Database Users

How to Diagnose Your Battery Drain

Hello everyone, I've already posted this in another thread before, but I keep seeing people having troubles with their drain software wise and figured this information deserves its own thread.
To everyone who thinks their B60 or above dock might be defective (getting drain even with the mobiledock battery saving mode checked on), please read this post. I had originally thought my previous B60 dock was defective because I was getting drain. I never thought there was some rogue app that was killing my battery, because after exchanging it, my new dock was great. This was probably due to myself removing another rogue app, unknowingly. Then my new dock started experiencing some SERIOUS drain (40% overnight when originally below 5%). This post is going to outline how I went through troubleshooting my battery drain. Please don't just resort to the mentality of blaming ASUS for everything and try to troubleshoot your battery drain problems using this post.
After troubleshooting my drain extensively (my dock was great - about 1% an hour, until a couple nights ago), I figured out the culprit was fancy widget. Now I get ~.5% drain/hour on the dock because the tablet goes into deep sleep without any disturbance.
At first I tried freezing the mobile apps with titanium - didn't do the trick for me. Tried uninstalling google maps - still no go. Tried setting every widget (including fancy) to manual refresh. Still nothing. Then I figured out that my torrent widget (transdroid) wasn't connecting to my IP because it was configured wrongly. I had hoped that since that was the case, the drain was because it kept trying to connect. Nope. Tried disabling the GPS location setting in News360 - nothing. I've also tried disabling GPS, bluetooth, google search using location, and pretty much everything in this thread as well as other drain threads in this forum. Still had a ton of drain.
Then, after a factory reset, and installation of select apps, I figured out it was fancy widget, which I installed the other day (consequently, the day the draining started). This is to just clarify to you all that even if all the fixes in this thread, or any other thread does not work for you to stop YOUR specific drain - that does not mean that there is not a rogue app killing or battery, there probably is. So it's your job to find it
Also, to clarify on the touchpad waking the device - it will ONLY wake the tablet when the tablet is AWAKE. If the tablet is in DEEP SLEEP, then the touchpad WILL NOT wake it up. Originally I had thought that the touchpad waking the device on my previous dock was the problem, and that the dock was defective. This was not the case. In retrospect, this was because my tablet wasn't going into deep sleep. I had a hunch that the touchpad waking the device was related to deep sleep after some time, and verified it using cpu spy. Now, the useful thing about this bit of information is that you can actually use it to your advantage, much like I did. Troubleshoot your own battery drains by configuring your widgets/uninstalling certain apps, then pressing the power button on the TF while leaving it docked. After 5-10 minutes, swipe around the touchpad and if it wakes up, then your tablet is not getting into deep sleep. If it doesn't, then your tablet is. HOWEVER - this is not the end of your troubleshooting here. Even if it doesn't wake up after 5-10 minutes, it does not mean it won't wake up after a more extensive time period, say 8 hours (overnight). So use cpu spy in conjunction to the touchpad waking feature to see whether or not your tablet goes into deep sleep.
Attached are pictures of system apps I have frozen (some not to solve drain) and consequently work in leaving my tablet in undisturbed deep sleep. Note, some of these system apps I froze just because I don't use them. The most notable freezing I did was market updater 1.0. I started getting drain after updating to the late 3.1 update, and started troubleshooting my drain again and why I would not be getting into deep sleep. I found that market updater 1.0 was the cause. Don't worry, this doesn't break updates for your apps - I believe it just constantly checks for an update to the market. You can defrost it when there's an update for the market.
Exchange services probably doesn't have to be frozen - I just never use it. Same goes with Movie Studio, Market Feedback Agent, and the widgets. I'm just showing my current setup which has solved my drain for ME. So use it as a guideline to fixing yours.
Also, to add on the exactly how much my dock is losing in standby - I lose barely anything overnight with wifi set to turn off when screen is off. Maybe 2-3% over an 8 hour period on the dock. When wifi is set to on always, then I lose about .75-1% an hour. This will probably vary for you, but keep in mind that wifi set to off when screen is off is the best option if you want the most battery. I have all location settings unchecked except for "Use wireless networks - Location determined by Wifi". Bluetooth is off.
Sorry for the long post, but I spent 4-5 days infuriating myself over this deep sleep problem. I figured those who read this won't have to go through the pains I did. Good luck on solving the drain guys!
In summary:
Freeze - mobile apps, market updater
Uninstall - Google Maps, Street View
Check Settings>Applications>Development and keep stay awake when charging unchecked
Check location settings - uncheck all but first option (wifi for location)
Also, if you don't use any of these system apps - I suggest freezing them if not just the sake of getting rid of bloatware.
If none of this above works, then you must troubleshoot using the steps I wrote above (possibly factory reset, and select installation to figure out which app is keeping your tablet awake).
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Good post.
A question to you,what would happen if you just disconnect the dock when you don't need it(like night) and keep it seperate? This should keep it in Deep sleep as well right?

RAMBO29 said:
Good post.
A question to you,what would happen if you just disconnect the dock when you don't need it(like night) and keep it seperate? This should keep it in Deep sleep as well right?
Click to expand...
Click to collapse
Your tablet can be kept awake by rogue apps/settings when undocked as well. Drain is just more noticeable when docked because dock drains faster than tablet (smaller battery).

ri3tn said:
Your tablet can be kept awake by rogue apps/settings when undocked as well. Drain is just more noticeable when docked because dock drains faster than tablet (smaller battery).
Click to expand...
Click to collapse
Small nit. The battery ratings are the same. The difference is the loss due to using the dock battery to charge the tablet battery instead of just powering the tablet from the dock battery. The charging ensures that tablet is topped off when you disconnect it but takes a toll in dock battery life.

jerrykur said:
Small nit. The battery ratings are the same. The difference is the loss due to using the dock battery to charge the tablet battery instead of just powering the tablet from the dock battery. The charging ensures that tablet is topped off when you disconnect it but takes a toll in dock battery life.
Click to expand...
Click to collapse
Hmm I thought it also had to do with the battery in the dock being 3300 mah while the tablet is at 6600 mah. But thanks for the clarification.

About to charge this for the second time today, only been on battery for 5 hours 10 mins and down to 10% already.
Brightness up full, WiFi on all day, playing games, browsing, market etc
I thought these things could play a video on loop for 8h 30mins.. doubt it.
What they mean is if you turn everything off, and the screen down to the lowest setting, then maybe.
False advertising. I wish companies would give real world usage statistics, not sitting in a pitch black room wearing headphones usages.

Battery drain by baseband_xmm_power

Anyone ever see this problem before? I got a watchdog notification alert from BetterBatteryStats that something had kept my Nexus 7 100% awake when its screen was off.
I fired up BetterBatteryStats and it showed a kernel wakelock (not caused by an installed app) by something called baseband_xmm_power.
I'm not getting it all the time. I wonder based on the name if this might be another 4.2 bug caused by a problem in their drivers for the Nexus 7 3G.
Searching online, it seems like this is related to Tegra.
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I have the same problem. The funny thing is that the problem gets worse when I turn airplane mode on. I'm using a bone stock 3g model.

Hi OP,
I have the same problem as you. N7 3G.
BetterBatteryStats also shows me that I am 100% awake throughout the night. 100% of the time in baseband_xmm_power wakelock
I have tried a few combinations to see the effect.
1. Turn to airplane mode (no use)
2. Use only 2G (no use)
3. Use only 2G-no data enabled (no use)
4. Turn to airplane mode then reboot my N7 (tried this morning and I manage to get the tablet to "Deep Sleep")
I will still need a few more tries to make sure that point 4 really works. My battery is draining very quickly ~20% per 10 hours when the baseband symptoms occur.

Man, this is annoying. I thought that going stock Nexus was going to get me away from the wonkiness of bad kernel drivers causing wake locks and random reboots.
Anyone know if there is any sort of procedure to report bugs in a Nexus device to Google? Would we just submit issues to the AOSP issue tracker?

I have confirmed point 4 works for me, ie put to airplane mode then reset the tablet. I will not get the baseband symotoms. OP maybe you can try this work around while waiting for any patches.

I am having the same issue with my N7 3G. Seems to happen at random but something must be triggering it. I have just gone over two days since the last reboot with lots of deep sleep and then last night the baseband_xmm_power wakelock reared its ugly head again.
Do Google/Asus have a website where such issues can be reported and/or tracked?
Is it possible to capture the output of the pr_debug() calls without recompiling baseband-xmm-powerbase.c into a new kernel or rooting my N7?

ronime said:
I am having the same issue with my N7 3G. Seems to happen at random but something must be triggering it. I have just gone over two days since the last reboot with lots of deep sleep and then last night the baseband_xmm_power wakelock reared its ugly head again.
Do Google/Asus have a website where such issues can be reported and/or tracked?
Click to expand...
Click to collapse
+1 !!!
very annoying. also occurs with different kernels

At the risk of tempting fate, I may have this under control now.
Since I disabled automatic network connection baseband_xmm_power usage has been minimal. Heading for 7 hours screen time and almost 3 days of standby since the last recharge. Fingers crossed ...

you mean under mobile networks > network operators?
the problem is, i get the drain even on airplane mode ...

nuumuun said:
you mean under mobile networks > network operators?
the problem is, i get the drain even on airplane mode ...
Click to expand...
Click to collapse
Yes, that's the one.
I couldn't understand why the baseband was using power in aeroplane mode either, but I am definitely using aeroplane mode when I am not using the tablet for any length of time. I keep it at the side of my bed at night and unless I use aeroplane mode or remember to turn the sound down it wakes me up when sync notifications occur.
For some reason the reception for my cellphone network is variable near my home, even though I can see the cell towers from my bedroom window.
Latest BetterBatteryStats report says baseband_xmm_power has been used for 20m 31s out of 2d 17h 13m of uptime since the last full charge and CPU Spy reports 59:19:20 in Deep Sleep state out of a total state time of 65:08:35.

ok, i have selected the network manually. let's see how it goes
fingers crossed.

ronime said:
At the risk of tempting fate, I may have this under control now.
Since I disabled automatic network connection baseband_xmm_power usage has been minimal. Heading for 7 hours screen time and almost 3 days of standby since the last recharge. Fingers crossed ...
Click to expand...
Click to collapse
I also get this drain on my 3G model, which I primarily use in Airplane Mode, with WiFi enabled. Was draining the battery at 2% per hour the other day without me even turning the screen on.
I haven't put a SIM Card in my 3G model yet, but because I am using it without a SIM card, I am not able to select either Auto or a Manual network, because I am unable to register on a network.
Any other suggestions?

seems to be working so far. no excessive drain since changing mobile network selection to manual. will report once more after the weekend.

Please update on the progress of this.
This is by far my biggest battery drainer.

hiluke said:
I also get this drain on my 3G model, which I primarily use in Airplane Mode, with WiFi enabled. Was draining the battery at 2% per hour the other day without me even turning the screen on.
I haven't put a SIM Card in my 3G model yet, but because I am using it without a SIM card, I am not able to select either Auto or a Manual network, because I am unable to register on a network.
Any other suggestions?
Click to expand...
Click to collapse
I'm on the same set up as you. Same problem. It doesn't happen all the time, but most of the time. I get this wake lock representing around 90% of total up time with screen off not doing anything. CPU seems to be running at 51mhz more often than deep sleep.
I don't want to get a Sim card just to fix this! Is it worth contacting Google, do you think?

I have the same problem with baseband_xmm_power killing my battery.
Last night I removed SIM and put it in airplane mode. Over the course of 8h screen off time, baseband_xmm_power was active for 7h 46m!
In reply to the above post, getting a SIM won't fix this. I have similar results with the SIM inserted.

no excessive drain on my side since changing to manual mobile network select
running paranoid android 2.99-9.5

nuumuun said:
no excessive drain on my side since changing to manual mobile network select
running paranoid android 2.99-9.5
Click to expand...
Click to collapse
Thanks for these screenshots. I've tried that but it didn't help at all on my device. I wonder if it could be caused by the poor mobile signal which keeps dropping out. But switching to airplane mode (& rebooting) is also ineffective at reducing baseband_xmm_power kernel wakelock.
Just one question — when you say you 'changed to manual mobile network selection', I presume you mean that you allow the scan for network operators to complete, then just manually tap on your operator (3 UK, in my case), rather than tapping on 'Choose automatically/Automatically choose preferred network'. I'm worried that I might be missing something really obvious!
(Btw, also running paranoid android 2.99-9.5)

just that. tapping the operator.
i mostly just use the tablet in airplane mode with wifi. still had the drain before switching to manual select. will try and switch back to auto so i can confirm this was the root cause.

confirmed auto network selection as the cause for high baseband_xmm_power battery drain. at least on my n7 3g.
changed back to manual and it's gone again

wake time longer than screen on time

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

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

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

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

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

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

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

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

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

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

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

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

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.

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.
Click to expand...
Click to collapse

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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.