Question Battery software or hardware issues?

[ihsaan]

I havent installed a custom ROM in a while so I was feeling bored and downloaded a new ROM, copied the files overs and booted to TWRP recovery and wiped everything. I cant remember what all but i think whatever was available to wipe, I wiped

I then installed ADB to my new PC and my phone was not showing up in fastboot or adb (possible driver issues) and eventually the battery died while in the recovery.

I plugged the phone into the charger and it kept showing the battery empty icon and was not charging at all. I left it on charge for hours but nothing happened.

I eventually got a new battery and while the battery still had life in it I charged it full and then went on to install a ROM from my old PC that already had adb and I used to use it previously for installing custom ROMS.

No the phone works but dies randomly at different battery percentages. Sometimes at 60% othertimes at 40% etc..

Battery drain doesnt seem too bad. When I disable wifi, bluetooth and NFC the battery only drains 50% after 24 hours but if I leave wifi on it drains faster.

When I try to play games at 100% battery after 30 minutes the battery would be at 75% and then just shutdown saying 0%.

Then I plug it into the charger and while the phone is off it'll start charging from 0% and when it reaches 25%, if I turn it on it shows 70%

Could I have deleted / wiped files that I was not suppose to that could cause this kind of a problem?

 

[Laptapper]

I havent installed a custom ROM in a while so I was feeling bored and downloaded a new ROM, copied the files overs and booted to TWRP recovery and wiped everything. I cant remember what all but i think whatever was available to wipe, I wiped

I then installed ADB to my new PC and my phone was not showing up in fastboot or adb (possible driver issues) and eventually the battery died while in the recovery.

I plugged the phone into the charger and it kept showing the battery empty icon and was not charging at all. I left it on charge for hours but nothing happened.

I eventually got a new battery and while the battery still had life in it I charged it full and then went on to install a ROM from my old PC that already had adb and I used to use it previously for installing custom ROMS.

No the phone works but dies randomly at different battery percentages. Sometimes at 60% othertimes at 40% etc..

Battery drain doesnt seem too bad. When I disable wifi, bluetooth and NFC the battery only drains 50% after 24 hours but if I leave wifi on it drains faster.

When I try to play games at 100% battery after 30 minutes the battery would be at 75% and then just shutdown saying 0%.

Then I plug it into the charger and while the phone is off it'll start charging from 0% and when it reaches 25%, if I turn it on it shows 70%

Could I have deleted / wiped files that I was not suppose to that could cause this kind of a problem?

Try to make a clean ROM installation with prior the fw and formating data with yes.....
Follow installation instructions of the chosen ROM step by step and don't delete everything again except with format data yes

 

[RAMBO29]

Did you say you installed a new battery? Was it from official service center? You can use some battery monitoring apps like Better Battery stats /GSAM etc and see what's really causing it. Otherwise fresh install, check for few days.

 

[BigChungus321]

So you got a new battery as a replacement. If you just got this online then there's a high chance the battery is a scam and is not exactly 5020 mAh. I know this because I'm a victim of this too on my older phone, I literally have the same issue. I suggest to get a new replacement, making sure to get it from official Mi Store or service center. In the meantime, calibrate your battery by emptying to 0% (till the phone dies) then charge to 100% while off. Repeat a couple of times and the battery percentage should display correctly. There's also a suggestion of clearing batterybin stats or similar to Poco x3 Pro where you calibrate PMIC, no harm in trying because I tried it before too and it didn't seem to cause any issues.
Here's a link to the guide if you're interested:

Calibration of the PMIC (Vayu/Bhima/Surya) via fastboot.

⚠️HONESTLY READ THIS WARNING ONCE! - CALIBRATION OF THE IC, WOULD NEITHER RESULT IN A HARD BRICK/PREVENT BRICK. AS TO BE CLEAR WITH THIS *HOW TO THREAD*, IS ONLY MENT FOR PEOPLE HAVING PARTIALLY BUGGY PMIC, FACING AFOREMENTIONED ISSUES, HAVING...

forum.xda-developers.com

 

[ihsaan]

But the same issue happened on the original battery also

 

[fobtob387]

"I cant remember what all but i think whatever was available to wipe, I wiped"
So you wiped internal storage? That's probably causing issues.

 

[ihsaan]

Yep I think I did or at least some of it idk.. Can that be fixed?

 

[xXx yYy]

Re-flash Stock ROM.

BTW: Always use Android USB drivers provided by phone's OEM, not those found in Android platform SDK. Then phone should get detected via USB.