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Mysterious idle drain

Hello and thanks for reading ,
I am experiencing a very bad tablet battery life since November 2013.In these past month's i have visited forums, flash factory OS,turned off the radio(and wifi), installed many battery saving apps (didn't work), boot safe mode(drain still there), rubbed snake oil(really dangerous) and the battery still drains faster than a monsoon gutter.
Below is a screen shot of the tablet after I left it to idle for one night .
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Any suggestions in solving of the problem are much appreciated and no ,i do not like 4.4.2 cause it breaks my FLAC playback (and still [email protected]% perhour)(currently running 4.3)
Thanks and regards shinra_co

I've got exactly the same problem; battery drains very quick even with airplane mode on. Tablet Idle is the culprit according to the power settings. I wonder what this means and how to solve this issue. can hardly use the tablet, i always need to recharge it.
shinra_co said:
Hello and thanks for reading ,
I am experiencing a very bad tablet battery life since November 2013.In these past month's i have visited forums, flash factory OS,turned off the radio(and wifi), installed many battery saving apps (didn't work), boot safe mode(drain still there), rubbed snake oil(really dangerous) and the battery still drains faster than a monsoon gutter.
Below is a screen shot of the tablet after I left it to idle for one night .
Any suggestions in solving of the problem are much appreciated and no ,i do not like 4.4.2 cause it breaks my FLAC playback (and still [email protected]% perhour)(currently running 4.3)
Thanks and regards shinra_co
Click to expand...
Click to collapse

yves.alexis said:
I've got exactly the same problem; battery drains very quick even with airplane mode on. Tablet Idle is the culprit according to the power settings. I wonder what this means and how to solve this issue. can hardly use the tablet, i always need to recharge it.
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Same here, and this just started a couple of days ago. Usually, with my usage pattern, I only needed to recharge once a week. Just over night this changed to nightly... Quite annoying.

Me too
Newfarm said:
Same here, and this just started a couple of days ago. Usually, with my usage pattern, I only needed to recharge once a week. Just over night this changed to nightly... Quite annoying.
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Registering only to add my "me too" to this problem. The battery is depleted in a few hours (6 to 10) when the tablet is turned off, no sleeping, turned off, even after using the recovery menu option in order to force the power down. It is always lightly hot to the touch when it is automatically discharging, again when turned off.
This is my first Asus device and I am trying to request a refund, I don't want a new device, or a repaired one. I want my money back. I am not sure this will happen because it was bought on December, but this is not tolerable

5 Months in and various updates later (KK 4.4.4 KTU84P right now).
The battery still drain away @ 5.0 per hour minimum.
As per original post, I have still not been able to find the source of the drain.
wakelock detector, better battery stats and battery doctor have been of little help this past months.
Assuming it is not software related, what are the chances it is the hardware ie the battery itself being the culprit.
if so i think i'll wait for the rumored 8" nexus tablet.

[Q] Nexus 4 Battery drain, plz help.

Hi,
This is my first ever post. I'm having nexus 4 from past 1.5 years and very inexperienced user in terms of development stuff. I dont know if my battery is gone n i should buy new one or just the processes running up. Earlier when i used to wake up after 6-7 hours of sleep i could see only 10% max battery drain. But nowadays I have never seen my mobile in 'Switched On' mode after i wake up. It goes from 100% to 0% in 7-8 hours.
When i went to battery to check whats sucking up the battery, its all 'Android OS', 'Screen', 'Cell standby' and 'Google play services'. I dont know how to even root the phone. Please help.. I have also put location settings as 'Off'. Tried Googling and done everything since 10 days.. plz help... Please HELP me..!!

Please help me.. dont just view my post.. PLz... Shall i buy a new battery or a new phone??

mohitgupta208 said:
Please help me.. dont just view my post.. PLz... Shall i buy a new battery or a new phone??
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Factory reset to see if you get a better battery life. 7-8 hours is what i usually normal work day use. With lollipop i get a little bit better. You can send it to LG or buy a battery for the phone.
Sent from my Nexus 4 using Tapatalk

I had exactly the same problem after the OTA update. Google Play Services, Android System & Android OS were all tanking the battery. After 6 hours, with 30 minutes of screen on, the battery was down to 54%.
A factory reset had no effect. Neither did a complete wipe and install with the factory image. I went back to KitKat and now the battery use is how it used to be.
Sorry, but all I can suggest is try going back to 4.4.4 and if the battery is fine it obviously doesn't need replacing.

Somethign similar happens to my Nexus 4 with Lollipop. The battery drains while the movile is off!!
I turn movile off at night with 99% of battery and when i turn it on in the morning it shows only 1% of battery remaining.
The battery history shows that the wifi is active while the movile is off!!!
Here is the screenshot. Dunno what to do with that problem.
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Hey.. This was actually started from October with 4.4.4 only.. And i thought lollipop would fix all the problems. So i think there's no point in going back to 4.4.4. Please see the attachment and see.. I don't know where they have mentioned rest of the battery

Those are strange Battery stats. I've never seen anything like that. It doesn't show anything.
If 4.4.4 was no good, you could try going back to the last version that was good.

Reasearch on LP idle battery drain

Premise:
idle battery drain in LP is much worse than in KK (1% per 1 hour vs. 3 hours.)
Personal experience : after disabling most of background apps in both OS's, the battery drain in LP is about 1% per hour, while it was 1% per 3 hours in KK.
New information:
I did a new test. I restarted the phone and charged it full. I then left it idle for about 6 hours.
Here are the results after 6 hours of a charged idle phone.
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Conclusions:
1) The constant wakelocks in idle state are due to S-Health app. They are not responsible for the battery drain.
2) Cleanly after restart, the phone drains the battery in idle mode at a rate of 1% per 3 hours, even in LP.
3) Something else is responsible for draining the battery at 3x the rate (of 1% per 1 hour.) This new culprit is only introduced on using the phone for a while.
I will continue testing this.
Any new ideas are appreciated.

The single biggest reason that I miss root is to figure out wakelocks on these things.

usmaak said:
The single biggest reason that I miss root is to figure out wakelocks on these things.
Click to expand...
Click to collapse
Someone posted a way to get Wakelock Detector working w/o root:
1) Connect phone to usb.
2) Do "adb devices" then do "adb tcpip 5555"
3) Open Terminal Emulator and do "adb kill-server" and "adb devices"
4) At this point, Wakelock Detector works.

Thanks for that info. I'll have to give that a try.

usmaak said:
The single biggest reason that I miss root is to figure out wakelocks on these things.
Click to expand...
Click to collapse
You can use wakelock detector without root, over usb adb
Sent from my SM-N910V using Tapatalk

I have been seeing the same awake vs screen on behaviour, my fiance isn't seeing that trend as much and her battery life is better. I'm not complaining much about mine, but it could be better. I've tried clearing cache, battery pull, uninstalling apps, and changing sync settings.

Android Central published an article about the bad battery life on the S6. Samsung just updated the push service that affects the S6, S5 and Note series. Might be worth looking into.
http://www.androidcentral.com/galaxy-s6-battery-life-bad-update-might-help

I got wakelock detector set up with the instructions in this thread. It sort of works. It shows no Kernel wakelocks, and I think that it's very unlikely that my phone has had no Kernel wakelocks in the last 18 hours.

Yes I have been tracking this Note 4 with WLD for a couple months now and I haven't been able to pinpoit the issue of battery/wakelocks. It seems to be something very fundamental inside android itself. My wife's Note 3 absolutely does not have these problems. She can get 8 hours of screen time in a day. I am lucky to hit 4

Battery loss over night

Aloah!
I bought the S7 Edge and used it in stock version. Then I noticed that the battery loses over 10% per night. So I decided to install the Superman ROM with root and deactivated some Samsung Features. But the phone still looses over 10% per night.
I have disabled WLAN, BT and GPS. The only activated feature is the always-on-display, but this could not be the problem, because of AMOLED. I know that Samsung bloates their phones with useless things and I only recognize this battery problem (mostly) on Samsung phones. So I think the battery loss must have to do something with the Samsung features.
So my questions are these two:
1. How can I find the battery-using processes?
2. Is there a near-stock-android ROM which is fully debloated? On the S5 the stock ROM had 1,5 GB and then I installed one which has only 400 MB. So there was much Samsung trash removed.
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since you are rooted start by installing either Wakelock Detector or BetterBatteryStats app and see the output of those in the morning.
also is it a used or new phone? if its used then the battery might be faulty.
also try 1 night with AOD off and see if that gets rid of the issue.

Its a brand new phone. Ok, I try these two apps.
But what is AOD?

Rookie1919 said:
Its a brand new phone. Ok, I try these two apps.
But what is AOD?
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Always On Display :: AOD

Does this really take that much battery? I mean, its mostly black and that doenst consume battery (mostly).

Rookie1919 said:
Does this really take that much battery? I mean, its mostly black and that doenst consume battery (mostly).
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Id bet thats where most of your drain is coming from. Im just going by what I recall, but believe AOD accounts for 1 to 2% per hour.
I like having the AOD at night so I keep it on regardless since Im pretty much able to charge my phone at work or in the car, its not a big deal.

Ok, I deactivated the AOD but still got around 7% loss.

Battery draining/Loss of battery

Hi, I've got a problem with my P9Lite for a few days now.
Over night the battery decreases from 23% to 2%, but there are no apps running. This happens always somewhere around 30%, then the battery drops by 15-20%.
In the second screenshot you can see the batterymanager, it seems like the phone is completely shut down but it was always on.
The battery was new, the old battery now has the same problem.
Has anyone an idea?
Thank you?

AlPai said:
Hi, I've got a problem with my P9Lite for a few days now.
Over night the battery decreases from 23% to 2%, but there are no apps running. This happens always somewhere around 30%, then the battery drops by 15-20%.
In the second screenshot you can see the batterymanager, it seems like the phone is completely shut down but it was always on.
The battery was new, the old battery now has the same problem.
Has anyone an idea?
Thank you?
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hi, please tap red circle in second screenshot.

RyotaGamer said:
hi, please tap red circle in second screenshot.
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Hi,
I've been on holidays for a few days and now I'm back.
Here's a screenshot from the time where the battery life decreases.
The battery had about 13% when I laid it aside, in the morning the phone was dead.
When rebooting I saw that the battery continuously decreased. WLAN was off, it just laid on the table.
Is it really the facebook app causing this drain with less than 1mAh?
Thank yoU!

AlPai said:
Hi,
I've been on holidays for a few days and now I'm back.
Here's a screenshot from the time where the battery life decreases.
The battery had about 13% when I laid it aside, in the morning the phone was dead.
When rebooting I saw that the battery continuously decreased. WLAN was off, it just laid on the table.
Is it really the facebook app causing this drain with less than 1mAh?
Thank yoU!
Click to expand...
Click to collapse
ok,check this.
kill all apps from recent screen.
clear cache from recovery mode.

Ok, I have blocked the apps and set them as "close when phone is in standby".
I will keep you updated.
Thanks

AlPai said:
Ok, I have blocked the apps and set them as "close when phone is in standby".
I will keep you updated.
Thanks
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So now after about 1 month the problem seems to be gone. I don't know why I had to force closing apps but it worked.
Thank's for your help!!