUARD.
So far, the results are not sure because now I have only tested it for 2 hours...
Hope it doesn't drain much battery... :laugh:
---------- Post added at 02:48 AM ---------- Previous post was at 02:40 AM ----------
I'm glad you appreciate it
Maybe you can state all of your issues, I will try to help :victory:
I'm always sensitive to my device, every time when I feel that battery drains faster than before, I will always find out what was the problem that caused battery drains...
It's kinna pain in the ass to see battery drops faster than the first time I used the device.
So far, those suggestions that I've provided are my "BEST" solutions. (My opinion)
I will also continue to monitor my device after flashed the new MA6 French firmware...
I will see how is the results and share my experiences to you all (For those who would like to listen... If I am wrong, please don't blame me and I'm sorry)
:good:
Click to expand...
Click to collapse
Same with me, it pinches me a lot to see my battery draining faster than before. And even I try to keep Hawk's eye on what's gulping my battery but so far I ll only blame it on new official samsung kernels.
But Well I guess Samsung has heard the cries of people and today I received two updates(OTA) mentioning Stability update. Hope this fixes this battery drain and other bugs. Also, now they included Google Play Music App in the update.
And after 4 hours of the update, battery life, I feel that it still draining quite fast but will test it in 2-3 days to be sure. Will update after few days of usage.
And thanks again for taking time to share your suggestions

Looks like the update was kinda dissapointed... It is quite battery draining after a day...
But I did try battery calibration as my solution, looks like is kinna sweet.
I charged my phone until 100% full this morning 11am and did battery calibration, now I still have 72% after listening music, surfing facebook, instagram, and twitter, with Wi-Fi on all the time and Auto Brightness on...
Anyone tried anything else?
Sent from my GT-N7100 using xda premium

Im about to open thread but I saw yours so I decided to put my own issue.
I just upgraded my sofware from 4.1.1 to 4.1.2 France rom. Factory wipe before and after upgrade and first thing noted battery drain. I would specifically note SCREEN ON is eating my battery. 19 hours max i could get which comparing to old rom was day and half with exact same apps and settings.Who faced the same thing and who managed to resolve it?
Please see my battery screen shots
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"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
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Sent from my GT-N7100 using Tapatalk 2

takumibunta said:
Looks like the update was kinda dissapointed... It is quite battery draining after a day...
But I did try battery calibration as my solution, looks like is kinna sweet.
I charged my phone until 100% full this morning 11am and did battery calibration, now I still have 72% after listening music, surfing facebook, instagram, and twitter, with Wi-Fi on all the time and Auto Brightness on...
Anyone tried anything else?
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Yep new updates doesn't resolve battery drain issue very much but its still better than before. During my sleep for around 8 hours, battery drain was just 2%, I was so happy but during normal usage, I still feel battery drain is little on higher side. I guess new updates do increase standby time but while on load it just doesn't performs like it used to be on 4.1.1.
That's sweet, you manage to get a lot of juice by those calibration. Currently Charging my phone and will see how it performs after a full charge cycle.

zevozki said:
Im about to open thread but I saw yours so I decided to put my own issue.
I just upgraded my sofware from 4.1.1 to 4.1.2 France rom. Factory wipe before and after upgrade and first thing noted battery drain. I would specifically note SCREEN ON is eating my battery. 19 hours max i could get which comparing to old rom was day and half with exact same apps and settings.Who faced the same thing and who managed to resolve it?
Please see my battery screen shots
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Well, 4.1.2 do drains a lot of juice from battery when compared to 4.1.1. Almost every Note2 has been plagued with this after updating to 4.1.2. That's kinda shame for Samsung that their new updates are battery juice guzzler.
And to resolve this battery drain issue you can wait for samsung to fix this in new updates or you can root and then install custom kernels and roms. And also please go through takumibunta's posts above, He shared very nice points to resolve battery drain issue.

have any of the ones who updated checked for sensors of movement and like that? i updated to avoid the SDS but after the first day I noticed that my phone was draining faster. I checked some things and some of them have been changed with the update (movement sensors is the only one that i can remember now) and now it last the same than before with some apps more such as xda app which it is said that drains also some battery
Hope it was just that the issue good luck!
Enviat des del meu GT-N7100

ishaan_chd88 said:
Well, 4.1.2 do drains a lot of juice from battery when compared to 4.1.1. Almost every Note2 has been plagued with this after updating to 4.1.2. That's kinda shame for Samsung that their new updates are battery juice guzzler.
And to resolve this battery drain issue you can wait for samsung to fix this in new updates or you can root and then install custom kernels and roms. And also please go through takumibunta's posts above, He shared very nice points to resolve battery drain issue.
Click to expand...
Click to collapse
What is the method used for battery calibration?
Sent from my GT-N7100 using Tapatalk 2
---------- Post added at 10:23 PM ---------- Previous post was at 10:15 PM ----------
aka_sirok said:
have any of the ones who updated checked for sensors of movement and like that? i updated to avoid the SDS but after the first day I noticed that my phone was draining faster. I checked some things and some of them have been changed with the update (movement sensors is the only one that i can remember now) and now it last the same than before with some apps more such as xda app which it is said that drains also some battery
Hope it was just that the issue good luck!
Enviat des del meu GT-N7100
Click to expand...
Click to collapse
Can you advice where is this sensor menu so I can check?
Sent from my GT-N7100 using Tapatalk 2

just go to movement in settings and click into the leters not into the "on/off"
Enviat des del meu GT-N7100

aka_sirok said:
just go to movement in settings and click into the leters not into the "on/off"
Enviat des del meu GT-N7100
Click to expand...
Click to collapse
U means motion to be turned off. Ok I did that now and let see the difference
Sent from my GT-N7100 using Tapatalk 2

zevozki said:
Im about to open thread but I saw yours so I decided to put my own issue.
I just upgraded my sofware from 4.1.1 to 4.1.2 France rom. Factory wipe before and after upgrade and first thing noted battery drain. I would specifically note SCREEN ON is eating my battery. 19 hours max i could get which comparing to old rom was day and half with exact same apps and settings.Who faced the same thing and who managed to resolve it?
Please see my battery screen shots
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Hi bro, I did some research before. 8 out of 10 people suggested do a battery calibration after flashing a new ROM. Well I tried and I think the results are good. I upgraded/flashed my firmwares four times since my first purchase. And I noticed it ate my battery when I flash a new firmware.
I did a battery calibration, it managed to hold more than 24 hours. I'm sorry I can't share my battery stats now because I just did calibration again to monitor my battery again so that I can ensure the accurate and 'real' result.
I'll keep you posted, let's see how the device go. Anyway, I still using a custom Kernel, did under-volt and using the ONE POWER GUARD app...
And 1 question, is your phone using all stock settings, ROM, and KERNEL??
Sent from my GT-N7100 using xda premium
---------- Post added at 04:22 PM ---------- Previous post was at 04:07 PM ----------
Oh yeah I almost forgot to share with you guys.
I found an app called Android Tweaker. It is free from market. But I managed to get a PRO versions which contains full functions.
For details just refer the Google Play's descriptions...
Back to topic, I used this app to do some tweaks on the battery section which are increasing the Wi-Fi scan interval and Increase Deep Sleep Battery Life...
I will see is it able to push my battery saving 'limit' even LOWER. Now I'm still charging my phone. I will wipe my battery stats and monitor again... It takes time, and I hope it will show more significant result of maintaining battery life.
Try this app with CAUTION! It might cause BOOTLOOP or get STUCK at Samsung logo!
DO A NANDROID BACKUP BEFORE USING THIS APP! JUST IN CASE. I HAVE WARNED YOU ALL...
See you guys soon...
Sent from my GT-N7100 using xda premium

takumibunta said:
Hi bro, I did some research before. 8 out of 10 people suggested do a battery calibration after flashing a new ROM. Well I tried and I think the results are good. I upgraded/flashed my firmwares four times since my first purchase. And I noticed it ate my battery when I flash a new firmware.
I did a battery calibration, it managed to hold more than 24 hours. I'm sorry I can't share my battery stats now because I just did calibration again to monitor my battery again so that I can ensure the accurate and 'real' result.
I'll keep you posted, let's see how the device go. Anyway, I still using a custom Kernel, did under-volt and using the ONE POWER GUARD app...
And 1 question, is your phone using all stock settings, ROM, and KERNEL??
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
Lets first all agree in one thing to narrow down the source of the drainage. Is it the SCREEN ON is the eating your battery?
To answer your question im in stock rom and stock kernal with cf root only.
I know there are methods by using custom kernals and undervolting and supported apps.
Honestly I prefer to stable my stock rom and kernal battery usage first to last my battery more than 24 hours. So basically I like to work on stock because the majorty of the phones users are stock.
One thing I can try is battery calibration. Can you tell me the process?
Sent from my GT-N7100 using Tapatalk 2

zevozki said:
Lets first all agree in one thing to narrow down the source of the drainage. Is it the SCREEN ON is the eating your battery?
To answer your question im in stock rom and stock kernal with cf root only.
I know there are methods by using custom kernals and undervolting and supported apps.
Honestly I prefer to stable my stock rom and kernal battery usage first to last my battery more than 24 hours. So basically I like to work on stock because the majorty of the phones users are stock.
One thing I can try is battery calibration. Can you tell me the process?
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Ok.
There is 2 options for your case.
Since you are using stock ROM & KERNEL, with ROOT access,
First option, I suggest you to use the ONE POWER GUARD app... The latest version is stable and there is a battery calibration function in the options.
Second option, download 'battery calibration' in the Google Play. Just for simple battery calibration only...
I STILL RECOMMEND ONE POWER GUARD. IT CAN OPTIMIZE YOUR KERNEL, ROM, WI-FI, 3G AND I/O SCHEDULER SO THAT TO MAINTAIN BATTERY LIFE. IT'S A NICE TRY.
Here is the step (The developer recommend us to follow these steps but not necessary)
THE FIRST AND SECOND STEP IS THE BATTERY CALIBRATION PROCESS
1. CHARGE your phone to 100%
2. Click on battery calibration button first (battery calibration app or ONE POWER GUARD app), then only plug off your charger.
THE THIRD AND FORTH STEP ARE NOT NECESSARY TO PERFORM, I TRIED AND I SUGGEST YOU TO DO THESE AS THEY CAN ASSURE YOUR BATTERY ACHIEVES THE MAXIMUM PERFORMANCE.
3. Drain your battery until it shut off completely, until you cannot switch on your phone...
4. CHARGE your phone again until full, without switching on your phone...
(Some people recommend to charge 4/5 hours to 'heat' the battery chemicals, I just forward their messages, I am not understand why to do that)
SORRY FOR MY BAD ENGLISH AND I HOPE YOU SATISFY MY REPLY...
Sent from my GT-N7100 using xda premium

takumibunta said:
Ok.
There is 2 options for your case.
Since you are using stock ROM & KERNEL, with ROOT access,
First option, I suggest you to use the ONE POWER GUARD app... The latest version is stable and there is a battery calibration function in the options.
Second option, download 'battery calibration' in the Google Play. Just for simple battery calibration only...
I STILL RECOMMEND ONE POWER GUARD. IT CAN OPTIMIZE YOUR KERNEL, ROM, WI-FI, 3G AND I/O SCHEDULER SO THAT TO MAINTAIN BATTERY LIFE. IT'S A NICE TRY.
Here is the step (The developer recommend us to follow these steps but not necessary)
THE FIRST AND SECOND STEP IS THE BATTERY CALIBRATION PROCESS
1. CHARGE your phone to 100%
2. Click on battery calibration button first (battery calibration app or ONE POWER GUARD app), then only plug off your charger.
THE THIRD AND FORTH STEP ARE NOT NECESSARY TO PERFORM, I TRIED AND I SUGGEST YOU TO DO THESE AS THEY CAN ASSURE YOUR BATTERY ACHIEVES THE MAXIMUM PERFORMANCE.
3. Drain your battery until it shut off completely, until you cannot switch on your phone...
4. CHARGE your phone again until full, without switching on your phone...
(Some people recommend to charge 4/5 hours to 'heat' the battery chemicals, I just forward their messages, I am not understand why to do that)
SORRY FOR MY BAD ENGLISH AND I HOPE YOU SATISFY MY REPLY...
Sent from my GT-N7100 using xda premium
Click to expand...
Click to collapse
you did a great work bro. I will try what you adviced. 5stars
Sent from my GT-N7100 using Tapatalk 2

zevozki said:
you did a great work bro. I will try what you adviced. 5stars
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
You are welcome. I understand how it feels when your battery is draining like hell. I will also try new things. Who knows? Maybe will find out something interesting
I am now trying the new app called Android Tweaker. So far, after my device is fully charged, I 'Skype' with my friends about 1 and a half hour, using XDA app about 1 hour, 'whatsapping' and watching music videos. They drained about 21% of battery in 5 hours. Unfortunately I rebooted my device to flash something and my battery stats had reset, it became inaccurate.
Looks like I have to wait until next round fully charge then I can make sure is the Android Tweaker helps me to reduce more battery usage.
But so far, I deep sleep my device about
6 hour. And I made several calls about 30 mins of total time. And I did set an alarm, I was too tired and I didn't hear it. The music was replaying about 30min Haha so embarrassing Now I still have 53% battery and I completed my charge at 2am in the morning.
According to my rough calculation, I have used my note 2 more than 11 hours (Including all the activities I mentioned above, and deep sleep time) ADD: Wi-Fi on all the time, motion on, and auto brightness on.
Looks like quite OK for me. But I still want to take a few days to observe few times so that I can provide a more accurate result to you all.
THANKS FOR YOUR APPRECIATION AND I WILL DO MY BEST. I'LL KEEP YOU POSTED BRO.
Sent from my GT-N7100 using xda premium

Cm11 may have a battery drain issue with wifi and cell standby.

I flashed cm11.
It seems good.
But, my fire phone use 50% of battery with wifi and cell standby.
I tried to wipe and install 5 times over, but battery drains yet.
Do you have a solution with the problem?
Thank you . :crying:

Never had a battery problem with any of the builds. Going 2 - 4 days with full charge, depending on usage. I guess that's because I treat my battery like a ? .

My battery's been very efficient. In fact, right now I'm just letting cm11 handle it without greenify and amplify because I think its doing a pretty good job all by itself. Are you sure you're reading it right? 50% seems like a big number but if you're checking it right after you flash the ROM its not gonna give you really useful info. Try using something like better battery stats to give you a detailed explanation and wait a few days so you can really see what's going on. In the mean time you can look into your apps to see if any of them are waking up excessively and causing drain. Facebook used to be a killer but I can't say if that's improved because I don't have it installed right now.

superswain said:
I flashed cm11.
It seems good.
But, my fire phone use 50% of battery with wifi and cell standby.
I tried to wipe and install 5 times over, but battery drains yet.
Do you have a solution with the problem?
Thank you . :crying:
Click to expand...
Click to collapse
I was going to save this for a few more days when the testing was complete, but I figured I can give you all a sneak peek....
I have 2 Fire phones currently running on the T-mobile network. These are my wife's and my backup phones, so I've had the luxury of doing the following:
Her Phone - FireOS 4.6.1 with Google Play and Google Play Services (and the two other needed files) installed.
My Phone - ggow's CM11 (7/25 Build) with pico GAPPS.
Phones were both charged to 100% and placed side by side with cell network and wifi on, mobile data off. No social media apps installed. Only thing syncing in the background is emails (and my wife and I receive a similar amount). Phones have been left alone with just the occasional screen on to peek at the progress.
4 days and 21 hours into the experiment, the FireOS phone is at 23% battery remaining, while the CM11 phone is at 45%. At this rate, the FireOS phone will probably conk out just short of 7 days, while the CM11 phone should last ~9 days.
ggow has given us a beautiful gift.

Bingo Bronson said:
Never had a battery problem with any of the builds. Going 2 - 4 days with full charge, depending on usage. I guess that's because I treat my battery like a .
Click to expand...
Click to collapse
Thank you
I will wait a faw days.
Have a nice day !

Plonko said:
I was going to save this for a few more days when the testing was complete, but I figured I can give you all a sneak peek....
I have 2 Fire phones currently running on the T-mobile network. These are my wife's and my backup phones, so I've had the luxury of doing the following:
Her Phone - FireOS 4.6.1 with Google Play and Google Play Services (and the two other needed files) installed.
My Phone - ggow's CM11 (7/25 Build) with pico GAPPS.
Phones were both charged to 100% and placed side by side with cell network and wifi on, mobile data off. No social media apps installed. Only thing syncing in the background is emails (and my wife and I receive a similar amount). Phones have been left alone with just the occasional screen on to peek at the progress.
4 days and 21 hours into the experiment, the FireOS phone is at 23% battery remaining, while the CM11 phone is at 45%. At this rate, the FireOS phone will probably conk out just short of 7 days, while the CM11 phone should last ~9 days.
ggow has given us a beautiful gift.
Click to expand...
Click to collapse
Thank you.
I wait and check my battery after a few days.
Have a nice day !:fingers-crossed:

KLit75 said:
My battery's been very efficient. In fact, right now I'm just letting cm11 handle it without greenify and amplify because I think its doing a pretty good job all by itself. Are you sure you're reading it right? 50% seems like a big number but if you're checking it right after you flash the ROM its not gonna give you really useful info. Try using something like better battery stats to give you a detailed explanation and wait a few days so you can really see what's going on. In the mean time you can look into your apps to see if any of them are waking up excessively and causing drain. Facebook used to be a killer but I can't say if that's improved because I don't have it installed right now.
Click to expand...
Click to collapse
Thank you !
I'll wait and check my battery.
I hope my battery be an efficiency.

When you have collected some data with "Better Battery Stats", feel free to post some screenshots.
I used GSam Battery Monitor in the past to get an in depth view.
Example screenshots from Kernel Adiutor & Gsam (Everything's fine, deep sleep state, not too many wakelocks, etc.):
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

I've found the fire to have the best battery of any Android device I've owned and I'm still on fire os with a different launcher. I put this down to the less deep integration of gapps when sideloaded. Most wake locks seem to be Google related for me.

And the final tally....
I forgot to post the final tallys. For those interested...
Phone with FireOS gave up the ghost at 6 days 15 hours
Phone with CM11 lasted almost exactly 2 days longer at 8 days 15 hours
Granted this is with no use, but it is indicative of how much juice the core OS uses just to keep the motor running. Thanks again, ggow.
Plonko said:
I was going to save this for a few more days when the testing was complete, but I figured I can give you all a sneak peek....
I have 2 Fire phones currently running on the T-mobile network. These are my wife's and my backup phones, so I've had the luxury of doing the following:
Her Phone - FireOS 4.6.1 with Google Play and Google Play Services (and the two other needed files) installed.
My Phone - ggow's CM11 (7/25 Build) with pico GAPPS.
Phones were both charged to 100% and placed side by side with cell network and wifi on, mobile data off. No social media apps installed. Only thing syncing in the background is emails (and my wife and I receive a similar amount). Phones have been left alone with just the occasional screen on to peek at the progress.
4 days and 21 hours into the experiment, the FireOS phone is at 23% battery remaining, while the CM11 phone is at 45%. At this rate, the FireOS phone will probably conk out just short of 7 days, while the CM11 phone should last ~9 days.
ggow has given us a beautiful gift.
Click to expand...
Click to collapse

Weird. I am using mine without a sim chip, airplane mode, and getting cell standby battery drainage. Didn't even last overnight with no usage at all from 100%. That'd with airplane mode and wifi enabled, by the way. 57% cell standby. Anything to disable service wise?
Would you mind running an overnight test without a sim in it?

plympton said:
Weird. I am using mine without a sim chip, airplane mode, and getting cell standby battery drainage. Didn't even last overnight with no usage at all from 100%. That'd with airplane mode and wifi enabled, by the way. 57% cell standby. Anything to disable service wise?
Would you mind running an overnight test without a sim in it?
Click to expand...
Click to collapse
You're in luck. I have a 3rd Fire phone I have running on CM11 that I have no SIM in with Airplane mode on and WiFi on. I walked over to check and the phone just happened to be at 1% remaining....checked battery time. 10 days 20 hours. (battery stats report 100% phone idle battery usage).

Plonko said:
You're in luck. I have a 3rd Fire phone I have running on CM11 that I have no SIM in with Airplane mode on and WiFi on. I walked over to check and the phone just happened to be at 1% remaining....checked battery time. 10 days 20 hours. (battery stats report 100% phone idle battery usage).
Click to expand...
Click to collapse
Aargh! So what am I doing wrong? Is it an app, perhaps, causing the phone to get activated? I'll make a new rom slot and flash it again without adding my Google account and see how that goes. Is there a way to see what apps are causing things to get activated?
Do you have just cm11 loaded, or cm11 and the minimal google apps stuff?
Thanks!
(Though honestly this is just for nerd fun - having Google apps and fireos with the now launcher pretty much meets my needs, but I gotta know! )

plympton said:
Aargh! So what am I doing wrong? Is it an app, perhaps, causing the phone to get activated?
Do you have just cm11 loaded, or cm11 and the minimal google apps stuff?
Click to expand...
Click to collapse
- You can use Betterbatterystats to see what is causing wakelocks. http://forum.xda-developers.com/showthread.php?t=1179809
- Minimal Google Apps installed

So I created a new SafeStrap location, and loaded JUST CM11 8/10 build, and with Wifi On (or in Airplane Mode), I get about 7.5%/hr battery drain according to Betterbatterystats.
Says No Data Connection 75% and No or unknown signal 75% of the time. I'm not really educated on reading the BBS results, so anyone know of a pointer? Like 7% of the time it is at 2.15 GHz, and 91% deep sleep - that normal when it's idling?
Strange - doesn't do this in FireOS. Is this partially BECAUSE Google Apps aren't loaded just yet? My other slot has the Google Apps, and it happens as well.
Thanks!

plympton said:
I'll make a new rom slot and flash it again ... So I created a new SafeStrap location ... My other slot ... and it happens as well.
Click to expand...
Click to collapse
Yo Plimpy, ignore my PM. Please use the stock ROM slot, because, well...
ggow said:
Installation in the Stock Slot is Mandatory
Click to expand...
Click to collapse

Bingo Bronson said:
Yo Plimpy, ignore my PM. Please use the stock ROM slot, because, well...
Click to expand...
Click to collapse
They ain't paying attention. WHY???

Yep missed that requirement. Trying. In a non flashable state after wiping stock. Will try again tonight. Not sure why the slot would affect battery usage but I'll give it a go.

well, bang me upside the head. Hope my pain is the world's gain, but yeah, looks like if you actually follow the instructions, you don't get the battery drain. Had to wipe the stock install, then left with nothing on the device, couldn't boot, couldn't mount over USB to transfer the file, device manager was grumpy about the phone, but after sorting that out, figuring out how to adb sideload, all is working again. Whew!

Just confirming - after I deleted the weather channel app (taking 30% of the battery), I experienced about 1-2% battery drain overnight. REALLY remarkable, actually. This is without email syncing, wifi disabled on sleep, etc. Nice. Really makes the fire phone a good usable device. Or at least and ipod replacement for the kids.