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Updated to 7.1 and now have horrible battery life

Hey folks,
I was running CM 7.1 RC1 with no problems other than the occasional Sleep of Death. But I recently updated to 7.1 and now my Nook dies in one day from about 50% battery without any use, (this has happened twice)!
I'm recharging it now so I can't check my settings but maybe I need to reset my Wi-Fi sleep policy? I wiped Dalvik Cache when I did the update but nothing else. Anyone have any ideas?

Check the battery usage stats and see whats draining your battery.
edit: settings>about tablet>battery use
you can also check spare parts.

joenathane said:
Check the battery usage stats and see whats draining your battery.
edit: settings>about tablet>battery use
you can also check spare parts.
Click to expand...
Click to collapse
Just checked battery usage and Wi-Fi is 85%.
Looks like I needed to redo my Juice Defender set up.

I always run my Nook with wifi off until I need it.

patruns said:
I always run my Nook with wifi off until I need it.
Click to expand...
Click to collapse
Same. With the notification bar Widgets it is easy to do.
Sent from my NookColor using xda premium

If you are running a wifi widget, I suspect it will cause additional battery drain. I used to have WiFiWIdget (2K-Group) running and I felt that it caused excessive drain. I have since removed it since I ran 122N and 7.1 and have not had excessive drain nor SOD.

Juice Defender seems to be acting a little funky so I went ahead and changed the Wi-Fi policy in Spare Parts. Seems to be working fine now.

In the settings menu for WiFi, I just choose to either have wifi turn off when the screen goes off or leave it on while plugged in. I've never had a problem with waking up the Nook and it automatically reconnecting to my WiFi.

[Q/Issue] Deep sleep with wlan on?

Hi!
I just noticed that my phone does not go to deep sleep if I have wlan on. Though I do not have any long wakelocks according to BetterBatteryStats, just some minutes total while the device have been awake for much more.
Stock .534 unrooted, newly repaired with _only_ BetterBatteryStats and CPU Spy installed. No accounts added etc.
Wlan/Advanced: "Always on"
Location-based wlan: "on"
Low battery mode: "on"
STAMIN mode: "off"
Location based services "on" / "off" tested.
When I have wlan on CPU Spy reports as Deep sleep unused, and instead most of the time is spent in 300 MHz.
Any of you that can reproduce?

Have the same problem. Is that normal that it doesnt goes to deep sleep ?

muslim187 said:
Have the same problem. Is that normal that it doesnt goes to deep sleep ?
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Click to collapse
No, it's absolutely not normal. Something is keeping the device awake, probably a bug.
I left the device over night,
wlan kernel wakelock for 7h, but no long-standing partial wakelocks. I don't get it, how can something keep wifi awake without actually issuing a wakelock?

Bah I have suddenly been afflicted with this issue since yesterday. Noticed battery drain from 100% to 33% with minimal use between this morning and lunchtime while at work. Currently it is charging off my laptop but only holding its own, not increasing. Only had it a week, very little installed on it.

Battery life was fine for the first week of ownership, today it lost 75% with little or no use in 5 hours, then it did not charge when connected by USB to laptop it merely held the same charge, before quickly discharging again when disconnected.
No deep sleep all day
https://www.dropbox.com/s/b19ixx16dgnqrcb/2013-10-07 17.46.20.png

Inquitus said:
Battery life was fine for the first week of ownership, today it lost 75% with little or no use in 5 hours, then it did not charge when connected by USB to laptop it merely held the same charge, before quickly discharging again when disconnected.
No deep sleep all day
https://www.dropbox.com/s/b19ixx16dgnqrcb/2013-10-07 17.46.20.png
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Click to collapse
Hi, can you please verify that you indeed do not have any wakelocks caused by any other third-party programs you have installed? Just to knwo that we are in fact experiencing the same issue. You could also try to disable wlan (and mobile data (I haven't tested to turn that on, as I do not yet have a data plan).
The application needed to test that is Better Battery Stats, available here on XDA (or on Play): http://forum.xda-developers.com/showthread.php?t=1179809

Exry said:
Hi, can you please verify that you indeed do not have any wakelocks caused by any other third-party programs you have installed? Just to knwo that we are in fact experiencing the same issue. You could also try to disable wlan (and mobile data (I haven't tested to turn that on, as I do not yet have a data plan).
The application needed to test that is Better Battery Stats, available here on XDA (or on Play): http://forum.xda-developers.com/showthread.php?t=1179809
Click to expand...
Click to collapse
Today's issue on my phone was driven by several hours of a "bam_dmux wakelock."
edit: and no partial wakelocks so no idea of the driver.

Inquitus said:
Today's issue on my phone was driven by several hours of a "bam_dmux wakelock."
edit: and no partial wakelocks so no idea of the driver.
Click to expand...
Click to collapse
Ok. So it might be the same issue then, though I don't really know what the "bam_dmux" wakelock is.

FYI Mine is back to normal today. Lost 3% in 3 hours of light use. Only thing I have changed is I deleted a Wifi network from my preferred list that the phone was having trouble connecting to, may or may not be related.

Tremendous battery drain on WIFI

Hey guys, I am running stock 4.0.3 rooted with supersu and using the latest franco kernel. I am getting massive drains even while using the phone on wifi and keeping it on standby, while connected to wifi. Getting drains about 3.3-4% per hour on standby on wifi. This is absolutely crazy. I tried some older suggestions mentioned here https://forum.xda-developers.com/showpost.php?p=62074306&postcount=118 . But even that doesn't work. Battery drain is normal on mobile data, but when connected to wifi it absolutely goes crazy. Can anyone provide any insight? There are no rogue apps, I have been checking through better battery , wld , accu battery, etc.

You've probably already turned it off, but I'll just point it out in the rare instance, but make sure scanning is off. However, I did notice that you said it is when wifi is on and your phone is sleeping when you get that drain. A fix is to go into wifi settings and under "Keep Wi-fi on during sleep", pick the only plugged in option. Ideally, you should get to the bottom of this issue, but if you don't have the time and no one else figures it out, this may help.
EDIT: I wonder if smart wifi switcher has anything to do with it? Wifi connectivity fluctuates and if you have two connections that have very similar signal strength, would your phone constantly switch between the two networks in a futile manner? If this does happen, I can see that draining your battery significantly, but this is based on the premise that the switcher does not have some type of buffer zone where it does not switch if the difference is negligible.

Inflection said:
You've probably already turned it off, but I'll just point it out in the rare instance, but make sure scanning is off. However, I did notice that you said it is when wifi is on and your phone is sleeping when you get that drain. A fix is to go into wifi settings and under "Keep Wi-fi on during sleep", pick the only plugged in option. Ideally, you should get to the bottom of this issue, but if you don't have the time and no one else figures it out, this may help.
Click to expand...
Click to collapse
Yep, I always keep scanning off! And i did try with that suggestion too, I changed the setting to never and it still drained battery. Wifi stayed on for sometime even though i set it to never and then finally turns off after a period of time, but i think that could potentially drain more battery? Are you using wifi all the time? What are your stats?
I have all those settings turned off, smart switcher, ipv6, scanning, etc

Anomaly65 said:
Yep, I always keep scanning off! And i did try with that suggestion too, I changed the setting to never and it still drained battery. Wifi stayed on for sometime even though i set it to never and then finally turns off after a period of time, but i think that could potentially drain more battery? Are you using wifi all the time? What are your stats?
I have all those settings turned off, smart switcher, ipv6, scanning, etc
Click to expand...
Click to collapse
Last thing I can think of is trying to use stock kernel to see if it is FK that is the culprit. FK shouldn't be the issue, but perhaps something screwed up during the flashing process? Now I'm essentially just asking you to do trial and error

Inflection said:
Last thing I can think of is trying to use stock kernel to see if it is FK that is the culprit. FK shouldn't be the issue, but perhaps something screwed up during the flashing process? Now I'm essentially just asking you to do trial and error
Click to expand...
Click to collapse
Nah man, I trust FK more than stock
I have had similar issues with stock as well.
What are your battery statistics?

Anomaly65 said:
Nah man, I trust FK more than stock
I have had similar issues with stock as well.
What are your battery statistics?
Click to expand...
Click to collapse
Note that I'm in Beta 3 and running its stock kernel so I don't really see the usefulness of giving my battery stats, but yes, battery life for me has been good and unaffected by wifi draining.

Inflection said:
Note that I'm in Beta 3 and running its stock kernel so I don't really see the usefulness of giving my battery stats, but yes, battery life for me has been good and unaffected by wifi draining.
Click to expand...
Click to collapse
Whoa, how the hell do you even get 2 hours 17 mins sot with 85% still remaining?
Is it really just me suffering from this wifi drain bug?

Anomaly65 said:
Whoa, how the hell do you even get 2 hours 17 mins sot with 85% still remaining?
Is it really just me suffering from this wifi drain bug?
Click to expand...
Click to collapse
It's most likely not just you, but based on my perusal of the 3T forums (especially on the FK thread because that's most relevant to how you set up your phone), not many people are facing this issue. Does betterbattery stats not show anything funky or out of the ordinary? Can you post a screenshot of your betterybattery stats including the kernel wakelocks, alarms, and partial wakelocks page?

Inflection said:
It's most likely not just you, but based on my perusal of the 3T forums (especially on the FK thread because that's most relevant to how you set up your phone), not many people are facing this issue. Does betterbattery stats not show anything funky or out of the ordinary? Can you post a screenshot of your betterybattery stats including the kernel wakelocks, alarms, and partial wakelocks page?
Click to expand...
Click to collapse
Check these out. I am totally fed up. I think I might have a faulty unit.
Getting 4% drain on standby!

Anomaly65 said:
Check these out. I am totally fed up. I think I might have a faulty unit.
Getting 4% drain on standby!
Click to expand...
Click to collapse
I'm beginning to think it's not wifi, but the app Saavn. It may act differently when on wifi vs on cellular data and remain active constantly when on wifi. I google searched the app and its potential of being poorly optimized app, and there are reports of it never turning off and running in the background. If that is the case, it should be showing up on BBS as more of a drain, but for some reason it isn't. Still, try uninstalling the app and see what happens.
In the end, if this doesn't solve the issue, I'm beginning to think a factory reset maybe in order. I wish you also gave me BBS alarm wakeups page because that would help see if Saavn is constantly firing off alarms or not.

Go to your "Location settings" and into the 3 dot menu in upper right. Turn everything off.

do you have wifi calling on? turn it off and see

smajlo said:
Go to your "Location settings" and into the 3 dot menu in upper right. Turn everything off.
Click to expand...
Click to collapse
I have them turned off since day 1
masri1987 said:
do you have wifi calling on? turn it off and see
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Click to collapse
Where exactly is the setting to turn it off?

Anomaly65 said:
I have them turned off since day 1
Where exactly is the setting to turn it off?
Click to expand...
Click to collapse
settings > sim and network > look towards the bottom

masri1987 said:
settings > sim and network > look towards the bottom
Click to expand...
Click to collapse
I don't have any option to turn off wifi calling in there. I am running the beta 7.1.1 now though. But the problem still persists. Too much drain when using wifi, it's being shown as android system drain. I've seen many people reporting it, so it's not just me. But for the life of me, I can't figure out what's causing it!

Issue resolved with latest 4.1.0 and some usage pattern changes. Mod, please close the thread. Thank you!

Poor Battery Life - HELP!

So, over the last week, I have noticed such poor battery life. My battery is not performing as it once did.
I recently downloaded Power Shade, so I decided to disable it (not uninstall it). It's not listed in the Play Store at this time.
I have noticed that Android System uses a lot of my battery, while my battery life drops like a rock while I have my screen on. I never have my screen brightness passed 25% (and it is usually less).
Please take a look at these screenshots. What is going wrong?

Dankees said:
So, over the last week, I have noticed such poor battery life. My battery is not performing as it once did.
I recently downloaded Power Shade, so I decided to disable it (not uninstall it). It's not listed in the Play Store at this time.
I have noticed that Android System uses a lot of my battery, while my battery life drops like a rock while I have my screen on. I never have my screen brightness passed 25% (and it is usually less).
Please take a look at these screenshots. What is going wrong?
Click to expand...
Click to collapse
It says your phone has been on the battery for over 15 hours.. I don't see how that's considered bad? That's pretty much what I get.

Install BBS, grant permissions and check what is messing your battery. That is awful SOT

vojopd said:
Install BBS, grant permissions and check what is messing your battery. That is awful SOT
Click to expand...
Click to collapse
Would AccuBattery tell me?

Dankees said:
Would AccuBattery tell me?
Click to expand...
Click to collapse
Run it and find out

sefrcoko said:
Run it and find out
Click to expand...
Click to collapse
How are the two apps different?

sefrcoko said:
Run it and find out
Click to expand...
Click to collapse
Well, I turned on Power Shade and left my phone untouched for one hour. My battery dropped 5%.
Then, I turned it off and left my phone alone for another hour and it went down only 2%.
So, that's the culprit?

I'm not sure if your battery drain is regarding normal usage or standby time.
If it's a standby drain, I would suggest installing Naptime app from the playstore. Grant the permissions via ADB, your standby battery life would be great.
I've experienced a really good battery mileage after installing the app.
Make sure you enable to aggressive doze option and keep the app out of power save or the sleeping apps option.
Also, try turning off Location and see if Android System percentage goes down.

Unix_Dominator said:
I'm not sure if your battery drain is regarding normal usage or standby time.
If it's a standby drain, I would suggest installing Naptime app from the playstore. Grant the permissions via ADB, your standby battery life would be great.
I've experienced a really good battery mileage after installing the app.
Make sure you enable to aggressive doze option and keep the app out of power save or the sleeping apps option.
Also, try turning off Location and see if Android System percentage goes down.
Click to expand...
Click to collapse
Is this tough to do?
I had Location set to "High Accuracy" - I have now changed that to "Battery Saving."
Better?

Dankees said:
Is this tough to do?
I had Location set to "High Accuracy" - I have now changed that to "Battery Saving."
Better?
Click to expand...
Click to collapse
The naptime app is a piece of cake if you have root access, if your phone is not rooted, the app will suggest some steps you can follow to allow it function properly. For the non-root method, you will require a computer and ADB (Android Debug Bridge) to be installed in the computer.
If you kept location service to battery saving then maybe it might help save battery juice.

Unix_Dominator said:
The naptime app is a piece of cake if you have root access, if your phone is not rooted, the app will suggest some steps you can follow to allow it function properly. For the non-root method, you will require a computer and ADB (Android Debug Bridge) to be installed in the computer.
If you kept location service to battery saving then maybe it might help save battery juice.
Click to expand...
Click to collapse
I think I will stick with the Location setting change.
I'm also finding TuneUp Master Pro to be helping.
What do you think of BetterBatteryStats?
Later today, I can post screenshots.
Right now, I am at 63% battery left with 2 hours of screen time. (Note, much of this has been with super low battery brightness.)

Unix_Dominator said:
The naptime app is a piece of cake if you have root access, if your phone is not rooted, the app will suggest some steps you can follow to allow it function properly. For the non-root method, you will require a computer and ADB (Android Debug Bridge) to be installed in the computer.
If you kept location service to battery saving then maybe it might help save battery juice.
Click to expand...
Click to collapse
Do you have certain settings that you think I should really have (without any repercussions) that you could screenshot me?

What do you think of these settings?
About 7 hours were not on Wi-Fi...

Dankees said:
I think I will stick with the Location setting change.
I'm also finding TuneUp Master Pro to be helping.
What do you think of BetterBatteryStats?
Later today, I can post screenshots.
Right now, I am at 63% battery left with 2 hours of screen time. (Note, much of this has been with super low battery brightness.)
Click to expand...
Click to collapse
Hey,
I think TuneUp Master Pro might help you, I haven't actually used BetterBatteryStats.
But I saw your screenshot, one thing I noticed is that you keep bluetooth switched on (Android Wear)?, If so then I think maybe that is your issue (I'm saying this cause I have a Gear 2 connected to my Note8, when the device is connected it takes some amount of battery). Try to use your device without bluetooth for maybe 1 day and see if there is any improvement in Battery Life and Screen On Time.
I would suggest other basic options like:
1. Turning off Location when you don't need it
2. Turning off Bluetooth
3. Turning off Mobile Data (or keeping the network mode to 3G/2G)
4. Delete useless apps, if you have apps like BetterBatterStats, I think they can monitor app data and battery usage.
5. Goto Settings>Device Maintenance>Battery, scroll down till the end and select "always sleeping apps", select apps that you want only to wake up when you open the apps. Go back and remove useless or unwanted apps under the unmonitored apps section (This option is right before the always sleeping apps one).
Also try doing a cache clear from Android Recovery (Be Careful when selecting the options):
1. Turn off your phone
2. Hold the Volume Up, Bixby and Power Button simultaneously until you see the boot screen, as soon as you see that screen release your fingers from the buttons
3. Once the recovery options come, use your volume buttons to move up and down, and the power button to select an option.
4. press volume down and select the clear cache option, press the power button, use the volume down button again to select "Yes" and press the power button.
5. It will clear Cache
6. Restart your, its the first option in the menu.
This might helps the phone clear cache files and maybe fix your battery issue.
It would also be good if you install this app, after installing goto the "Personal" tab and check if your battery health is good, mine is 91%. You should also be in that range or maybe 80%. If the percentage is bad then maybe I think you would require a battery replacement. Correct me if I am wrong guys, but just a suggestion.
One more thing, is your phone rooted or having a custom rom?, if yes I suggest to try Naptime and other rooted battery saving apps like Greenify.
If not then I think you and me will have to hope that Android 9.0 Pie would have some improvement, sadly I have been a Samsung user for 4 to 5 years, this isn't usually the case with Samsung OS updates .

Based on this, I don't think I have anything rogue going on, do you?
(Notice that I didn't use my phone at all during this time, nor did I leave home.)

OK, I have attached stats for my phone from today.
Please take a look.
When not using my phone, my battery only dropped about 2% per hour, which is great. But when my screen was on, I seemed to have lost a lot of power. I can't even get 4 hours of screen on time.
What would cause tis to happen? I barely have my screen brightness at 20%.

Does this tell you more? It shows battery usage with cell phone signal.
(I was off Wi-Fi for about the last 6 hours of the day.)
Does this show a slower battery drop with a better signal?

Dankees said:
OK, I have attached stats for my phone from today.
Please take a look.
When not using my phone, my battery only dropped about 2% per hour, which is great. But when my screen was on, I seemed to have lost a lot of power. I can't even get 4 hours of screen on time.
What would cause tis to happen? I barely have my screen brightness at 20%.
Click to expand...
Click to collapse
Chrome and facebook drain lot compared to others. Are you putting them (and others) to sleep using device management? Also, 2.7% drain per hour isn't fantastic. You can drop that to approx 1% if you tame enough things on your phone.

Dankees said:
OK, I have attached stats for my phone from today.
Please take a look.
When not using my phone, my battery only dropped about 2% per hour, which is great. But when my screen was on, I seemed to have lost a lot of power. I can't even get 4 hours of screen on time.
What would cause tis to happen? I barely have my screen brightness at 20%.
Click to expand...
Click to collapse
2% per hour for rooted phone is very bad. In 10 hours you loose 20% battery, looks very bad too. If you open the 4g you loose 40%. I loose 2% every 10 hours and i have 95% kernel deep sleep. Your System have big drain in first picture. Debloat your rom and fix your bad wakelocks with amplify and with appops. Possible change your rom and your kernel if you are not rooted. If you are not rooted god bless you, or read the xda threads to learnd about the phones. All your apps have very bad wakeup issues. This apps run all the time and dont leave the phone to sleep. You use malware bytes into android.... the linux is not windows 10. You dont need this crap apps.

sefrcoko said:
Chrome and facebook drain lot compared to others. Are you putting them (and others) to sleep using device management? Also, 2.7% drain per hour isn't fantastic. You can drop that to approx 1% if you take enough things on your phone.
Click to expand...
Click to collapse
Should they always be sleeping?

Massive battery drain before and after wipe

Hi. Can someone help me with my problem?
Im facing massive battery drain even after wipe, im only getting around 3/4h SOT. In BBS, 2 alarms are weird Job.delay. And job.deadline. I have wiped my phone, installed last version of rom, after that i have restored my apps. Problem still exist. Next i have installed kirasakura kernel and then frozen every of my apps, and its still there. After night im losing around 10/20% of battery. Im attaching some screens from bbs. Thanks in advance for every help.

i'll try to help as much as i can. install servicely and look at running services. if you see something weird, stop that service.
also, i see you're using bluetooth. that thing drained my battery as bluetooth would stay turned on even when it says it's off. what you can do is turn it on and off and it should stop bluetooth service from running.
in servicely you can disable apps from running in the background. maybe some app is running full throttle even tho you thought you closed it.
another thing you can check is if xmode is running. once i had system turning on xmode on even tho i closed the app that used it.
as you're rooted, check with some kernel manager what cpu governor is turned on. maybe the system is stuck in performance mode.
lastly, you can check your battery capacity. maybe it needs calibration. that could also result in battery drain as it's not charged to the max.
also, android 10 is generaly badly optimised for our phone. it has some good features, but powerwise it's not that efficient.
if nothing works out, i'd suggest returning to latest android 9 and do battery calibration.

Thanks for answer. I have installed servicely but im not see anything suspicious. Xmode is off, governor ist in performance mode. About battery calibration, i dont need extra juice from my battery, i want to lose 1% over night, not 20%.. Probably around July/august everything was fine, my battery last for almost 3 days, now something eating it alive and i dont know what is it. Can i somehow check which app generate this "job" alarms? In BBS its "Android" only..

battery calibration isn't about extra juice, it's about system showing the right percentage. you could lose a lot of battery because it doesn't get charged to its max capacity.
there could also be a problem with the lastest update. when i was seeing a lot of battery drain, i had it because system constantly used location services. check in services if there are any location processes running. also it could be because of network. maybe your phone is constantly switching between 3g and 4g.
you can also check in the kernel manager what is your current battery draw in mAh. if its always over 300mAh, then you have a problem.
look for a wakelocks running in the background and disable and enable some to get them resetted.

Probably u have solved my problem. Even after turning off location, i still have some running services with location in name. I have blocked all of them in servicely and after night i lost 1% of battery. I will check now in later days. Thanks a lot

DarkSoul88 said:
Probably u have solved my problem. Even after turning off location, i still have some running services with location in name. I have blocked all of them i servicely and after night i lost 1% of battery. I will check now in later days. Thanks a lot
Click to expand...
Click to collapse
A reload generally solves nothing and wastes time. It's always best to find the root cause(s) and address them directly otherwise they tend to reoccur.
Viruses (never had to), boot loops (prey it works) and old loads are the only times I reload.

DarkSoul88 said:
Probably u have solved my problem. Even after turning off location, i still have some running services with location in name. I have blocked all of them in servicely and after night i lost 1% of battery. I will check now in later days. Thanks a lot
Click to expand...
Click to collapse
yeah i thought it could be that. it's also worth checking if you have "find my phone" turned on. it's somewhere in the settings. search for device admin apps. if you see any apps turned on as device administrators, turn that off. those could also drain battery

Yep, i have turned off "find my phone" now. Thanks once again. Now i have nearly 8h SoT again. I hope it will be all good now

i'd still do battery calibration if i were you. 8 hours of sot is not that much. i mean, it is if you're playing games all the time

After couple of days, problem is back. No new apps, 3 days was good, 0/1% drain in night, now its again about 15/20%. I will just sell this phone becouse i dont have any more patience...6000mah and my OP3 with half of that value can ez get about 5h sot. Aktually im getting about 3/4h sot and 3h calls. When i have bought this phone i have had about 10 h SOT and 5 h of calls in 3 days of usage. Never again gonna buy phone from asus. Thanks guys for every help

i wouldn't condemn the whole brand because of one phone model.
also try going back to android 9 and check how's the battery drain without any apps installed. then start installing your apps and monitoring if the drain will increase.
i'm currently on android 10 and there is some major problem with battery regulation. raw capacity goes below zero when the percentage is below 10 percent. no wonder the whole system starts stuttering when battery level is below 3%.