I will take a look a this at home, thanks !

Don’t your battery suffer from being plugged for too long ?

You think it’s better without battery saving mode turned on? (Overall performance/battery drain.)

Maybe a glitch? A normal reset or a factory reset will fix it hopefully. And you shouldn’t be using power saver mode all day. It bugs your phone. You should try to do those battery saving tweaks manually

Have you tried restarting your device?
Jokes aside that actually helped me when I had this problem but it was on Android 9.

However, I do not find the Google play services in my application listing. Where is it ?

Ooh okay, got it !

I restarted yes… And since 11 am (it’s half past 3 pm now) I only lost 7 percents…. I understand nothing.

Yup. Exactly. It’s dangerous. And it happened out of nowhere… I wish I could go back to MIUI 11.

lmao. probably the Chinese extracting your media data to their servers 😀

Still I think you should just lower your brightness, turn off Bluetooth and location, clean the ram and junks. And if you can, put it on airplane mode.

Maybe you have some apps running in the background. Does not seem right losing that much battery

really odd. Wonder if some app was in a loop or something. Idk.

may it be fixed by tomorrow or you have a power bank

I have the same phone, google play services was doing that for a while, I think an update fixed that. Now it has google text to speech engine using up the most battery life. I uninstall updates and clear all data for that app and reboot the phone, but it’s only a temporary fix.

IDK, I have PE+ and overnight it discharges slow (with no bluetooth and with 3g ) but while using it , the phone seems to discharge faster than in miui (I have redmi note 8t)

I had similar happen with most brands. It’s most often a process that hangs and runs the phone at near 100% load the whole time. A restart normally fixes it.

Apology for not elaborating by “charging at night” I mean to charge at night until 100% usually after dinner and then use it throughout the night.

The first few days were the hardest to fight the need to charge my mi9t pro when the battery drops to 40%, usually at 2PM – 3PM in the afternoon. But all is good now

Well, honestly I do play game 2-3 hours a day and I don’t approve the way battery saving mode impacts my gaming moment. Beside that I use chatting apps like WhatsApp alot throughout the day, some casual browsing Instagram and very little on web browsing.

If you notice when ever we choose optimize battery, miui always recommend to adjust screen brightness and lock screen time. Both of this is directly affected by how bright you set your phone. So my verdict is, the brighter your screen is the more battery consuming it will be.

I don’t constantly readjusting my screen brightness due to I mostly use it on a well lit area. And I’ll just adjust it when it gets too dark on my screen, this habits enables me to fully utilize the phone without constantly needing to charge it.

Apart for some bugs everything is just fine

I wouldn’t do that. While I agree on the inconsistency to some extent.

I had the problem like original post too. Phone discharged over night for some reason that was not apparent. This happened I think twice within my year of usage.

Overall battery life decreased over time and came back after update to MIUI 12. I think it’s really hard to pinpoint where exactly this comes where. But if your phone is still relatively new, I will couldn’t put a custom rom on it.

Kind of the same situation on poco f2 pro here. Went to sleep with 37% woke up with 1%… And this has only been happening for the past few days…

What a shame… I really enjoy my phone, but this problem was really surprising this morning.. I it does not happen again, because my alarm clock is also my phone..

It’s not the fact that it’s plugged in for hours that’s thw problem. Battery controllers don’t let you overcharge the cell. The reason to avoid charging overnight is battery wear. Draining from 100 to about 10 percent and then charging it up to 100 against couns – theoretically – as one charging cycle. A phone battery can manage between 500 to maybe 1000 cycles before it wears and loses 20 percent of its original capacity. Draining from 80 to 40 and then charging to 80 again would count as 0.4 cycles of weary however the connection is not linear, thus this only results in about 0.2 cycles. I made these numbers up based on articles I read, so they may not be too accurate but should give anyone a general idea of how this works. Theres an app called *AccuBattery*, thet giver you an estimate of how worn your battert is, and how many cycles of wear it costs you to charge from x to y percent. Back to the topic, I reckon this is some kind of a bug, had similar experiences but in my case I only lost 15 percent overnight (airplane, battery saver). I would consider resetting the phone, especially if you haven’t reset it since the last time you updated. MIUI can (doesn’t necessarily) do weird things after updates.

I hope your day was well with 5% at the morning.

maybe you can try the app ”naptime” which can force the phone to doze if buggy miui don’t want to. it doesn’t need root but a few ADB commands, thoses are easy to do

Fortunately, I work at home on Mondays 🙂

First thing I always do is deleting system cache. Helped quite alot of times