Database Users

[Q] sudden drop in battery life

I've got the 16gb nexus 7 (non 3g).
I've had it for less then a year and the battery life had been great. But starting over the last few days the battery is horrible. After a full charge over night my battery was down to 50% today. And that's with hardly any use. I used it for maybe an hour total and at least half of that time was just reading reddit.
I haven't changed any settings recently. This is all stock, no mods, not even rooted.
The battery usage right new says it's been 13 hours, and it's down to 48% and Android os accounts for 27% Followed by screen at 18% and WiFi at 9%. Those are the top 3 showing for battery usage.
Any suggestions as to what's going wrong it how to diagnose be fix it?
Thanks

Either your battery is bad or you have a stray process running somewhere.You might want to factory reset it, possibly even reflash your image.

iBolski said:
Either your battery is bad or you have a stray process running somewhere.You might want to factory reset it, possibly even reflash your image.
Click to expand...
Click to collapse
Would the battery go bad that fast though? In my experience batteries usually gradually get worse. This went from losing a few percent of power to losing half power in the span of a day.
I might try the factory reset - just have to make sure everything is backed up. This tablet isn't rooted so i dont have titanium backup on it.

merkk said:
I've got the 16gb nexus 7 (non 3g).
I've had it for less then a year and the battery life had been great. But starting over the last few days the battery is horrible. After a full charge over night my battery was down to 50% today. And that's with hardly any use. I used it for maybe an hour total and at least half of that time was just reading reddit.
I haven't changed any settings recently. This is all stock, no mods, not even rooted.
The battery usage right new says it's been 13 hours, and it's down to 48% and Android os accounts for 27% Followed by screen at 18% and WiFi at 9%. Those are the top 3 showing for battery usage.
Any suggestions as to what's going wrong it how to diagnose be fix it?
Thanks
Click to expand...
Click to collapse
merkk said:
Would the battery go bad that fast though? In my experience batteries usually gradually get worse. This went from losing a few percent of power to losing half power in the span of a day.
Click to expand...
Click to collapse
Doubtful it's the battery... my money is on a rogue app!!!
Hi, merkk...
It's possible, that as the previous poster suggests, some rogue app is 'eating' your battery.
The biggest consumer of power is the screen, so ensure you haven't got it set it maximum brightness... and ensure auto-brightness is enabled in settings.
Another thing you can check, is your WiFi setting... on my Nexus 7, I have 'Keep WiFi on during Sleep' set to 'Never'... it's not a setting that is easily found - it's buried in SETTINGS>>Wi-Fi>>overflow MENU (three dots, top right hand corner)>>ADVANCED>>Keep WiFi on during Sleep.
It also might be worth checking if the SYNCING of your respective accounts (Google, Twitter, etc.), haven't been inadvertently changed. Particularly the SYNCING of your Google account... which by default, SYNCs a lot of stuff and frequently. This will keep WiFi awake, and may cause battery drain. Go to SETTINGS>>ACCOUNTS>>GOOGLE and disable what you don't need to be SYNCed.
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It's unfortunate that your Nexus 7 isn't rooted, because there are a couple of excellent diagnostic apps available (GSam Battery Monitor and BetterBatteryStats) which provide more granular and finely detailed battery info/history than the standard Android battery info screen... and are useful for tracking down problematic apps that might be keeping the device unnecessarily awake ('wakelocks', etc.).
However, due to changes in Android 4.4 (KitKat), these apps now require root access to read and report battery stats info.
If your Nexus 7 is running any version of Android BEFORE 4.4 KitKat (and some haven't updated yet), then you don't need root to run these diagnostic apps.
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It's sometimes the case, with Android, that there will be occasional peculiarities with battery performance... and in my experience, it's almost always the case, it's due to something the user did... some app or widget installed. I'm currently experiencing similar battery issues on my Samsung Galaxy S3, but having run GSam for a couple of days, I think I have the culprit identified. If I can't eliminate the problem, I'll uninstall the app.
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Hope my ruminations are of some use.
Rgrds,
Ged.

Gedblake, thanks for the suggestions. For whatever reason, today it seems to be back to normal. The only thing i did last night was drain the batter to around 10%, turn it off, and let it charge while turned off.
Turned it back on today,used it for about 15 minutes or so playing a game. And now just about 5 hours after turning it on, it's down to 92% which is what I'd normally expect.
I'll try some of your suggestions if the problem re-occurs.

I noticed that my N7 (2012) has been draining quite a bit lately. Watching the battery stats, it seems Google Wallet was eating up some major battery. It was 2nd at 29% with the screen number 1 at 38%.
Not sure what the heck Google Wallet was doing, but I killed it and things seem to have stabilized.

battery drain after update?
For years I've had the same routine. I use my Nexus 7 all day for work, mostly notes. In between I play, (youtube, E-reader, etc). Every night I plug it in to charge and in the morning it's fully charged and ready to go. On Tues, I received the OTA update for 4.4.4 I noticed this morning that after a full night's charge, the battery only reports 50% charge. Is this the beginning of the end? What steps should I take from here? I recently bricked by GS3 so I depend on this thing now more then ever, any help would be sooooo appreciated.

exarkun631 said:
For years I've had the same routine. I use my Nexus 7 all day for work, mostly notes. In between I play, (youtube, E-reader, etc). Every night I plug it in to charge and in the morning it's fully charged and ready to go. On Tues, I received the OTA update for 4.4.4 I noticed this morning that after a full night's charge, the battery only reports 50% charge. Is this the beginning of the end? What steps should I take from here? I recently bricked by GS3 so I depend on this thing now more then ever, any help would be sooooo appreciated.
Click to expand...
Click to collapse
I'd just restart it and let it charge again. I've updated mine a while ago and haven't had any issues.

merkk said:
I'd just restart it and let it charge again. I've updated mine a while ago and haven't had any issues.
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Click to collapse
I'm on a custom 4.4.2 ROM and I have had intermittent draining behavior as well.
Sync is off, location services off, I turn off wifi manually, and I always clear recents before I have my tablet sleep. I have greenify installed. I'm using better battery stats.
My issue seems to be similar, but I am also having battery percentages jump around.
Earlier today it went from 26% to 43% in the middle of me using it. Without charging. It frequently does this, both lesser and greater values reported. I've had my tablet shut down in the 30% range. I've had it shut itself off on 4%. I've had it drain all the way to 0% and then some before shutting down. I've had it turn itself off and when I power it back on the tablet is thinking it is at 25% or more.
I haven't been getting much more than an hour of screen time with my tablet lately. Clean fresh install of my ROM.
But I've never, until the last couple of days, had it go from a small percent to a large percent active during use. I took screenshots. I even started a thread to talk about it but nobody has responded yet.
Has anyone else ran into this behavior? Is it a sign of a soon to be dead battery?

mine got almost 30% drained on idle, airplane mode, screen off for 3 hours (tested on stock rom 4.4.3. GApps + Swiftkey + BBM + Facebook only)
my nexus 7 never lasted a day, only half a day max.
trying GSam app, hope it helps in knowing what's eating up batteries.

Note 3 | 4.4.2 version|battery drain of 22% overnight.

Hello All,
I'm using note 3 France version. I notice that overnight my phone is getting, yesterday night my phone was charged till 93%and i closed all the running apps & when i see this morning, am left with 71% of juice.
Stock Android + no root.
When i look at the battery graph, it just says "android os" for 100%.
Is it actually hiding any of the background process?
Is this normal?
Sent from my SM-N9005

In my case, the sd card is the culprit. Every thing back to normal when i remove the sd card.
Sent from my SM-N9005

SD card shouldn't be a problem, many people use them without any issues, you may have experienced indexing bug, some program residing partially on a card got shot down, when card was removed, or something of this nature.
As far as OP goes, even battery display itself is weird, never seen anything like that. On mine Android OS, Android System, cell standby, device idle, something from Google and screen will show up at the minimum. In your case it seems every other battery usage had to be very small, way less than 1%, If you press on Android System, you will get more details, but no matter what I would do full factory reset to start with, since neither 22% idle discharge nor battery display is normal. Just make sure you have full backups, since you'll loose all settings and need to reinstall all programs.

sbk_hbk said:
Hello All,
I'm using note 3 France version. I notice that overnight my phone is getting, yesterday night my phone was charged till 93%and i closed all the running apps & when i see this morning, am left with 71% of juice.
Stock Android + no root.
When i look at the battery graph, it just says "android os" for 100%.
Is it actually hiding any of the background process?
Is this normal?
Sent from my SM-N9005
Click to expand...
Click to collapse
Isntall wakelock detector

Note 3 battery drain problem Solved...
Hi all..
I am using a note 3 LTE N9005. I was facing the battery drain problem with my phone it used to drain at a rate of 10% an hour even when the phone was locked and kept idle. Like some one mentioned above if I kept it aside after full charging in the night it would be around 50% in the morning.
Then i installed wake lock to check what was causing the issue but couldn't find anything unusual.
Later i noticed that my android system and android OS were consuming more than 35 % charge everyday. Even wake lock and other similar apps couldn't find it.
Finally....finally i decided to uninstall few apps one by one and check if anything changes..... and yessss..... i found it.... Facebook app and Facebook messenger were the culprits. ... particularly Facebook app.
Now without them... i am getting a full 6 hours screen time and 24 hours on normal usage. Just try it.... its worth a try.
Please note : My phone : N9005
Android version : 4.4.2 KitKat
Hope this help you.

Out of Box Note 4 doesn't last 5 hours on full charge

Good day guys
Sorry if this is the wrong section for my post, not sure with the new XDA Site where to post it. I have a 3 day old Note 4 (SM-N910H) which on a full charge doesn't last 5 hours. Now I know a lot of you guys are going to ask what ive done and what i need to check. I am not new to Android Devices and this is my 3rd Galaxy Range Phone. So what iv'e done is charged it full to 100% at 9pm Saturday night, then went to bed, disabled Mobile Data and Sync and put phone on Silent. Sunday morning I woke up at 3am and wanted to see what time it is on my phone and it was dead. I put it on charge for 5 mins and switched it on on 3% bat. This is not right! I then decided to look for apps that drain the battery and couldn't find anything, so I backed up my phone and did a factory reset/wipe to see if maybe the OS wasn't messing around ......... So Sunday evening I did the same thing, charged it full and then disabled Mobile Data, Sync and put phone on silent, same thing ..... dead phone by 5am. I don't think enabling Power saving is going to make a difference cause the screen brightness is set to Auto, I dont like the CPU performance being limited in Power Saving, but still this is way to fast battery draining for a new device. I had a look at the aplications/OS battery usage and cant find anything wrong, the screen only takes 4% ...... Ive attached a screenshot of the running apps/battery usage. Ohhhh yes and the phone already has the latest firmware update too. SO I am thinking Faulty Battery?

Aquacile said:
Good day guys
Sorry if this is the wrong section for my post, not sure with the new XDA Site where to post it. I have a 3 day old Note 4 (SM-N910H) which on a full charge doesn't last 5 hours. Now I know a lot of you guys are going to ask what ive done and what i need to check. I am not new to Android Devices and this is my 3rd Galaxy Range Phone. So what iv'e done is charged it full to 100% at 9pm Saturday night, then went to bed, disabled Mobile Data and Sync and put phone on Silent. Sunday morning I woke up at 3am and wanted to see what time it is on my phone and it was dead. I put it on charge for 5 mins and switched it on on 3% bat. This is not right! I then decided to look for apps that drain the battery and couldn't find anything, so I backed up my phone and did a factory reset/wipe to see if maybe the OS wasn't messing around ......... So Sunday evening I did the same thing, charged it full and then disabled Mobile Data, Sync and put phone on silent, same thing ..... dead phone by 5am. I don't think enabling Power saving is going to make a difference cause the screen brightness is set to Auto, I dont like the CPU performance being limited in Power Saving, but still this is way to fast battery draining for a new device. I had a look at the aplications/OS battery usage and cant find anything wrong, the screen only takes 4% ...... Ive attached a screenshot of the running apps/battery usage. Ohhhh yes and the phone already has the latest firmware update too. SO I am thinking Faulty Battery?
Click to expand...
Click to collapse
you definitely have a defected unit..return it when you can

Clash of Clans is an out-of-the-box software ?
So you installed some more apps. Maybe some of them are causing wakelocks, draining the battery.
I'd try that infamous "factory reset" and checking if battery life gets better with NO additional apps installed prior to sending back the Note.

Aquacile said:
Good day guys
Sorry if this is the wrong section for my post, not sure with the new XDA Site where to post it. I have a 3 day old Note 4 (SM-N910H) which on a full charge doesn't last 5 hours. Now I know a lot of you guys are going to ask what ive done and what i need to check. I am not new to Android Devices and this is my 3rd Galaxy Range Phone. So what iv'e done is charged it full to 100% at 9pm Saturday night, then went to bed, disabled Mobile Data and Sync and put phone on Silent. Sunday morning I woke up at 3am and wanted to see what time it is on my phone and it was dead. I put it on charge for 5 mins and switched it on on 3% bat. This is not right! I then decided to look for apps that drain the battery and couldn't find anything, so I backed up my phone and did a factory reset/wipe to see if maybe the OS wasn't messing around ......... So Sunday evening I did the same thing, charged it full and then disabled Mobile Data, Sync and put phone on silent, same thing ..... dead phone by 5am. I don't think enabling Power saving is going to make a difference cause the screen brightness is set to Auto, I dont like the CPU performance being limited in Power Saving, but still this is way to fast battery draining for a new device. I had a look at the aplications/OS battery usage and cant find anything wrong, the screen only takes 4% ...... Ive attached a screenshot of the running apps/battery usage. Ohhhh yes and the phone already has the latest firmware update too. SO I am thinking Faulty Battery?
Click to expand...
Click to collapse
What's "WhatsApp" doing with your battery? I use WA a lot, and it's not consuming that much!

Thanks guys, I manged to solve the problem. I also thought of returning the device (more likely Battery). Here is what I did. I disabled fast charge, then let the phone run completely dead like till it shuts down, then i boot it again until it shuts down again making sure the battery is completely drained. Then I charge the phone on a normal charge (keeping the phone switched off) till its fully charged (green Light) and I sort of overcharge it for another hour, which on normal charge plus extra hour is about 3 hours +-. Now my phone after his last charge is running more than 16 hours and now on 52% still playing Clash of clans, using Whatsapp a lot, BBM etc
Maybe spread the word cause this has surely fixed the charge on the battery

Note 4 Fast Battery Drain

Hi,
Not sure if this is in the right section so admin please feel free to move.
Ive googled my problem and had a bit of a read but dont really get any solutions.
Ive noticed a serious battery drain since upgrading to 6.0.1 - maybe it happened on the previous version however ive just seemed to have noticed it more since i did the update.
My battery doesnt last very long. It will show 100% in the morning. If i dont use it, it can go down to about 80% within an hour or so. If i do use it then im using apps like gmail, whatsapp / sms, short phone calls, some other apps but im not on them for very long. I normally close all apps that are running in the background.
This morning it was 100%, ive used it as described above and its on 57% and its not even dinner time yet...
Ive checked the battery usage and top of the list is " Cell standby" with 48% usage showing power used is 1530mah - which is alot. The next is "my data manager" (an app to manage data usage) showing power used is 485mah (alot less!). Ive attached a screen shot.
Ive also noticed that once the battery gets to around 30% it drains even faster. I find myself using power saving mode when it gets to about 20%. It still seems to drain at a similar rate. Maybe slightly slower.
Any ideas on what i can do to recover battery time without buying a new battery. There seems to be a few topics online relating to battery drain when updating to the latest android version.
Thanks

Dowsett said:
Hi,
Not sure if this is in the right section so admin please feel free to move.
Ive googled my problem and had a bit of a read but dont really get any solutions.
Ive noticed a serious battery drain since upgrading to 6.0.1 - maybe it happened on the previous version however ive just seemed to have noticed it more since i did the update.
My battery doesnt last very long. It will show 100% in the morning. If i dont use it, it can go down to about 80% within an hour or so. If i do use it then im using apps like gmail, whatsapp / sms, short phone calls, some other apps but im not on them for very long. I normally close all apps that are running in the background.
This morning it was 100%, ive used it as described above and its on 57% and its not even dinner time yet...
Ive checked the battery usage and top of the list is " Cell standby" with 48% usage showing power used is 1530mah - which is alot. The next is "my data manager" (an app to manage data usage) showing power used is 485mah (alot less!). Ive attached a screen shot.
Ive also noticed that once the battery gets to around 30% it drains even faster. I find myself using power saving mode when it gets to about 20%. It still seems to drain at a similar rate. Maybe slightly slower.
Any ideas on what i can do to recover battery time without buying a new battery. There seems to be a few topics online relating to battery drain when updating to the latest android version.
Thanks
Click to expand...
Click to collapse
Factory reset might help a lot.

Dont really wanna have to do a factory reset if i can help it.
I forgot to mention i also cleared the cache in boot mode

Dowsett said:
Dont really wanna have to do a factory reset if i can help it.
I forgot to mention i also cleared the cache in boot mode
Click to expand...
Click to collapse
I had same battery drain issues when i updated from lollipop to Marshmallow but after doing factory reset everything is better then lollipop and doze feature in 6.0.1 works very well. I leave my phone at night about 9 hours and not drain even 2% battery and i got 5 hours scrern on time .
try factory reset+wipe cache from recovery and use atleast 3 days to doze feature work properly.if you have same drain issue then it's a bad battery.this is the only solution so far.

Battery pull?
Sent from my LG-H918 using Tapatalk

Standby drain 8.1 OPM1

I seem to be losing between 8-10% overnight since clean flashing OPM1. Anyone else seeing this? I can't peg it on a particular app and accubattery reports anywhere from 0.8-1.2% loss with screen off. If I just tap the power button to see accubattery stats, the current drain without going into anything ranges from 54mah to sometimes as high as 150mah. I may try a factory reset to resolve but curious to what others numbers are.

I'm using latest stock 8.1 and find it has the best standby I've ever seen. Either your battery is over year or two and starting to degrade. Or you need to do some spring cleaning when was the last time you backed everything up and wiped internal. You'd be amazed the wonders that does with rogue apps and missfunctioning features after completing wiping and installing fresh copy of stock.

Exodusche said:
I'm using latest stock 8.1 and find it has the best standby I've ever seen. Either your battery is over year or two and starting to degrade. Or you need to do some spring cleaning when was the last time you backed everything up and wiped internal. You'd be amazed the wonders that does with rogue apps and missfunctioning features after completing wiping and installing fresh copy of stock.
Click to expand...
Click to collapse
Just bought a new OEM battery that is reporting 101% capacity so that's not it. Also, clean flashed 8.1 when I loaded it although I restored from my cloud backup. I just factory reset today but honestly, I felt it was worse so I completely blew everything out again, redownloaded 8.1 and flashed again. This time I chose to set up as a new device without using the cloud backup. The only thing I manually backed up and restored was text using a 3rd party app. I am adding my apps back a few at a time but it seems to be a little better as of now but will have to give it a couple days to settle down. Not rooted yet either.

Some are reporting that "mobile data always active" is enabled by default in developer options on 8.1. Have you tried disabling this?

To compare this with op, I got 84% battery health and a drain over night of 4%. Stock 8.1, Nova launcher beta, SuperSU beta, mobile data always active is off. May an app is responsible for your 10% draining ? Any social stuff like fb ???

I turned off mobile data always active and when I clean flashed the second time, I did not put any social media apps on the phone but saw no difference. I ended up putting fb, messenger lite and Instagram back on and they aren't impacting negatively. It's only been 2 days and have only rebooted a couple times.. battery is still reporting 101% capacity. I'll give it a another day or 2 to settle down bc at some points it seems to be very efficient while others it doesn't but that's better than before the 2nd clean flash.

Looking at my accubattery stats, I'm still losing about 1.1% battery per hour with the screen off. I also noticed that so far in the ~7 hours my phone has been off the charger today, it's only been in deep sleep about 51% of the time that the screen has been off. What happened to the built in wakelock detector that was highlighted in https://www.phonearena.com/news/Android-8.1-Oreo-wakelocks-battery-draining-apps_id99715? Does anyone see this actually working or is this yet another "Pixel exclusive". I cannot figure this out so I guess I'll have to download a 3rd party wakelock detector but the reality is, even if I do find the culprit, it's usually not anything that is easily identifiable or fixable. Am I really the only one having this issue??