Develop Bugs

Is battery calibration necessary?

How important is battery calibration using the apps in the market? This whole past week has been a flashing frenzy I'm sure for many of you, without a real break to calibrate battery before you flashed the next newest release.
I've lasted the same rough battery life without wiping batt stats, using a battery calibration app or cycling to 0% and all seems fine, so I'm wondering what the importance of it is.
Sent from my SGH-T989 using Tapatalk

Just use the phone and charge the battery as needed. These batteries don't need calibrated. I have 3 and charge them all differently and they all get the same type of life.

But when you flash a rom be sure to give it time like 2-3 days before you judge battery life sometimes old battery stat files stick after flashing so make sure you calibrate these batteries as least once a month.

I use Battery Calibration everytime I flash a new rom... Isn't that what we are suppose to do?

Yes u should calibrate.. for example using stock roms for weeks I never calibrated.. got 16 hours. Flashed juggernot and beast mod got the same battery life because I didn't calibrate.. after running beast for 2 days I did my first calibration and a day later I was pushing 30 hours on one charge.
After u flash a new rom or kernel you should calibrate
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mbernusg said:
Yes u should calibrate.. for example using stock roms for weeks I never calibrated.. got 16 hours. Flashed juggernot and beast mod got the same battery life because I didn't calibrate.. after running beast for 2 days I did my first calibration and a day later I was pushing 30 hours on one charge.
After u flash a new rom or kernel you should calibrate
sent from my real Gs move in silence like lasagna
Click to expand...
Click to collapse
Wtf? So what's happening? Is my phone ACTUALLY going to zero or its assuming i've hit zero after (X) hours? Once I calibrate, the phone should know that I haven't burned as much as it thought?
And this is after EVERY rom flash? Gets tedious?
Sent from my SGH-T989 using Tapatalk

Okay, no wonder why. Thanks for letting me know!

You're just calibrating efficient usage of power..
If you're battery is used to giving crappy life even on a great battery rom it'll drain quickly
sent from my real Gs move in silence like lasagna

How do you calibrate if I may ask? Step by step please
Thanks!
And you're gonna do this now on with every new release?
Sent from my SGH-T989 using Tapatalk

just charge the battery to 100% then go into CWR and select the option to wipe battery history

AllGamer said:
just charge the battery to 100% then go into CWR and select the option to wipe battery history
Click to expand...
Click to collapse
And the Battery Calibration app?
Thank you.
Sent from my SGH-T989 using Tapatalk

that's the point you don't need one

AllGamer said:
that's the point you don't need one
Click to expand...
Click to collapse
Gotcha thanks.
Charge 100% > CWR > delete batt stats > reboot > discharge.
Sent from my SGH-T989 using Tapatalk

sorry.. newbie here.. be easy.. what is CWR?

kun817 said:
sorry.. newbie here.. be easy.. what is CWR?
Click to expand...
Click to collapse
Clockwork mod recovery. for rooted devices, power phone off, hold volume up and down then with power button and release when you see the Samsung logo.
You must have installed clockwork recovery to have this work, find instructions in the Android development sections.
Sent from my SGH-T989 using Tapatalk

sgs tools does that work on this phone anyone know? Easy app to wipe battery stats
Sent from my SGH-T989 using xda premium

Screw calibrating and screw wiping battery stats. Use your phone as you normally do and battery life will maximize on its own with a couple charge cycles anyways. If you have battery life issues its much more likely to be an application, rom or kernel issue.... when all else fails then look to calibration or wiping of battery stats.
If you don't agree then feel free to waste your time calibrating every time you flash a new rom.
Sent from my SGH-T989 using xda premium

The_Biz said:
Just use the phone and charge the battery as needed. These batteries don't need calibrated. I have 3 and charge them all differently and they all get the same type of life.
Click to expand...
Click to collapse
can you tell me where you bought your batteries from? I've been looking on the web (ebay) but there's so many varieties and the prices differ widely from $10 for 3 to $40 for one. i don't want to spend too much money on extra batteries but i also don't want to get a cheap one that will mess up my phone either.

kun817 said:
can you tell me where you bought your batteries from? I've been looking on the web (ebay) but there's so many varieties and the prices differ widely from $10 for 3 to $40 for one. i don't want to spend too much money on extra batteries but i also don't want to get a cheap one that will mess up my phone either.
Click to expand...
Click to collapse
I bought the extra charging dock with the battery from Tmobile.
Edit: I wont say how I got the 3rd.

AllGamer said:
that's the point you don't need one
Click to expand...
Click to collapse
So... what does this program actually do then?
https://market.android.com/details?id=com.nema.batterycalibration
Does it basically do what we do in CWM?

Bad battery?

I have had some issues where my phone won't wake up so I have to pull the battery and when it reboots the battery drops like 20%. Is this a bad battery or what causes this?
Sent from my SPH-D710 using XDA Premium App

what rom are you running? if i remember correctly there was an issue with one of the roms but i cant remember. but I do remember it being an older rom that did that.
as for the batt. % i get that all the time even when i reboot..tho i get a bigger drop in % when the batter is lower.. like if i was at 50% batt power.. reboot then i would be like at 20% batt. power.. but it would stay at 20% for a really long time till it caught up with it. and sometimes the batter % would rise up a bit. but eventually start to go down again.
But maybe I have a bad battery also.. so im not sure...lol

Jeepguyxj said:
what rom are you running? if i remember correctly there was an issue with one of the roms but i cant remember. but I do remember it being an older rom that did that.
as for the batt. % i get that all the time even when i reboot..tho i get a bigger drop in % when the batter is lower.. like if i was at 50% batt power.. reboot then i would be like at 20% batt. power.. but it would stay at 20% for a really long time till it caught up with it. and sometimes the batter % would rise up a bit. but eventually start to go down again.
But maybe I have a bad battery also.. so im not sure...lol
Click to expand...
Click to collapse
I had the exact same problem my phone would constantly reboot and shut itself off then I would lose half my battery % I thought it was the battery too so I returned it to stock and took it to sprint they looked at the phone for 2 hours and said there was absolutely nothing wrong with it or the battery. So I took it home and re rooted using Qbking77's latest method the one that does not give you the yellow triangle and I have not had one reboot or sleep of death since and the phone just runs soo much better now so I think it was a bad root for me. I would try re rooting with the latest method and see what that does for you. Also ya out of curiosity what rom are you using because I have heard similar stories from people running the ICS leaks.

studdmufin said:
I have had some issues where my phone won't wake up so I have to pull the battery and when it reboots the battery drops like 20%. Is this a bad battery or what causes this?
Sent from my SPH-D710 using XDA Premium App
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In recovery, wipe your battery stats. May help after the phone calibrates.

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rbtrucking said:
I had the exact same problem my phone would constantly reboot and shut itself off then I would lose half my battery % I thought it was the battery too so I returned it to stock and took it to sprint they looked at the phone for 2 hours and said there was absolutely nothing wrong with it or the battery. So I took it home and re rooted using Qbking77's latest method the one that does not give you the yellow triangle and I have not had one reboot or sleep of death since and the phone just runs soo much better now so I think it was a bad root for me. I would try re rooting with the latest method and see what that does for you. Also ya out of curiosity what rom are you using because I have heard similar stories from people running the ICS leaks.
Click to expand...
Click to collapse
I'm running caulk's fc07 1.1 with the repacked kernal. It happened to me before on GB while also running caulk's rom but it only a few times. It seems to happen more now. Here is a screen of my battery
Sent from my SPH-D710 using XDA Premium App

I believe this would happen more in most recent ROMs because everyone is focusing how fast we can run it or how long we can use it. In either case, there are lots of tweaks and mechanism to make it fast and last long.
For the battery life, there is some background process monitoring unnecessary processes and kills those or tweaks to less frequently monitor the status. So, if the process which is related to battery life is killed, next time when it wake up, it may detect the different life time based on current Voltage or mA. I'm not an expert in this area but it's highly possible scenario. Tweaking the system brings lots of good things to us but in the other side, there could be some
side effect.
If you want to verify this theory, you can just compare the non tweaked rom versus tweaked Rom.
Be sure that you don't run any battery saver apps on non tweaked rom to measure it correctly.
Attached is my last screenshot yesterday after I removed the battery saver app. Currently I'm using Calk's Stock Rom FC07 (non tweaked version). Based on my test, the battery last longer than when battery save app installed and running.

Cool I didn't know that would be an issue. Well I'll try that thanks for help
Sent from my SPH-D710 using XDA Premium App

Also a note... with my experience anything to do with 3g service... I can kiss my batter life goodbye... if im at 100% battery life.. and i have 3g on... it will last around 5 hours and its dead

[Q] Rom with the BEST battery life

hy guys i want to know which is the rom+kernel that gives the best battery life
POST YOUR SCREENSHOT

Any CM9 ROM, with underclocked & undervolted CPU, screenshot is following ^^
My battery lasts 36 hours (3G talk time)
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Notice, I was charging, but still quite some battery ^^

familyguy59 said:
Any CM9 ROM, with underclocked & undervolted CPU, screenshot is following ^^
My battery lasts 36 hours (3G talk time)
View attachment 1098863
Notice, I was charging, but still quite some battery ^^
Click to expand...
Click to collapse
You charged your phone almost to full.
There is no best rom. Every device is different.
Sent from my Galaxy Nexus using xda premium

you really have to experiment.
I've had a lot of luck with the Trinity Kernel on either AOKP or RAScream.

slimics with franco kernel
Sent from my Galaxy Nexus using xda premium

Slim rom
I'm running default kernel and LOVING THIS ROM.

i'm able to get a combined 12 hours standby time with 4+ hours screen on time on either AOKP or Liquid. Kernels don't seem to change much there.

Jarm3r said:
Slim rom
I'm running default kernel and LOVING THIS ROM.
Click to expand...
Click to collapse
mmm i'm running black ice 37 as you can see in the signature but slim rom is interesting....but when i saw super wipe i say cause the last time i used it my phone hasn't a system and i had only the recovery!

joshnichols189 said:
You charged your phone almost to full.
There is no best rom. Every device is different.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Sorry, but no. I had only just started to charge, lolz... The phone was literally charging for less than 30 seconds, then I posted the screenshot ^^

masterchif92 said:
hy guys i want to know which is the rom+kernel that gives the best battery life
POST YOUR SCREENSHOT
Click to expand...
Click to collapse
Why don't you make a list of each rom you want to try, then take the time to flash each one and run each for about a week. Since battery life and performance is directly related to each users set up and personal style of use. This way in about 4 or 5 weeks you can actually make a determination on your own as to what is best for you.
Sent from a phone...

familyguy59 said:
Sorry, but no. I had only just started to charge, lolz... The phone was literally charging for less than 30 seconds, then I posted the screenshot ^^
Click to expand...
Click to collapse
In the middle of the graph, it goes from red all the way up to ~85%. The green bar below the graph also shows how long it's been charging which is DEFINITELY not 30 seconds.

best battery life is very subjective to the user. and remember that the display on this phone is power hungry to say the least. i hope that very soon all phones will come out with non removable batteries. people that need extra power can carry a portable power pack instead of an extra battery. and for those who complain about the longevity of the battery have obviously never used a phone with built in battery or done their research and are simply relying on that crutch of being able to swap the battery just because they can.
WOW...anyway....my point when i started this was that no one can tell you what works best for you...you have to figure that out on your own.

Faideelah said:
In the middle of the graph, it goes from red all the way up to ~85%. The green bar below the graph also shows how long it's been charging which is DEFINITELY not 30 seconds.
Click to expand...
Click to collapse
You'll be surprised, I had only just plugged it in, just then. But never mind, we're not here to argue, are we?

familyguy59 said:
You'll be surprised, I had only just plugged it in, just then. But never mind, we're not here to argue, are we?
Click to expand...
Click to collapse
So your phone magically regained battery life?
You can clearly see the green charging bar in the middle, not to mention the fact that battery graphs don't go up by themselves.

I was using BlackICE 37 w/ the newest Air Kernel for a while and was experiencing some really good battery life!
I then tried Slim ROM with the same kernel and the battery life was ok...I'm now using the Samurai Kernel and I'm liking it!
Sorry no screenshots, but I have had 17hrs at 50% (about 7hrs were standby cuz I was asleep and didn't plug my phone in to charge over night!)

I'm on AOKP and Franco kernel its pretty good for me, I'm not getting 36 hours a charge but its better than put of the box.
Sent from my Galaxy Nexus using xda premium

fk.gregor said:
I'm on AOKP and Franco kernel its pretty good for me, I'm not getting 36 hours a charge but its better than put of the box.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
That's okay, neither is the person that claimed they were.

edfunkycold said:
Why don't you make a list of each rom you want to try, then take the time to flash each one and run each for about a week. Since battery life and performance is directly related to each users set up and personal style of use. This way in about 4 or 5 weeks you can actually make a determination on your own as to what is best for you.
Sent from a phone...
Click to expand...
Click to collapse
The purpose of this thread is not just to help me in finding a rom that will give me some battery life but is also an opportunity to compare various types of rom + kernel in circulation as there are significant combinations of these do not take it as a joke but I think the comparison is the best solution to see what can be achieved with this device best regards

masterchif92 said:
The purpose of this thread is not just to help me in finding a rom that will give me some battery life but is also an opportunity to compare various types of rom + kernel in circulation as there are significant combinations of these do not take it as a joke but I think the comparison is the best solution to see what can be achieved with this device best regards
Click to expand...
Click to collapse
No I'm sorry if you took my comment as being strong, I was just trying to give you and whomever else some advice. Yes people can share what they like and what combinations they are using but again each users setup and each users personal style of utilizing their phone will be the final determining factor as to what is best for them. Did not take this thread as a joke at all.
Sent from a phone...

edfunkycold said:
No I'm sorry if you took my comment as being strong, I was just trying to give you and whomever else some advice. Yes people can share what they like and what combinations they are using but again each users setup and each users personal style of utilizing their phone will be the final determining factor as to what is best for them. Did not take this thread as a joke at all.
Sent from a phone...
Click to expand...
Click to collapse
is in fact what I would do with this thread is to gather a bit 'of screen and then publish them on the start page so as to assist new users in selecting the ROM according to their needs, then of course every result will be based on usage of 'but if you can get many statistics can make an average of everyone!

Battery life after Jelly Bean Update

how was your battery life after update . my was suck drain very fast

I don't know how most people got better battery life, but mine worse, not extreme, but noticeable worse.
Android system and Android OS takes second and third place, which on ICS I barely see their place on top of battery usage.

cnguyen said:
how was your battery life after update . my was suck drain very fast
Click to expand...
Click to collapse
my own battery life is mess.

my phone drop about 10% in 15min

Mine is great. But I turn off data when not used. Last night, I lost 1% per hour with data off and sync off
Sent from my Rooted Gameboy

batttery getting better after couple reboot

Best advice, power down after every charge and reboot.
Sent from my SGH-T999 using xda premium

cnguyen said:
batttery getting better after couple reboot
Click to expand...
Click to collapse
Seems the same for me...at first after updating battery life was terrible..but after a few charges and reboots it seems to be getting better.

Download an app from the play store called "CPU Stats" and see if the CPU is under serious load when you're not doing anything. If it is, you may have the same issue I had which was that the media scanner was getting stuck in folders that had a lot of files in them. My idle cpu utilization now hovers between 8-30% on core 1 and core 2 stays sleep for the most part.

Jigga0o7 said:
Download an app from the play store called "CPU Stats" and see if the CPU is under serious load when you're not doing anything. If it is, you may have the same issue I had which was that the media scanner was getting stuck in folders that had a lot of files in them. My idle cpu utilization now hovers between 8-30% on core 1 and core 2 stays sleep for the most part.
Click to expand...
Click to collapse
How did you fix your issue?

dls5375 said:
How did you fix your issue?
Click to expand...
Click to collapse
If you're rooted, look in system/bin on the root directory and see if you have a file named gsiff.daemon (also do the same for qosmgr) If so, add .bak to the end of it.
this will kill the high android usage!
where i got the information from
http://forum.xda-developers.com/show...php?p=34189109
Betterbatterystats will tell you if you have the daemon issue or the gosmgr for my phone the gosmgr was killing my battery

dls5375 said:
How did you fix your issue?
Click to expand...
Click to collapse
I offloaded my Titanium Backup folder to my PC & deleted it from my phone plus made sure to get rid of any corrupted pictures (aimed at the 0 bytes ones). So not only is my battery life better, but the performance is also much better because the CPU(s) aren't really doing anything until I actually use the phone. Note that this is an issue I've only had w/ Touchwiz Jellybean and never had it with CM10 or any AOSP based rom. This is a bug that Samsung/Google really needs to get on top of because I'm sure that a lot of people are having this problem and don't know how to fix it.

dls5375 said:
Seems the same for me...at first after updating battery life was terrible..but after a few charges and reboots it seems to be getting better.
Click to expand...
Click to collapse
This is my understanding as well.

Charged to 100 turned off WiFi sync and mobile data before bed woke up with 2% loss then listening to music on my way to work.
Update : still going
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My battery life has been amazing
This was after the weekend. Friday Morning I charged it and then I was off I went to work. After I went to a party didn't charge my phone. Woke up in some girls room. Still surprised I had more than 50%. I didn't go home that day and everyone had an iphone so I couldn't charge my baby. Wake up go home and I had this much and I was like wow holy sh**.
Stats: I had a little over an hour of talk time and a little under 2 hours of screen time.
Yeah I know why is battery life good if you don't use the phone but dude seriously I had a GS2 and drainage on standby was so bad. I like that they improved standby battery drainage this was beautiful. I have the latest Stock Jelly Bean. Rooted, debloated myself with stock Kernel. Might add a new Kernel but don't really need to this is just great.

Jigga0o7 said:
Download an app from the play store called "CPU Stats" and see if the CPU is under serious load when you're not doing anything. If it is, you may have the same issue I had which was that the media scanner was getting stuck in folders that had a lot of files in them. My idle cpu utilization now hovers between 8-30% on core 1 and core 2 stays sleep for the most part.
Click to expand...
Click to collapse
dls5375 said:
How did you fix your issue?
Click to expand...
Click to collapse
I was having this exact issue and fixed mine by copying my external SD card contents onto my desktop and then reformatting my sd card. After that I just transfered my old pictures and videos back to my card.
For people who are having poor battery life, the best thing you can do to help others help you is post a screen shot or at least write down what is using your battery and how long you have screen on time. When I was having my media issue it was obvious when looking at the battery usage since my cpu was constantly awake. Just saying "i have poor battery life" really doesn't explain much at all.

That would explain things... I had my media scanner get stuck and take down my battery a couple of days ago... after a reboot though it was much better... Though I should have let this run longer on battery just to see how long it would run.

Ok so since the JB update it seems my battery has been draining a bit faster. I've tried turning off sync and all the other normal stuff but it doesn't seem to help. Here are my stats and the slight lapse on the time line was when I was in CWM doing a nandroid backup.

I don't think that you can compare yours since you did a backup, that always drains the battery more than normal use would.

Well all I can say is its normally like that. I pull my phone off the charger at 7 am and by 4pm its usually at 10% with maybe an hour of on screen time. I'm just trying to figure out why it dies so much quicker than what most people are posting here. I try to keep everything closed and off and I've frozen all the bloatware.
Sent from my SGH-T999 using xda app-developers app

I guess battery life on Kit Kat does suck

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Seems about normal for me, typical business day.

look at your "awakes" as apposed to screen on. theres a lot of avticity happening. use greenify if youre rooted. and perhaps consider buy the donation package so you can greenify system apps. it helps a ton.

Uninstall Google play services update. It killed my battery yesterday fast.
TWEAKED N3

BACARDILIMON said:
Uninstall Google play services update. It killed my battery yesterday fast.
TWEAKED N3
Click to expand...
Click to collapse
What side effects this caused on gapps? Maps, Gmail, Magazine, etc.

lanwarrior said:
What side effects this caused on gapps? Maps, Gmail, Magazine, etc.
Click to expand...
Click to collapse
For me none cause I use dark themed apps. So I don't update till the Dev does. But play services is causing major battery drain. Overnight my phone used 2.2%. When play services get stuck ur at about a 28 - 46% loss overnight
TWEAKED N3

This is on 4.3 darthstalker rom 6.0 compulsion kernel 9.0, barely any wakes compared to 4.4.2
Don't see any need to downgrade to kitkrap.
Sent from my SM-N900T using xda premium

Canadian version 4.4.2
I flashed a 4.4.2 rom from Canada (bell) also I installed Telus and Rogers, but on the 3 roms battery sucks. Before flash a Canadian rom, I flashed this leaked firmware from Mexico (telcel) and the battery life was amazing, but the problem is telcel have too much bloatware and it's pretty ugly, So in changed rom to a Canadian that doesn't have bloatware or any things like that, but Idk why battery sucks on this rom!

FYI @ OP, your TW Kitkat isn't like a real Kitkat rom. It's got hundreds of Samsung crapware services running down your battery & eating up space. The title isn't really accurate, it's not Kitkat that sucks it's TW Kitkat.
Also see the thread about awesome battery life in the TMO Samsung S4 forum for real gains in batt life regardless of which rom. GApps (specifically gtalkservice & checkin) suck down the battery unless you tame them.

KitKat on T-Mobile same problem on two new NOte 3's, battery killer and crappy wifi stability. Now on 3rd Note 3 with jelly bean and no issues.

Battery Drain!
This is too much battery usage in just 30 minutes and i only used the phone to answer some whatsapp messages!! Any one Knows how to stop ANDROID SYSTEM keep draining our batterys life???
I tryed to unistall google play services updates, but i cant use YT, so i installed it again, and the battery goes a little better, last night it consumes 22% of battery as i was sleeping!

Genezy said:
This is too much battery usage in just 30 minutes and i only used the phone to answer some whatsapp messages!! Any one Knows how to stop ANDROID SYSTEM keep draining our batterys life???
I tryed to unistall google play services updates, but i cant use YT, so i installed it again, and the battery goes a little better
Click to expand...
Click to collapse
When you take the phone off a charger it may not really be at 100%, despite what says the phone says it is at. It is quite common for the phone to be below 100% and fairly quickly change its status to what the real battery level is.
After 11 hours... Android System is at 24%
last night it consumes 22% of battery as i was sleeping!
Click to expand...
Click to collapse
always surprised at people who don't charge when sleeping.. When I am sleeping my phone is always charging.

Example of the phone correction of the battery after removing from the charger. Phone says at first it is at 100%, but that is not real...
I was not using the phone at all during that time.

I get great battery life. I also use Jedi ROM too.
Sent from my Nexus 7 using Tapatalk

I get great life on stock rooted kk.
Sent from my SM-N900T using xda app-developers app

krelvinaz said:
When you take the phone off a charger it may not really be at 100%, despite what says the phone says it is at. It is quite common for the phone to be below 100% and fairly quickly change its status to what the real battery level is.
After 11 hours... Android System is at 24%
always surprised at people who don't charge when sleeping.. When I am sleeping my phone is always charging.
Click to expand...
Click to collapse
I always do but it is also great to know when ur sleeping so if your phone. If phone dies 22% then during the day you gonna loose a lot of battery life cause of a rouge app.
TWEAKED N3

Man, I definitely need to get my Note 3 fixed with another rom.
I used to be happy with the battery performance but now I'm just upset and angry with this ****.
My phone doesn't even last a day for me.