Phone shuts down on its own while battery is not drained.

[PoseidoN MS]

I don't really know if this problem is mainly due to the ROM, though I highly doubt it, or the device itself. I have a poco F3 and one week ago it started turning off randomly with the battery percentage usually at 40 to 50%. Sometimes when I turn the phone on, it goes back to the percentage when it shut, and sometimes it gets all the way back to zero. I also feel like the battery indicator is not accurate at all. I was on the latest miui stable ROM for the poco F3, and I thought that was probably the issue but when yesterday I upgraded to hyperos the problem persisted.
So what could be causing this issue and how can I resolve it. Thanks in advance!

 

[arkadia_1969]

Such symptoms indicate a very bad condition of the battery. I had similar symptoms on other phones when the battery was very low.

 

[Cartman_KG]

I don't really know if this problem is mainly due to the ROM, though I highly doubt it, or the device itself. I have a poco F3 and one week ago it started turning off randomly with the battery percentage usually at 40 to 50%. Sometimes when I turn the phone on, it goes back to the percentage when it shut, and sometimes it gets all the way back to zero. I also feel like the battery indicator is not accurate at all. I was on the latest miui stable ROM for the poco F3, and I thought that was probably the issue but when yesterday I upgraded to hyperos the problem persisted.
So what could be causing this issue and how can I resolve it. Thanks in advance!

I have exactly same issue on my Redmi Note 10, at first I taught that I have battery issue but now weeks later same thing start to happend on my wife's 11t. What are the odds for it to happened on two separate devices and models So huge doubt about it !
Apparently this is how Xiaomi is pushing you to go for new devices
Thing is that for now we will go and buy new xiaomi products but if same simultaneous crap happen again we will definitely switch to other brend for the whole family, so we are speaking about 4 phones ....
GJ Xiaomi !