yashsingh1/xdaforums huggingface dataset:
[Xiaomi Mi 9 Real Life Review] drc007:
Fantastic. Some tips to do that?
[Xiaomi Mi 9 Real Life Review] hardtheory:
There was a post where was posted all optimization can be done but it has been deleted. Screen on time depend also of the usage, maybe you will never reach what other done beccause you don't use your phone like other

---------- Post added at 09:45 AM ---------- Previous post was at 09:23 AM ----------

Same here, I have made a post for this. The phone came hot and battery drain extremely fast. Saw in bbs kernel wakelock called 1-0028 that burn battery. Suspect wifi at office
[Xiaomi Mi 9 Real Life Review] doggydog2:
Still didn't identify what's causing the standby drain so i'm deleting more and more xiaomi stuff from /system/app and /system/priv-app. Making snapshots of phone status, temperature, frequencies and cpu use. Frequencies are very high during standby. Nothing extreme found in processes. During the last night, got .8%/hr in first hour (which is the value i want to achieve) and then again 2.5%/hr drain in standby.

SOT is different.. It's still excellent. 6.66%/hr is fantastic for web browsing. It can probably do 12hours easily in dark.
[Xiaomi Mi 9 Real Life Review] drc007:
Terrible standby time here too. "Cell standby" is with about 25% of battery drain. Tried different settings of LTE signal.

I'm in Brazil with EEA version.
[Xiaomi Mi 9 Real Life Review] bartosz.wapniews:
Something is wrong for sure. My cell standby went out 2% down during whole night

Wysłane z mojego MI 9 przy użyciu Tapatalka
[Xiaomi Mi 9 Real Life Review] Potato997:
Over 2 days, a little but more than 48 hours. 6+ hours of sot

Definitely good.
[Xiaomi Mi 9 Real Life Review] tomsag:
After installing the new MIUI (.17 version) it is much better. No draining anymore.
[Xiaomi Mi 9 Real Life Review] S.AMU:
Is this the GSI Rom?

Gesendet von meinem MI 9 mit Tapatalk
[Xiaomi Mi 9 Real Life Review] Potato997:
Yes
[Xiaomi Mi 9 Real Life Review] EK0PS:
Almost 80% this morning played pokemon go this afternoon I don't know what to think..

13hours Sot 3 hours of pokemon go

Android 20% 9h15 of cpu usage..
[Xiaomi Mi 9 Real Life Review] isttret:
I m worried for my battery life on the mi 9 but now I see I m not the worst one IDK if this is normal or what but I m pretty used to good battery life J700<A720f<PocoF1>mi9 I will let here some screenshots with just one charge and almost in all with battery saver on and you can tell me if is normal or what...

---------- Post added at 07:50 AM ---------- Previous post was at 07:41 AM ----------

There are the captures...

[IMG="battery1"]https://ibb.co/x7PtYCT[/IMG][IMG="Battery2"]https://ibb.co/QJZhhBW[/IMG][IMG="Battery3"]https://ibb.co/5nyhpdc[/IMG][IMG="Battery4"]https://ibb.co/8Bbn3fq[/IMG]
[Xiaomi Mi 9 Real Life Review] psykoly:
Just fine

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] malassalam:
7h30min soc on xiaomi.eu 9.4.18
[Xiaomi Mi 9 Real Life Review] serkaru:
I'm coming from the Redmi note 5 pro with a 4000mah. The Mi 9 battery drains pretty quickly, I'm only getting around 5hrs SOT. Some people are saying they're having great battery life with this device, unfortunately I'm not having the same experience.
[Xiaomi Mi 9 Real Life Review] psykoly:
Nice nice

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] 4Freedom:
7 hours screen on. (With MIUI battery optimizations disabled)

Awesome for 3300mah
[Xiaomi Mi 9 Real Life Review] psykoly:
Only wifi ?

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] 4Freedom:
Nope, always on 4G+.
[Xiaomi Mi 9 Real Life Review] psykoly:
Really nice bro [emoji106]

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] psykoly:
28h standby and mostly 4g usage.Awesome for 3300 mah battery

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] bilal91:
not bad...not bad at all :D
[Xiaomi Mi 9 Real Life Review] blodia2000:
Whats exact version is?? I had "system android" draik battery

---------- Post added at 07:09 AM ---------- Previous post was at 07:01 AM ----------

Do you have answeaf????
[Xiaomi Mi 9 Real Life Review] Vuh:
Im getting 5 hours of sot. How do you guys manage to get 6+ hours? Is there any setting or tweak I am missing?
[Xiaomi Mi 9 Real Life Review] 4Freedom:
Depends on usage.

For example, I get about 6 hours of gaming.

But they became 10 hours if reading ebooks...

Browsing on the internet 7/8 hours....

So...

Brightness, signal network, sensors, installed applications may increase battery consumption.

You can remove unused preinstalled application if you want

Here is the tool: https://github.com/Saki-EU/XiaomiADBFastbootTools
[Xiaomi Mi 9 Real Life Review] blodia2000:
Mora info

My phone is drain battery on "android system" is always the app that drains more battery, what this may cause???
[Xiaomi Mi 9 Real Life Review] Lil Geeky:
I'm on my first day using the phone and getting 7h 30min !

and I think you can't be sad for any SOT if you have a phone that can charge 80% in one hour
[Xiaomi Mi 9 Real Life Review] Vuh:
~30 mins of gaming, mostly social media and browsing. Screen brightness is not too much, GPS and WiFi is off, 4G+ with half signal strength (sadly this may affect i guess), bluetooth is always on and connected to Mi Band. I noticed that phone is suffering from a heavy wakelock issue and still couldn't figure out how to solve it. I am so jealous of people who say they are getting 7-8 hours of sot :D
[Xiaomi Mi 9 Real Life Review] disasterx:
%20 left 4h20m sot :/
[Xiaomi Mi 9 Real Life Review] abelian grape:
Hope you guys can help.

I just had my Mi 9 for 3 days and charged it once after it got to 10% battery. After a full charge, Played a couple youtube videos, used Twitter lite for short periods and turned WiFi on for about 4hrs.

Now at 12% battery level, SoT is 4hrs 45mins. At this point, I observed Android system used 20.2% of the battery. Based on some posts here, my phone's battery isn't faring well compared to others.
[Xiaomi Mi 9 Real Life Review] alese13:
I only get 3-4 hrs sot with system wide dark mode, no gaming, no gps, a little Bluetooth and 50% wifi.. I even debloated the device. Very sad because beside this really bad batter performance the phone is great.

I'll switch off the miui 'smart' battery optimization completely, maybe that'll help.

If anyone has a good advice on how to achieve 6+ please let me know. Maybe I got a broken device ?

I'm on Global stable 10.2.24
[Xiaomi Mi 9 Real Life Review] psykoly:
Try global beta bro.

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] alese13:
I really thought about this a lot, but I just set up everything perfectly and besides the battery everything works nice now. I'm super busy atm and I'm afraid I have to spent 1-2 full days rooting and flashing and sth. goes wrong. Back in the days i loved to spent that time but now I barely found the time to set up the new phone in the first place ??

But if that's the best option to get at least 6 hrs sot I guess I have to take the time soon and do it! I'm hoping for an official update for the global version that might fix this, but no one knows when and if i guess. Thanks for the advice bro!
[Xiaomi Mi 9 Real Life Review] alese13:
My screen on time almost doubled! Im still on global stable, but I switched off the Google assistant:

Settings - Manage Apps - 3 dots - Default Apps - Assist & voice input - Assist app - None

Yesterday I got 5,5 hrs sot 100% to 11%

Today I get 4,5 hrs sot 100% to 50%
[Xiaomi Mi 9 Real Life Review] blodia2000:
I'm going to try that, in a few days I'll tell you
[Xiaomi Mi 9 Real Life Review] Zibi1970:
I will not give you what the SOT is, but I can give you how much the phone lasts. I have permanently connected: LTE, GPS, WIFI. The dark display mode is on. The phone lasts about 30-35 hours.
[Xiaomi Mi 9 Real Life Review] ludek1111:
Better than s6 edge.

One day works. If you do not use wireless charging, better to wait for Mi 9T.

Synchro off, wifi, LTE always on, always on display on, bright theme.

#1

#2

#3
[Xiaomi Mi 9 Real Life Review] redmyth79:
I'm was getting 9-11 hrs screen on with with Global 10.2.24.0 but it changed today so I will see the difference with 10.2.26.0

But before 9-11 sot with 17-20hrs combined before I recharged. And never totally drained.

I think it's doing a good job overall. Especially for 3300 mAh .

I have just about every Galaxy up through the S9+ and most LG Flagship's to and this beats all of my others by hours! I bought a 4200 for my LGV20 and it gets smoked by this. I think MIUI has some pretty decent optimization.

I can't seem to upload my pics they may be to big I don't know.
[Xiaomi Mi 9 Real Life Review] ludek1111:
Its not it too much if I have 15 percent of signal consumption at the end of the day and screen 16 percent?
[Xiaomi Mi 9 Real Life Review] Angx:
I have question... Is it normal, that I have SOT 3,5h-4h max when I mainly uses messenger app? It's my first phone with amoled, so I really don't know... For me its very bad time..
[Xiaomi Mi 9 Real Life Review] andi9201:
I've made a similar experience with the 10.2.26.0 Global. I was also not happy with the SOT in the Global 10.2.24.0 , but then turned of the Google Assistant and got around 10h of SOT. Now struggling again with 4-6h SOT, the standby drain during night is also much higher than before with Always-On deactivated for 6h (approx. 10-15% instead of 4%).

I have Wifi Calling and VoLTE turned on and use the Nova Launcher. Do any of them significantly drain the battery?
[Xiaomi Mi 9 Real Life Review] plaja:
Miui 10 global beta 9.5.30

Sot 6h

Remaining battery 19%
[Xiaomi Mi 9 Real Life Review] toscha42:
Do you think it's helpful to pollute each and every thread?
[Xiaomi Mi 9 Real Life Review] malbert16442:
So I recently got this device this is my third cycle.

Global firmware gave me terrible battery less than 4 hrs sot Android system 40%. After switching to global dev I have better battery all day heavy usage.
[Xiaomi Mi 9 Real Life Review] malbert16442:
4th cycle really good performance.

Just used DC dimming and remove some apps from autostarting still on global beta.

.
[Xiaomi Mi 9 Real Life Review] valehz:
Hi, I'm experiencing very bad battery life with my 1 month old mi9. I get almost every time 3hr sot with pretty much nothing installed on my phone and using Facebook, WhatsApp and chrome (I use swiftkey instead of gboard, I don't know if that's draining the battery). One thing that I have done is stopping a lot of apps that I don't want running in background in the battery settings. Did you stop processes in background too?
[Xiaomi Mi 9 Real Life Review] iOrpheus06:
SOT isn't the only important thing here. Screen brightness and standby time are also important factors. If your phone spends a long time on standby, unplugged, then small SOT is justifiable, and obviously, higher screen brightness drains even more battery.

Signal reception is also a factor in battery drain as lower signal reception (WiFi or Cell) makes the phone scan more frequently.

As for me, I'm on global stock and leave my battery settings on stock settings, neither do I close all my apps and kill them from the memory. I just use my phone, switch apps without swiping them out of the memory, and lock when I'm done using it. Gives me about six and a half up to eight hours of continuous usage (Facebook, YouTube, Twitter, Kiwi Browser, etc) from 100% to 15% consistently. At night, standby drain is quite noticeable since I do use AOD all the time but considering other factors like poor signal reception, it is still a decent cycle.

Nonetheless, my mi 9 still gives me a much better battery life than my old S7.
[Xiaomi Mi 9 Real Life Review] valehz:
Okay I forgot some important details, I'm not a newbie ahaha. The fact that leaves me unimpressed is that yesterday I used the phone always on WiFi with auto brightness (indoor) and did around 3hr sot on around 12 hours of battery.

By the way I didn't mean that I close all recent apps, I mean that I added a lot of apps in the "close process in background list" in the battery saving settings (see screenshots) but I don't really know if that's draining battery instead of saving it. Did you do the same?
[Xiaomi Mi 9 Real Life Review] iOrpheus06:
Nope, I haven't touched any of those settings
[Xiaomi Mi 9 Real Life Review] MysteriousStranger:
You are probably inside the house the whole day, what do you expect? Not even 4G or higher brightness lol.

This is not real-life usage
[Xiaomi Mi 9 Real Life Review] malbert16442:
This was the 4th cycle I have the same battery always with lte on 6 hours sot min. I use alot of social media apps. So for me this is real world. The example with Amazon video was me waiting in a lobby. everyone's usage is different. Coming from my last phone opening Snapchat would drain my battery extensively this is as real as it gets for me.
[Xiaomi Mi 9 Real Life Review] MysteriousStranger:
I get around 5-5:30 hours max on a mixed use of 4g and Wifi. (Im using dual-sim also)

What rom are you using? Global?
[Xiaomi Mi 9 Real Life Review] toscha42:
Seconded. I'm not a fan of any battery snake oil or other kind of battery voodoo at all. Nevertheless the battery easily lasts for two days at moderate usage. At nighttime, no flight-mode, battery loss is around 0.5 % per hour.

Cheers

Toscha
[Xiaomi Mi 9 Real Life Review] psykoly:
Which rom bro ?

MI 9 cihazımdan Tapatalk kullanılarak gönderildi
[Xiaomi Mi 9 Real Life Review] toscha42:
It's Global Dev, currently 9.6.27,

Cheers

Toscha
[Xiaomi Mi 9 Real Life Review] malbert16442:
Global dev
[Xiaomi Mi 9 Real Life Review] valehz:
Do you guys have Gmail push notifications and still get 6+ hrs sot?
[Xiaomi Mi 9 Real Life Review] malbert16442:
For me yes have 4 gmails and 2 emails syncing
[Xiaomi Mi 9 Real Life Review] redmyth79:
I just stuck a Nova launcher on mine to try it out.

I use a dark theme, and I turned it to dark as well on setting. But I use wifi and everything and I get great standby and SOT.

Just the other day I got 31hrs with 6hrs and 23 minutes SOT so I do not see much of a issue with the draining on standby.

But also I noticed because I do have accubattery app on it that when it gets to 100% on the display it's never really there unless you watch it get to the point of quit charging and zero out on the amp draw.

But it sounds like you added a new app that is running in the background. Do you ever clear your Cached data from storage? And in the security app on this phone you have optimization, data cleaning, battery opp. And other features. I optimize my phone at least once a day.
[Xiaomi Mi 9 Real Life Review] 4Freedom:
Yes. Sure.
[Xiaomi Mi 9 Real Life Review] Ralsei:
Well, i dont know if its normal, but since i got the 10.2.13 update i had 2days and 13hours of battery life (With WIFI 5Ghz + Bluetooth [due to xiaomi mi band 4] + gps 24/7), i used to have around 1 day and half of battery life before the update.

I have gmail push notifications and i use a lote instagram and whatsapp (and i play around 30-40 minutes per day god of war in the psp emulator [PPSSPP], the two big drops of the battery are from this), i also dont use battery saver.

I have the latest miui version (10.2.13)

Edit: i also want to add that i dont use 4G due to my ISP have in my city Free Wifi (which is pretty good, i have cover on almost the entire city), but i have a simcard installed on the phone.
[Xiaomi Mi 9 Real Life Review] Laptapper:
Hmmmm, the sot is mainly depending from brightness. I'm using Autobrightness mod and mostly using the phone in outdoor sunlight or at least daylight and I'm getting around 6 hours sot within 24 hours complete discharging. Over night around 4% discharge.

I think if I would use the phone only indoor and in loe light it would be around 8 to 9 hours.

I'm on debloated modded xiaomi.eu with around 4 apps with no battery restrictions. I'm using leandroid with 10 minutes offline rhythm and offline wifi data over night.
[Xiaomi Mi 9 Real Life Review] redmyth79:
So your saying your phone gets a combined 24hrs with 6rs of it SOT?

---------- Post added at 02:43 AM ---------- Previous post was at 02:38 AM ----------

Holy ****. I never went by that o e I installed Accubattery.

On this one I have over 9hrs and 14min with 39% left! On 10.2.28.0 EU global

---------- Post added at 02:43 AM ---------- Previous post was at 02:43 AM ----------

Holy ****. I never went by that o e I installed Accubattery.

On this one I have over 9hrs and 14min with 39% left! On 10.2.28.0 EU global
[Xiaomi Mi 9 Real Life Review] Laptapper:
Hi

Please tell us on which ROM you are and which SOT you've got now?

I'm on siberia with the best SOT I have ever had, but I've never reached 9 hours with 39% left.... It's unbelievable!
[Xiaomi Mi 9 Real Life Review] heavennn:
I got 5hrs. Not bad.
[Xiaomi Mi 9 Real Life Review] Laptapper:
With siberia, velis autobrightness, fde.ai, gms doze I get around 6 to max 7 hours SOT in around 30 hours discharge from 95 % (smart charging activated) to 5 % (i didn't discharge lower than 5).

But never like 9 hours SOT with 39% left......
[Xiaomi Mi 9 Real Life Review] diako_dj:
The screen on time with Xiaomi.eu (9.11.07) ROM is amazing.. I get an average of 9 hrs
[Xiaomi Mi 9 Real Life Review] nahsha:
Any mods that you did?
[Xiaomi Mi 9 Real Life Review] diako_dj:
no I just did A clean install without Rooting
[Xiaomi Mi 9 Real Life Review] elkorany:
Not long time but it is sufficient to me
[Xiaomi Mi 9 Real Life Review] marvinsafco:
I usually put screen brightness to 50% and disable location/gps. Last me for 6-8hrs, no heavy gaming and video.
[Xiaomi Mi 9 Real Life Review] 4Freedom:
Since MIUI 11 I rarely exceed 4/5 hours of screen on
[Xiaomi Mi 9 Real Life Review] catalindobre:
I am in the same boat.
[Xiaomi Mi 9 Real Life Review] MaxArt1405:
Pixel Experience 10 about 8-8.5hrs sot
[Xiaomi Mi 9 Real Life Review] 4Freedom:
I am noticing a much better battery usage since i update to latest stock firmware Global MIUI 11 11.0.7.0 QFAEUXM

And after i debloated MIUI system through XiaomiAdbFastbootTools disabling the following apps:

[IMG="https://i.imgur.com/MHo3l7x.jpg"]https://i.imgur.com/MHo3l7x.jpg[/IMG]

[IMG="https://imgur.com/a/4uBVTyf"]https://imgur.com/a/4uBVTyf[/IMG]

About 8+ SOT.
[Xiaomi Mi 9 Real Life Review] Laptapper:
Derpfest ROM battery

Hi to all

I'm on latest derpfest

https://xdaforums.com/Mi-9/help/android-10-derpfest-rom-10-official-t4032543

The battery usage looks great. See pictures
[Xiaomi Mi 9 Real Life Review] Laptapper:
How is the situation now, some weeks later?

Which ROM you're using and with which SOT and overall standby time?

Please let us all know.

I'm on newest derpfest and still around 6 to 7 hours SOT in around 30 hours. I'll think it's not bad after baught around 10 month ago between heavy and normal daily usage?
[Xiaomi Mi 9 Real Life Review] Rizali:
BeastROM v1.6-190829.

[ usage: chrome, YouTube, WhatsApp, phone, Facebook, Spotify, e-commerce]

> Always on 4G

> No GPS

> No Bluetooth

> AoD by raise
[Xiaomi Mi 9 Real Life Review] Laptapper:
I'm on havoc 3.2 not in case of best feutures but in havoc I can get the best balance with performance smoothness AND for me important: best battery performance in android 10.

My mi9 is around 10 months old with normal to heavy usage....
[Xiaomi Mi 9 Real Life Review] Roychook:
6 Hrs SoT. Is it normal?
[Xiaomi Mi 9 Real Life Review] extradip:
Miui 12 installed 3 days ago.

Today i had 3h sot, everything was disabled. Only using wifi or 4g, browsing social media and little of Spotify.

Even desinstalled all xiaomi bloatwares like msa analytics and many more.

No super wallpaper ****.

No autostart apps, nothing i've disabled everything possible.

Poor i say poor battery life.

Disapointed.
[Xiaomi Mi 9 Real Life Review] Vitabis:
I also had bad battery life after MIUI 12 update.

But then I did a factory reset and now it's a noticable difference.
[Xiaomi Mi 9 Real Life Review] extradip:
Did nothing for me...

I installed many apps trying to understand what the problem is and finally discovered that the phone is never going to deep sleep when locked.

Some sensors are always searching for something and the cpu is always at his maximum speed. I figured that the default mi browser is always using two sensors : accelerometer and gyroscope EVEN if the app is actually disabled (not desinstalled i can't figure why i can't delete the package via adb...) that's insane !!

I also think that's not the only problem !!

So i'm stuck even with battery saver mode activated all day and apps like naptime trying to block all sensors on locked screen, in addition to that it doesn't help at all !!!!!!!!!! ?

Miui Global 12.0.1 stable (QFAEUXM)
[Xiaomi Mi 9 Real Life Review] onolox:
What I can say, be on the bleeding edge of updates in xiaomi, is to be a guinea pig.
[Xiaomi Mi 9 Real Life Review] boulete:
Hello, i'm little bit worry about my battery health.

AccuBattery say the battery health is 66% with only 2177 mah.

Do you think AccuBattery is trusted App ?

My SOT is 5 hours average.

Thank you
[Xiaomi Mi 9 Real Life Review] Dyrex2004:
I don't know the battery health of my device, but I get 6-8 hours of SOT on AOSP and CAF based ROMs!
[Xiaomi Mi 9 Real Life Review] vitabissj:
I suggest reading this topic:

https://xdaforums.com/Mi-9/help/xiaomi-plans-battery-life-t4123079

Mine showed a low capacity too in Aida64 and AccuBattery (around 2500MaH)

I followed the procedure in the other thread and now it shows around 3150
[Xiaomi Mi 9 Real Life Review] hyilmaz4641:
With this setting I just have 7 hours of sot almost 20% increase https://xdaforums.com/showpost.php?p=83585007&postcount=46
[Xiaomi Mi 9 Real Life Review] Laptapper:
Please share your battery consumption.

My is really good with 18 months using Mi9. See attached pictures.
[Xiaomi Mi 9 Real Life Review] Vogie:
Please share your ROM and Android version.
[Xiaomi Mi 9 Real Life Review] Laptapper:
syberia_cepheus-v3.8-20200607-0331-OFFICIAL.zip

Android 10

Some fine tuning in build.prop and some frozen and deinstalled sys apps
[Xiaomi Mi 9 Real Life Review] adonim1985:
Screen Refresh 24/7 - mod 84 Hz (MIUI 9.6.27). OC Adreno 640 GPU (810 MHz min/max clock 24/7 - Anturu 8: 522.000).

LTE Results (5-7h. in work): 4h.30m/5h average (240 minutes +-).

WiFi: 7-7.30h.

The battery is at least good for its capacity and increased screen refresh. :)
[Xiaomi Mi 9 Real Life Review] Jokubas:
Getting only around 3 hours of sot. My mi 9 is a little over 2 years old. It's kinda disappointing and feel like it should get more. I'm on the newest miui 12 update.
[Xiaomi Mi 9 Real Life Review] leledumbo:
Check your battery health with something like AccuBattery. Mine is around the same age and indeed 3-4 hours of SoT is all I can get these days. My battery health is down to 74%, last year it was still around 82%. Effectively the battery capacity I have now is less than 2500mAh. I already eye on a replacement battery, but I think I'll wait a little more.
[Xiaomi Mi 9 Real Life Review] Jokubas:
Yeah my is around 61% (2100mah). I tried doing battery calibration, doing a factor reset and nothing helped. I really like my mi 9 but just because of battery life I'm thinking about getting a new phone. I guess I'll try replacing the battery but I don't know if it's really worth it.
[Xiaomi Mi 9 Real Life Review] leledumbo:
If you still want to use it for a prolonged period of time, replacing the battery is a small worthy (and cheap!) action to do. SD855 + 6GB of RAM will still be valid for years to come, as even SD845 is still going strong. Calibration is only useful if the actual capacity is not yet known, factory reset won't do anything, it's a hardware deterioration problem and only hardware replacement can fix it.
[Xiaomi Mi 9 Real Life Review] bogdan_gy:
no hardware deterioration!I had same problem,replaced the battery,new one,original,and I can get about 3-4 hours sot!I tried everything,from optimizing the apps to swapping many many roms,beta,stable,custom,nothing worked!
[Xiaomi Mi 9 Real Life Review] cezikos:
MIUI 12.5.2

SoT 6h.