Database Users

[Q] Newly rooted NC having battery issues...

Got a NC for xmas and rooted it and installed cm7.1 and everything seems to be working well except the battery. I went under battery use and i see that Display is eating about 60% of my battery! I turned brightness down to 25%-ish and i have also turned off everything i am not using but the problem still persists. I have seen people saying i need to do some kind of battery calibration but i do not know how to do this. If someone can help me get this issue resolved it would be greatly appreciated.

Unfortunately, you can only do so much about screen battery consumption. Turn brightness down as far as is comfortable, but personally, I don't want to give up the vibrant display. I find 25% is usually adequate indoors. With my screen ON, it consumes roughly 10% per hour of use, which equates to 8-10 hours of use -- not bad. With the screen OFF, it sips less than 1% per hour, and often less than that over a few hours.
Keep in mind, you WANT screen battery consumption to be the largest value. That means it's nice and idle when you're not using it. If something else is using a significant amount of battery, that may be something you can do something about.
As to calibration, I do find that Android battery gauges often are incorrect until you let the battery completely discharge from a full charge once. Then it's calibrated correctly. Of course, that's not recommended for battery health, so don't do it compulsively. I had a device that showed 1% battery remaining for 3 hours while I played MP3 audio.

I wish i was getting 10% an hour, im getting roughly 20% I now have another issue that i did not have this morning, i can not connect to my computer via USB. Is there a setting i might have turned off in my fit to increase battery life?

@Lsjreadingpa Renaming /system/app/phone.apk to phone.bak is a commonly undertaken act that can significantly lower battery usage. Also, you can turn off Account Sync when not using it actively, as it increases battery drain when you are not actively using the NC.
As far as the USB is concerned, make sure you have USB debugging checked in the settings menu.

disynthetic said:
@Lsjreadingpa Renaming /system/app/phone.apk to phone.bak is a commonly undertaken act that can significantly lower battery usage. Also, you can turn off Account Sync when not using it actively, as it increases battery drain when you are not actively using the NC.
As far as the USB is concerned, make sure you have USB debugging checked in the settings menu.
Click to expand...
Click to collapse
How do i rename it? Also a bit of an update, i have turned off syncing as well as alot of the other options and i am losing 5%/20min

Last night I cleared cache and battery stats and let the battery die and then charged it to full this morning. Like I said above I turned off syncing and gps as well as removing beautiful Widgets. I just don't know what else to do. I'm attatching two screenshots showing my battery use in the last hour.
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You can use Spare Parts to check what's consuming battery if your DOMAIN supports it.

Anyone able to help?

Are you concerned about battery consumption while you're using it? If so, then your brightness and the applications you're running are going to determine your battery life.
If it's battery consumption while idle (screen off) that you're concerned about, then do you have any widgets that do network access? I found that my battery life dramatically improved when I was no longer using the Twitter widget.
In Spare Parts you can go to Battery History, then check 'Partial Wake Usage'... this can help you figure out if there's an application that's preventing the device from going to sleep.

I would recommend trying a newer nightly or the Mirage/Kang build found in the Android Dev sub-forum here. I forget when they were added, but there were a few big improvements to CM7 a while ago to help with battery life.

Battery consumption while using it is kinda of scary because it drops like a brick. While sleeping, which i don't think it was doing, seemed to get better after i removed beautiful widgets. How different is the Kang build?

The Kang build has an updated kernel and other updates since the last CM7 nightly. It's supposed to fix an SOD issue. I've been running it for a while and am very happy with the battery life.
Like others have said, battery life while using it would most likely be helped by adjusting the display brightness, kernel settings and/or stopping "rogue" apps. You can see the kernel settings by going into the Settings Menu, then Cyanogenmod Settings then Performance. I use the InteractiveX governor (I believe "Performance" is the one that keeps the CPU ramped up constantly) with the highest overclock.

[Test] Battery Draining

Ok, I've been thinking about this for a while now so I'm going to make a test to decide if I really need a battery saver. I'm making this test for myself purely but I thought someone might wanted to see the results as well so here we go.
The gear:
Samsung Galaxy S2, non-rooted
2000 mah Samsung battery
The competitors
Phone on its own
JuiceDefender Ultimate
GreenPower Free
The settings
Prefer Wifi over data
Connect every 30 min to sync
No night settings (to be fair against the others)
Screen brightness: Auto
I know the battery savers are made to save battery when not using your phone so the screen will be locked the phone only used for a small amount of time between chargings.
The phone is unplugged at 100% and I will continue down to 30% before charging again. I will only be testing each one once, as of now at least.
We'll see how it goes over the next days so feel free to ask questions and such.

Many people I know with an S2 use battery saving apps but i really see no point in them, when we used to compare our stock phones running the same stock ROM there was minimal battery difference. Haptic feedback will be off or on? That makes a big difference.
You should put in a custom ROM to see how much better it is compared to stock.
i look forward to seeing the results of this test though

If I got it correctly haptic feedback is phone vibration on touch, right? That's off at least, never liked it. I'd like to put a custom ROM but I don't want to root the phone, yet.. Maybe in a few months or a year...
I will be updating this as we go along. At the moment we are at 96% with 3 hours of sleep time and only a few minutes of screen time.

Ermm, can I ask does task killer drain your battery? Sorry if I ask the wrong question.

darkmage17 said:
Ermm, can I ask does task killer drain your battery? Sorry if I ask the wrong question.
Click to expand...
Click to collapse
task killer will drain battery if the programs you closed restarts, use advance task killer and ignore those that do,you may need it for those apps that didnt close properly
im interested in your trial, juice defender service was failing to run on my s2, it ended up eating my battery restarting the service.
im looking to save power as i lose 15% over night with flight mode while i hear people lose 1,2%

Yes Android is a bit different than computer OS. To start an app drains more battery than just pushing the "back"-button and let it be in stand by so don't use task killers.
Yea I have had trouble some times with the battery saver draining quite a lot over the night but usually it has been because I had a mail as a widget with push-notification so the battery saver wouldn't disable internet but almost push all my other accounts as well. That was my solution at least. We'll see how this goes.
4h in 93% battery
15 min scrren time

A little update. You see where we are.
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And does anyone know what can have caused this? This is a picture from a few days ago. It has happened maybe 10 times over the last 2 months. Simply the phone gets hot and the only way to unlock the screen is to remove the battery, refit it and then start it. And then it shows this massive drain.

Okay we got 1 day 13 hours down to 30% with 30 min of screen time. Next up is the Juice Defender Ultimate with night settings off.

An update for you all. As you can see JuiceDefender has already passed the "vanilla" time.

I had an odd problem. Sometime during night, the battery suddelny decided to drain at much faster rate and it took it only 6 hours or so to drain from 75% to 15%. I checked with BetterBatteryStats but there seems to be no app that has kept it awake. Anyway, I can't continue with this test spimply because I don't have time for reruns.
What I can say in previous experience:
Vanilla
Great that as soon as a message comes in you get notified immediately.
Unfortunately that's because wifi or data is kept on all the time, draining battery.
JuiceDefender
Usually gives my phone 3-4 days of battery.
It does take some time (up to 15 sec or so) when you unlock the screen to connect and that can be annoying if you are in a hurry.
When I have night settings on to set phone in no vibration, no sound but also have different night setting time for weekends the phone vibrates once at midnight between weekdays and what JuiceDefender recognizes as weekend.
Sometimes it doesn't feel like the apps are updating even though settings are set to allow "dumb apps" to update as well as plenty of time to do so.
GreenPower
I have only had time to use it for a few days and it is only the free version. I will probably buy the premium soon.
It has a better UI than JuiceDefender though not so many settings. I'm not really sure if I need those other settings.
Best thing, it connects instantly to data when I unlock the phone so I can get on to the web or viber or such to see messages directly.
If anyone wants to continue this thread you may do so but I won't make more test as for the moment. Bottom line is that the data turning off when phone's locked really do help with battery life.

wake time longer than screen on time

I'm trying to figure out why according to BetterBatteryStats my awake time is much longer than my screen on time.
I'm not sure what causes it, there are no visible wakelocks. Are you guys able to spot it out based on the screenshots below?
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edit: attaching battery window and cpuspy screen shots
Here's the current battery situation..
light to moderate use. some GPS, youtube videos, and camera (including photosphere) for a bit.
screen time of 1 hour 30 minutes at 55%
I find that my battery doesnt drain at all when the phone is sleeping, however when the phone is being used it drains faster than it should.
cpu spy shows nothing out of the ordinary.. my phone is able to deep sleep (and that's what it's been doing for most of the time)

It could be that you rebooted, and if you did the battery stats are continued from that session.

Ace42 said:
It could be that you rebooted, and if you did the battery stats are continued from that session.
Click to expand...
Click to collapse
Awake time and screen on time are two different things. The phone can be awake without the screen being on.

post your Android Battery window the one under Battery in the settings menu.

Prod1702 said:
post your Android Battery window the one under Battery in the settings menu.
Click to expand...
Click to collapse
Here it is (also added to the main post)
light to moderate use. some GPS, youtube videos, and camera (including photosphere) for a bit.
screen time of 1 hour 30 minutes at 55%
I find that my battery doesnt drain at all when the phone is sleeping, however when the phone is being used it drains faster than it should.
cpu spy shows nothing out of the ordinary.. my phone is able to deep sleep (and that's what it's been doing for most of the time)

17 hours on battery with 55% remaining is pretty damn good battery life if you ask me

kzoodroid said:
17 hours on battery with 55% remaining is pretty damn good battery life if you ask me
Click to expand...
Click to collapse
It's not bad I'll admit that. But I feel like it can do better. My main question is the meaning behind the awake time vs screen on time. My phone was awake for about an extra hour longer than the screen, wondering if it's 'normal' behavior.

I would say it had to do with the GPS/MAPS. The info on CPU Spy doesn't add up to the time the phone has been unplugged. There is only abut 40mins of use on cpu spy. your best bet would be to do a power cycle and see how it goes.

Prod1702 said:
I would say it had to do with the GPS/MAPS. The info on CPU Spy doesn't add up to the time the phone has been unplugged. There is only abut 40mins of use on cpu spy. your best bet would be to do a power cycle and see how it goes.
Click to expand...
Click to collapse
you mean turn the phone off and on? tried that several times.. also tried running the battery down to zero. my wake time is always higher than screen time. I am on Wind mobile (Canada) and the reception is horrible, I get 1-2 bars most of the time in my house.. is that the reason?

beegbear said:
It's not bad I'll admit that. But I feel like it can do better. My main question is the meaning behind the awake time vs screen on time. My phone was awake for about an extra hour longer than the screen, wondering if it's 'normal' behavior.
Click to expand...
Click to collapse
Could be a lot of things waking the phone. I have my 1weather set to update every 15 minutes as well as Facebook notifications checking every 30 minutes, these can all wake the phone from sleep (and not turn on the screen). As well as any email app you have that pushes email to the phone and location services that update on a regular basis. A lot of these apps you can change the frequency of updates from their settings. 1Weather can be set to update itself from like every 15 minutes to once a day or longer. GMail I don't think you have an option, it checks for email every 15 minutes or so and pushes them to the phone and not sure if you can turn off notifications for it or not.

kzoodroid said:
Awake time and screen on time are two different things. The phone can be awake without the screen being on.
Click to expand...
Click to collapse
I know that, not sure how you extracted that from my post though. Yes it's possible that the device fails to enter deepsleep so something could keep it awake. However I was saying that since his awake and phone on times are very different, it seems like a reboot occurred.

Ace42 said:
I know that, not sure how you extracted that from my post though. Yes it's possible that the device fails to enter deepsleep so something could keep it awake. However I was saying that since his awake and phone on times are very different, it seems like a reboot occurred.
Click to expand...
Click to collapse
Sorry about that its because I hit the quote button for your post instead of the OP's. My awake time is twice that of screen time also but I have a lot of things that will wake it out of sleep. Specifically I get a lot of notifications throughout the night from texts, and emails to games.

[Q] 15 - 20% battery drain over 8 hours while idle/sleep mode, any ideas?

Hey guys. I just got a Nexus 7 recently (sold used, but "like new", description said it was used briefly for a day and then packed back in the box again). It was working really well until I flashed this kernel. I had CM10.1 on it for a while and flashed that kernel so I could use CIFS.
After I tried this, I saw the the battery had gone from around 75% to 55% one night (over 8 hours). This is much worse than it was before, where it would only drain around 3%, or at most 5%.
I understand that my issue is probably simple: Just flash a different/old kernel or a new ROM and see if it helps. But I was wondering if there's a way to see specifically what is draining the battery. I tried getting Battery Analyzer, but says that "android keyboard" uses the most CPU, and the actual battery settings says, other than the screen, that "Media Server" is using 8% of the battery, as well as System Idle or something.
I don't know what this means exactly. But I do want to know a couple of things:
1. How can I know for sure what is causing the battery drain. Is there any way to figure it out?
2. How can I troubleshoot this, that is, I want to try disabling features and seeing how much the battery drains after that.
In the mean time, I'm gonna flash a different ROM and I'm sure that'll fix it for now. But I'll have a NAND backup just in case.

http://forum.xda-developers.com/showthread.php?t=1179809
Install. Follow directions. Post log as an attachment into their thread asking for help.
High loss while idle implies wakelocks and possibly CPU activity.

I actually found this before and tried it. It showed something with Google+ being highest with partial wakelocks, though I didn't fully understand it. I ended up removing the G+ widget from my home screen on a whim and it seemed to help a lot, only reduced 3% over 8 hours. I'd like to improve even that if possible, but that's how it was when I got it, so I'm really pleased with that. And hopefully it's not a fluke, I'll have to see what happens another night.
Thanks anyway. I'll monitor it more and see if there's anything else I can do.

I use System Tuner to set the off-screen CPU max to 384, seems to help a lot.
ES-5000 said:
I actually found this before and tried it. It showed something with Google+ being highest with partial wakelocks, though I didn't fully understand it. I ended up removing the G+ widget from my home screen on a whim and it seemed to help a lot, only reduced 3% over 8 hours. I'd like to improve even that if possible, but that's how it was when I got it, so I'm really pleased with that. And hopefully it's not a fluke, I'll have to see what happens another night.
Thanks anyway. I'll monitor it more and see if there's anything else I can do.
Click to expand...
Click to collapse

go to recovery mod__ try clear battery status etc..

ghao said:
go to recovery mod__ try clear battery status etc..
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May have well just have told him to only touch his tablet on even numbered dates and to only charge it face down on an espresso colored end table. They have the same effect on battery charge and indication that wiping battery stats does. The myth of wiping battery stats was clearly and concisely given an official debunking about a year and a half ago. If anything, wiping battery stats will hinder the OP, not help.

ghao said:
go to recovery mod__ try clear battery status etc..
Click to expand...
Click to collapse
And how am I suppose to do that???

ashik992 said:
And how am I suppose to do that???
Click to expand...
Click to collapse
It's not important, as it does nothing for battery life.

ES-5000 said:
Hey guys. I just got a Nexus 7 recently (sold used, but "like new", description said it was used briefly for a day and then packed back in the box again). It was working really well until I flashed this kernel. I had CM10.1 on it for a while and flashed that kernel so I could use CIFS.
After I tried this, I saw the the battery had gone from around 75% to 55% one night (over 8 hours). This is much worse than it was before, where it would only drain around 3%, or at most 5%.
I understand that my issue is probably simple: Just flash a different/old kernel or a new ROM and see if it helps. But I was wondering if there's a way to see specifically what is draining the battery. I tried getting Battery Analyzer, but says that "android keyboard" uses the most CPU, and the actual battery settings says, other than the screen, that "Media Server" is using 8% of the battery, as well as System Idle or something.
I don't know what this means exactly. But I do want to know a couple of things:
1. How can I know for sure what is causing the battery drain. Is there any way to figure it out?
2. How can I troubleshoot this, that is, I want to try disabling features and seeing how much the battery drains after that.
In the mean time, I'm gonna flash a different ROM and I'm sure that'll fix it for now. But I'll have a NAND backup just in case.
Click to expand...
Click to collapse
Try turning off the daydream. Though it shouldn't be the problem. and please attach the screen shot of your battery usage it may help us to find out what's wrong.

Install cpu spy app frm playstore nd chk ur mobile is getting deep sleep mode or not....!!
Sent from my LG-E975 using xda premium

Battery Life Help! BatteryStats LogCat Help Please!

Guys, I am getting terrible battery life on the newest BajaRom. I was getting decent battery life but somehow everything changed. I want to note that I cannot access the Media Battery Drain Fix in the BajaROM settings as it crashes EVERYTIME i open it. I have tried everything to install something that will fix media battery drain but I am unsure if this is what is really causing my battery drain. Please any help would greatly be appreciated!
Installed on STOCK slot
SYNC, Bluetooth: OFF
Powersaving/Smart Network: ON
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Nobody?

Wakelock Detector and Greenify... are ur best friends on the Note 3.
Turnoff wifi,bluetooth,gps,etc when not in use. Set CPU to on demand. I always have power saver on unless I want to run a game... doesn't seem to effect anything else.
There are a ton of tips for Note 3 battery life...just search here...
I also use LUX for screen brightness, that made a big difference also. Change you wallpapers to darker colors... mine are some sort of black background...
I can make through the day with reasonable usage on Hyperdrive RLS8 and still have battery left...
Haven't tried BajaROM yet...

dasdman said:
Wakelock Detector and Greenify... are ur best friends on the Note 3.
Turnoff wifi,bluetooth,gps,etc when not in use. Set CPU to on demand. I always have power saver on unless I want to run a game... doesn't seem to effect anything else.
There are a ton of tips for Note 3 battery life...just search here...
I also use LUX for screen brightness, that made a big difference also. Change you wallpapers to darker colors... mine are some sort of black background...
I can make through the day with reasonable usage on Hyperdrive RLS8 and still have battery left...
Haven't tried BajaROM yet...
Click to expand...
Click to collapse
Thank you for your response. I have greenify'd most of my daily apps and I use wake lock detector and still cant find out the culprit here. It says that my SCREEN is taking up 30% of my battery life after just 2 hours unplugged and minimal use and I'm down to 82%. Can my phone just be inherently defective????
This DOESNT feel right. I NEVER had any complaints of battery with my NOTE 2

Sex

badboyg200 said:
Guys, I am getting terrible battery life on the newest BajaRom. I was getting decent battery life but somehow everything changed. I want to note that I cannot access the Media Battery Drain Fix in the BajaROM settings as it crashes EVERYTIME i open it. I have tried everything to install something that will fix media battery drain but I am unsure if this is what is really causing my battery drain. Please any help would greatly be appreciated!
Installed on STOCK slot
SYNC, Bluetooth: OFF
Powersaving/Smart Network: ON
Click to expand...
Click to collapse
Check your data usage. I had the similar situation, saw nothing in the battery usage area....but then checked data usage. I had over 2 Gigs of data usage from EMAIL in only 2 weeks! I had been using the std email app...and get maybe 10 emails a day. Obviously something goofy going on in the sync. Yet battery usage showed next to nothing for the sync process or email app.
I removed my accounts from the email package, froze the email package and installed AquaMail and my battery usage cut by at least half....my data use flatlined.
Obviously it takes power to use the radio for a Gig a week of data....but that does NOT seem to show in battery usage.
so check your data usage...see if email is way out in front. That may be your problem.
Sent from my Note 3 via Tapatalk

badboyg200 said:
Thank you for your response. I have greenify'd most of my daily apps and I use wake lock detector and still cant find out the culprit here. It says that my SCREEN is taking up 30% of my battery life after just 2 hours unplugged and minimal use and I'm down to 82%. Can my phone just be inherently defective????
This DOESNT feel right. I NEVER had any complaints of battery with my NOTE 2
Click to expand...
Click to collapse
I had the same issue with battery life after I flashed to and of the KK roms. My problem was Greenify, and I don't know why. Removing it didn't solve my problem so I'd restart from the beginning. My drain is less than 1% per hour idle without it and almost 10% per hour running all the same apps with greenify in different settings. Jasmine ROM just drained for me all the time.
*first post, be nice. I only joined because of all the trouble I went through to get my battery life back.