Database Users

Android OS draining battery?

Well my nexus has been giving me 5 hours SOT for the longest time, but just randomly, it decided to start dying really fast. I checked battery stats, and sure enough, android OS is the killer here. I'm aware android OS drains are usually because of apps installed, but I haven't installed anything new or suspicious any time recently. I even did a full wipe and reinstalled the rom I'm running.
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Are any of these apps known battery drainers?
Here's my battery shots.
Anyone know how to troubleshoot which apps are killing my system? I'm running CM 4/22/13 and franco.kernel r127 if that makes any difference.
Thanks guys!

If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app

Eddy130306 said:
If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Updated OP

Eddy130306 said:
If your phone has been on standby for that long then obviously androidos will be up there since nothing else has been working your battery. Post the pics so I can clarify this.
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.

ingenious247 said:
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.
Click to expand...
Click to collapse
Pretty much my scenario

android os thing happened to me, i think for me it was because it was trying really hard to connect and stay connected to the bad wifi at my school, turned off wifi and the drain stopped. not sure about ur situation though

http://forum.xda-developers.com/showthread.php?t=1179809
This might just help you out. It'll show you any partial and kernel wakelocks and which processes are causing it.
I had this problem a while ago, so I did a clean install of my rom and apps and the problem was gone. If you can pinpoint the app that's causing your phone to stay awake, you can avoid having to do what I did xD

Really weird... this has been happening to me too, but not as drastic as yours (still a good chunk)
I just reflashed my ROM just in case that was the problem.
Also when I used better battery stats to see what's going on, all it showed me was the power manager thingy. Which showed me nothing.
Sent from my Nexus 4 using Tapatalk 2

kyokeun1234 said:
Really weird... this has been happening to me too, but not as drastic as yours (still a good chunk)
I just reflashed my ROM just in case that was the problem.
Also when I used better battery stats to see what's going on, all it showed me was the power manager thingy. Which showed me nothing.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
That's all it ever shows when it comes to Google services jacking up the phone. Kind of convenient for Google since we can't pin down/point blame for the issue
Sent from my Nexus 4 using xda premium

Turning off WiFi when idle at school seems to have helped. I did notice that when I got to my house it seems the battery drain is more normal. Maybe it really is because the WiFi is just slow.
Sent from my Nexus 4

ingenious247 said:
Nah because when it happened (at least for me) the battery drain was sudden and drastic.
All day Screen was at the top, then all of the sudden in the evening Android OS went from 15% to 74% in about 15 minutes.
Click to expand...
Click to collapse
did you ever solve this problem? or find out what caused it?

I had a similar issue. My phone would not deep sleep. Yet things would work fine when I wasn't on WiFi. A reboot of my WiFi router fixed it.
Sent from my Nexus 4 using Tapatalk 4 Beta

I got the same problem here with my I9305 after updated to 4.3
It has a bit improvement after I disabled the ALWAYS WIFI SCANNING, and sync

[SOLVED!!]
i have this problem with my galaxy grand phone ,the battery discharges in 20hr , default OS was 4.1.2 official samsung , i changed my rom into a slim custom rom based 4.2.2 , but the battery has same problem again , Android OS battery Usage Was 80% !!!! and screen usage just was 9% !
my installed software :
Viber
WeChat
MyKet {Like Android Market}
Weather Widget
i used wifi 1-2 hour in a day ,
=================================
[SOLVE]
first go to Settings -> Developer Options -> Apps Tab -> checked Don't keep activities
set brightness to auto
then go to location services -> off access my location
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
now go to application manager -> Running Tab -> Force stop some apps with extra ram usage like settings
my phone just uses 5% battery in 13hr sleep mode ; ENJOY!

ohhacker said:
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
Click to expand...
Click to collapse
I think if you only do this you will solve the problem.
At least for me my only problem with "Android OS" is when sleeping my phone and having "keep wi-fi on during sleep -> Always".
I have franco kernel and cannot check the kernel wakelocks but I test some days with CM kernel and didn't see any kernel wakelock that consumes too much battery... but maybe some of you have this problem: http://hardforum.com/showthread.php?p=1039838404

Wow, what a surprise... I solve my own problem with my last reply xD
I mean, when I installed CM months ago I select "keep wi-fi on during sleep -> Always" because I thought that if I don't do this I will not receive any notification. The fact is that when putting "Never" Android OS was CPU active mostly the 80-90% of time my phone was sleeping and Wifi ON and now with "Always" (or when plugged) has CPU active like 20-30%... AND I receive notifications also.
Probably when downloading a large data If I put my phone to sleep It will stop download, I didn't try.
One thing I don't understand is that when sleeping it doesn't use mobile data (as it says "Increases data usage"), even I have data and wifi on.
So, if I get notifications in both options ("Never" and "Always") and I get less battery drain with "Never" I prefer "Never".

mierda1 said:
Wow, what a surprise... I solve my own problem with my last reply xD
I mean, when I installed CM months ago I select "keep wi-fi on during sleep -> Always" because I thought that if I don't do this I will not receive any notification. The fact is that when putting "Never" Android OS was CPU active mostly the 80-90% of time my phone was sleeping and Wifi ON and now with "Always" (or when plugged) has CPU active like 20-30%... AND I receive notifications also.
Probably when downloading a large data If I put my phone to sleep It will stop download, I didn't try.
One thing I don't understand is that when sleeping it doesn't use mobile data (as it says "Increases data usage"), even I have data and wifi on.
So, if I get notifications in both options ("Never" and "Always") and I get less battery drain with "Never" I prefer "Never".
Click to expand...
Click to collapse
You say you receive notifications even with the "never" option, but are you sure its not using your cellular data connection instead?

I've experienced similar problem with GS4 after 4.3 update
I've experienced similar problem with GS4 after 4.3 update
There is a bug in google backup service, google backup service acquires wfii connectivity lock and does not release it for hours which prevents device entering deep sleep and as a result drains battery. Fortunately you can disable backup in Settings->Accounts->Backup and Reset-> uncheck 'Backup my data'. This should resolve the issue ... after a full recharge monitor your battery stats - Android OS should NOT be on the top.
Click to expand...
Click to collapse
Sorry disabling backup didn't help - encountered the same problem. There is indeed a bug that some OS module that holds a wlan lock but it's not a backup service. I suspect that full charge triggers this flow. Device restart will temporarily fix the issue. I'll post if i will find the causer, sorry for mislead.
Download this application it will resolve the problem till google fix it. h_t_t_p://kvant.store.aptoide.com/app/market/com.kvant_hv.BatteryLeakResolver/7/4579526/Battery%20Leak%20Resolver%20(OS%204.3)

Android System Battery Drain

Anyone else experiencing a battery drain ~ 28% Android System usage and 23% screen on time (~4.25 hours) with 20% battery remaining. Any solution to this? Probably a wake lock?

Yes battery drain alot
The only solution work for me is turn on upower saving
If you have rooted u cant disable wakeclock service. You can find in forum
Cheer

I disabled the s health app which has helped, still seeing around 20% usage from android system though.

I bet that you have Dropbox sync on. I am not talking about uploading new pictures to Dropbox automatically, I am talking about ur phone downloading all your preexisting pictures from Dropbox. This stupid feature is on by default and killed my battery until it was done syncing. I have since switched off this stupid option. It shows up as android system drain because it actually unrelated to the Dropbox app. It's your gallery app that's doing all the downloading.
Sent from my SM-N910C using XDA Free mobile app

Good results with "normal" use
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honhan0904 said:
Yes battery drain alot
The only solution work for me is turn on upower saving
If you have rooted u cant disable wakeclock service. You can find in forum
Cheer
Click to expand...
Click to collapse
I'm not rooted unfortunately. That really sucks that's there's a wake lock issue... haha I'm tired of having that issue on my Android phones...
huntleth said:
I disabled the s health app which has helped, still seeing around 20% usage from android system though.
Click to expand...
Click to collapse
Cool, I'll give that a shot.
ozaghloul said:
I bet that you have Dropbox sync on. I am not talking about uploading new pictures to Dropbox automatically, I am talking about ur phone downloading all your preexisting pictures from Dropbox. This stupid feature is on by default and killed my battery until it was done syncing. I have since switched off this stupid option. It shows up as android system drain because it actually unrelated to the Dropbox app. It's your gallery app that's doing all the downloading.
Sent from my SM-N910C using XDA Free mobile app
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Click to collapse
Interesting... I do that have on, but I would think it be done downloading now. I have my Note 4 for ~ 3 days now and I have a fairly fast internet connection.

Anyone still using Greenify out there?

on my device disabling location reporting seemed to help a lot with the Android system battery drain

I use DU Battery Saver to turn off all apps and network when screen is off.. also, you can disable apps from running in the background when the screen is off too.. I don't have the screenshot, but I got about 21 hours with 5 hours display using this method.. I'm also getting a 4500mah battery too.. so hopefully that helps.. Also, I tried going into 'ART' mode and found out that the DU Battery Saver Widget went up by 2-3 hours.. so hopefully Lollipop can help extend the battery too.. I found out that under 'Location' in the Settings you can use 'Power savings Mode' for the GPS, and also turn off the Google Reporting and Location (on the bottom)..

I got my phone two weeks ago but i just started having this problem yesterday. I went to turn off location reporting and under recent location request, i saw Unified Daemon and it had high usage. Prior to having this problem Unified Daemon was not in the list. Could this be what's causing my problem?
Edit: I hit force stop and turn off and its now out of the list. I'm going to keep watching it to see if this fixed the problem.
Sent from my SM-N910T using XDA Free mobile app

I'm on n910c, Battery life is quite bad the same as on my 2 year old note 2. I guess only root can help...

On mine, I get an average of 50% deep sleep and 50% at 300mhz with "msm_hsic_host" as the main culprit.
Weird. Monitoring my apps, none of them use wakelock more than seconds per hours.

gqman69 said:
On mine, I get an average of 50% deep sleep and 50% at 300mhz with "msm_hsic_host" as the main culprit.
Weird. Monitoring my apps, none of them use wakelock more than seconds per hours.
Click to expand...
Click to collapse
Kinda strange - I get 80% deep sleep.

are you referring to the "device idle"? haha, thanks, so I can do a comparison too..
pedmond said:
Kinda strange - I get 80% deep sleep.
Click to expand...
Click to collapse

I got rid of my battery drain by disabling Unified Daemon.
Sent from my SM-N910T using XDA Free mobile app

michsu said:
are you referring to the "device idle"? haha, thanks, so I can do a comparison too..
Click to expand...
Click to collapse
No, I'm talking about Deep Sleep as measured by CPU Spy

scoobrel said:
I got rid of my battery drain by disabling Unified Daemon.
Sent from my SM-N910T using XDA Free mobile app
Click to expand...
Click to collapse
What does he do, the daemon?

ok well, unified daemon was a problem but less than this msm_hsic_host wakelock thing.
well, resetting the apnand made the wakelock go away...
weird but now i get 80% deep sleep and battery drain looks normal now.

Vangelis13 said:
What does he do, the daemon?
Click to expand...
Click to collapse
I saw somewhere that it has to do with weather and news updates and since disabling it my weather widget is asking me to tap to add a city.
Sent from my SM-N910T using XDA Free mobile app

Im getting a ~10% drain overnight (about 6-8 hours) from deep sleep. ?
worse than my note 2. Cba to root though

Moto X 1st Gen Battery issue.

I've been experiencing serious battery drain lately.
Lasts around 6 hours tops.
Check out the stats. Anyone know how to prevent this?
Drain is almost 3:40 min / 1% discharge. 
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Check if your phone turns off the display after the display timeout. I have seen this happen in Moto X sometimes.. It just stays awake. Restart fixes it.
How about brightness? Set it in Auto Brightness mode. Check your Settings->Display page and check all the fields. Apart from that Screen taking 38% is surprising.
rishi.gohil said:
I've been experiencing serious battery drain lately.
Lasts around 6 hours tops.
Check out the stats. Anyone know how to prevent this?
Drain is almost 3:40 min / 1% discharge. 
Click to expand...
Click to collapse

I've been having the same problem. I updated a bunch of apps yesterday, (mostly Google apps) and it the battery seems to be better today. It may be too early to tell, but I'm hoping it was one of the Google apps that draining the battery and that it was corrected with the update.

Glad to see I'm not the only one who's battery suddenly got a lot worse. I thought it was Snapchat since I had started using it recently, but the battery usage page doesn't reflect that.

One thing to check is the awake time. If you notice that your device seems to be awake all the time, I'm willing to bet that it has to do with google play services.
If rooted, there is an easy fix via gservices app on market.
Sent from my Moto X using XDA Free mobile app

I'm having the same issue. Really only getting about an hour of screen time these days. When I first got the phone it was 2+ hours. Mostly use WiFi vs cellular for data, which I thought should be more battery friendly. I make sure I don't have apps running... I'm thinking maybe my battery has just been getting weaker over time.
Here's a good read on battery wear http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
If you charge once a day like everyone the battery decreases by 15% after a year.

soxfan37 said:
I've been having the same problem. I updated a bunch of apps yesterday, (mostly Google apps) and it the battery seems to be better today. It may be too early to tell, but I'm hoping it was one of the Google apps that draining the battery and that it was corrected with the update.
Click to expand...
Click to collapse
I downloaded the gapps fixer from the Play Store but after installing it and rebooting I could no longer send e-mails via the gmail app (clicking the "send" icon would do nothing)

guruzen said:
Check if your phone turns off the display after the display timeout. I have seen this happen in Moto X sometimes.. It just stays awake. Restart fixes it.
How about brightness? Set it in Auto Brightness mode. Check your Settings->Display page and check all the fields. Apart from that Screen taking 38% is surprising.
Click to expand...
Click to collapse
Brightness is already set to auto. Also, I've check the settings and display page. Its as it should. I wiped out cache partition and it improved a little. Though I didn't saw significant change by doing that. It still runs for max 6-7 hours. That's it.

have you tried to clean battery stats from recovery?

eldar4uk said:
have you tried to clean battery stats from recovery?
Click to expand...
Click to collapse
Doesn't actually do anything. People need to stop facilitating this dumb myth.
Google said:
This file [batterystats.bin] is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings. That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you. It has no impact on your battery life.
Click to expand...
Click to collapse

rishi.gohil said:
Brightness is already set to auto. Also, I've check the settings and display page. Its as it should. I wiped out cache partition and it improved a little. Though I didn't saw significant change by doing that. It still runs for max 6-7 hours. That's it.
Click to expand...
Click to collapse
May be u need to calibrate your battery. Try to put the phone in charge and let it reach 100% and post that dont remove the charger for 4-5 hours. This is a method to calibrate. Try this and lets see if it helps.
And, I see that you are in H+.. Try using your phone in 2G for a day and observe the battery patterns.

You should clean battery stats from recovery.. Have you tried this?

Mine will drain fast but then it will sit at 1% for several hours before finally shutting off. I have not found a fix and it's been going on for a few months now.

SmokeyDP said:
Mine will drain fast but then it will sit at 1% for several hours before finally shutting off. I have not found a fix and it's been going on for a few months now.
Click to expand...
Click to collapse
u let the battery die out then recharge to full without switching it on. Once complete boot the phone and when booting is complete then remove the charging cable.

Battery drain

So I unplugged the phone in the middle of the night with 100% charge and woke up with 75% battery the phone is Stock can anyone tell me what is draining my battery.
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Wifi and gps?!
When you sleep turn off everything. Me just drop like 3%

I had WiFi set to always on, just put it back to always on only for the charger, and GPS on high accuracy to battery savings.
Sent from my XT1575 using Tapatalk

Hard to know, my Style seems to have similar idle battery drain issues.
It generally shows high google play services usage so may be a bug on location services or something like that.
I wouldnt recommend turning wifi off though. Maybe try playing around with location settings though.. I havent really looked into it myself yet. Kind of hoping it would fix itself with a play services background update.. might be wishful thinking.

Spiffington said:
Hard to know, my Style seems to have similar idle battery drain issues.
It generally shows high google play services usage so may be a bug on location services or something like that.
I wouldnt recommend turning wifi off though. Maybe try playing around with location settings though.. I havent really looked into it myself yet. Kind of hoping it would fix itself with a play services background update.. might be wishful thinking.
Click to expand...
Click to collapse
Yeah, I just switched from the nexus 6 and it also has Google play services that was high on battery usage.
Sent from my XT1575 using Tapatalk

wifi on lollipop seems to drain battery like crazy. on my tab s, if i leave wifi on overnight and don't put it into airplane mode, this same thing happens. idk wtf google did but they screwedn lollipop up hard
Sent from my XT1575 using Tapatalk

Get better battery stats and find out what wakelocks are causing your drain. I lose only 1% per hour or less after tweaking.
Bangin' on my unlocked/rooted
Moto X Pure

your have no idea.. try factory reset.

My battery experience has been very positive on the MXPE. My usage on idle is less than 1%/hour. After a whole day of normal use yesterday, including occasional phone calls, bluetooth, low-power location on, and about an hour reading on it, the MXPE averaged 1.9%/hour. This is the best battery life I've ever had on a phone.
The biggest battery drains are the WiFi network notification, WiFi scanning always available, both under the Advance WiFi settings, WiFi always left on, using high accuracy GPS all the time, and the myriad of push notifications in apps these days - gmail, yahoo mail, facebook, google+, twitter, google settings, etc. I disable all push notifications in all apps except my work email, and that's on an hourly polling rate, and weather bug, which updates every 30 minutes. It takes a while to drill down through all the various app settings, but the result is well worth it in terms of battery life. Of course, it you want constant push notifications and high accuracy GPS 24/7, then you get what you get.

Anyone else has any tips?
Sent from my XT1575 using Tapatalk

If you're rooted an app like LeanDroid can really help manage connections when idle.
Sent from my XT1572 using Tapatalk

So I disabled WiFi while phone sleeps and the wakelocks are gone also wiped cache in recovery.
Sent from my XT1575 using Tapatalk

Another tip. GPS to device only. And turn off the Google app location BS. The Google stuff drains excessively and device only actually drains less than battery saver lol. Battery saver seems to keep GPS on all the time while device only seems to to only activate GPS when an app pulls it.
P.S. disable the discover card app from polling location cause it does so way to often. Otherwise... Good luck.
Sent from my Nexus 6 using XDA Free mobile app

Andrew149 said:
Yeah, I just switched from the nexus 6 and it also has Google play services that was high on battery usage.
Sent from my XT1575 using Tapatalk
Click to expand...
Click to collapse
Did you guys manage to fix the GPS battery drain?

Overnight battery drain

I have a problem that I noticed some people are experiencing. Overnight idle the phone drains like 25% with wifi off and on battery saver. Is there a known cause for this? My Honor 8 is brand new. Help!
Edit - When I go to sleep -
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After I wake up it's normal again (I turn WiFi on and use phone normally) -
I will try and leave WiFi on during the night today to see if it makes any difference.

Fyi, since I woke up and turned wifi on, the battery has only went down by 1%! Something is not right. How can it drain so much without using it and almost none when I actually use it.
Screenshot from today (from 1pm till 7pm, only lost 2%)
i.imgur.com/xLBcILO.png

Which hardware and firmware version are you using?
Do you have cellular data connected when WiFi is off?
Does the battery graph show constant system awake time during these periods of high drain?

PuffDaddy_d said:
Which hardware and firmware version are you using?
Do you have cellular data connected when WiFi is off?
Does the battery graph show constant system awake time during these periods of high drain?
Click to expand...
Click to collapse
Hi. I'm using FRD-L09 and EMUI 5, build FRD-L09C432B381.
No wifi, no mobile data turned on. All apps closed.
Yesterday I left it at ultra power save when it was at 12%, after I woke up (around 6 hours). it was off. Don't think that's normal either.

Sometimes I have the same problem. Overnight phone drops 25% of the battery.
What I found useful is to turn off Wifi+, Link+ and in GPS location (3 dots -> Search settings -> turn off Searching for Wifi and Bluetooth). In fact that will stops searching for Wifi, while Wifi is toogled off.
It might help you, I think this is Android 7 issue, since most people complains about heavy battery drain when not using the phone. Noone complained when using Android 6.

This isn't normal, but at the same time it is... I don't think any one person has figured out the real reason why, but many of us have had similar battery drain for seemingly no reason. I simply backed up my data and factory reset the phone and haven't had an issue since. Others haven't been so lucky.
Can you take a screen shot of your battery graph so we can see if your system is awake during the drain?

I have update B381 and u have this problem with battery drain for my is very bad battery life update B360 was good for battery life.

I found the high Idle battery usage some what related to the phone keep search for upgrade and the process "android OS" was consuming around 50% all the time.
After set these two setting, it fixed the battery drain and "android OS" only use around 20%. Now it remains 100% battery for 10 hours standby.
1) Setting->System update ->(three dots)->Update Settings->Wifi auto download (Disable)
2) Setting->Battery->(Setting icon on top right)->keep wifi on when sleeping->Never

I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.

Try factory reset and wipe cache. Screenshot tells us that your phone is awake when you are not using it.

Okay, I'll try later tonight and reply tomorrow if anything's changed.
p.s. Any good full backup apps?

Re7r0re7r0 said:
Okay, I'll try later tonight and reply tomorrow if anything's changed.
p.s. Any good full backup apps?
Click to expand...
Click to collapse
Just use the backup tool that was loaded on the phone. It works nearly perfectly to backup all your texts, call log, apps, settings, etc.
---------- Post added at 08:55 AM ---------- Previous post was at 08:52 AM ----------
Re7r0re7r0 said:
I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.
Click to expand...
Click to collapse
Looks like it tried to sleep when you went to bed last night, but something woke it up early in the morning and it never went back to sleep. Find out what that was and you may solve your problem.

If you have data, you still get notifications.
Re7r0re7r0 said:
I did as everyone suggested and turned off auto WiFi and bluetooth search and auto WiFi download of the system updates. If I turn off keep WiFi on during sleep, I don't get any notifications from messaging apps, so I won't do that. I've also only left Messenger, Viber and Whatsapp in the whitelist of programs that will be closed when screen is locked.
Here is the most recent screenshot of the battery usage.
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As a test, I created a Magisk module that freezes all of Huawei's system power management apps and superfluous services. I just loaded it today, so it'll be a few days before I can provide feedback on if it improves battery life.

I backed it all up and am wiping it tonight but I was thinking. Perhaps it's not a good idea to restore the data yet? Maybe I should try a night with stock settings/apps to see if that makes a difference, then restore all and see if there's any difference.

Re7r0re7r0 said:
I backed it all up and am wiping it tonight but I was thinking. Perhaps it's not a good idea to restore the data yet? Maybe I should try a night with stock settings/apps to see if that makes a difference, then restore all and see if there's any difference.
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Honestly, I wouldn't expect that experiment to provide you with any useful info. You will naturally see more battery drain once you have your apps and services running because more will be happening in the background. Reinstall everything and use your device normally to get the most accurate comparison to your previous battery life.

netvorCZEK said:
Try factory reset and wipe cache. Screenshot tells us that your phone is awake when you are not using it.
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Factory reset I know how to do, but how to give the wipe cache?

IIRC, the cache should be wiped automatically when you Factory Reset.

I like to do it manually. Turn off the phone. Hold Vol + and power button.

I wonder how the battery drain overnight will be with the new custom Roms which are out.