Laptop suddenly turning off on battery Aspire E15 E5-576G-7825

I've had my laptop now for about 3 years and all was good until recently. I used to always use my laptop on AC power, but recently due to the many crisis happening in my country Lebanon, we don't have electricity all day long, so I've been forced to use it on battery. The problem is it turn off suddenly, and doesn't turn on again until I plug it to the wall and this happen at varying battery percenteges, sometime it could be 90% sometimes 30%, it's really random, sometimes I might not have anything running and it turns off, or as soon as I open something like the minecraft launcher or the web browser, it also turn off.
I tested my battery health using the windows terminal test, and also using the built in manjaro battery health chekcer (Dual Boot) and the acer tester, they all say that it us 75% battery health, I know not the best, but it shouldn't do that.
I've also recently changed the thermal paste but the paste wasn't good, I ordered a better one online, but i don't think it is the problem because I've been monitering the temperature, and all seams good under 50 degree, and there is no thermal throteling.
I've tried reseting all the battery setting in windows but still hasn't fixed the problem.
Note that this only happen on battery when plugged in everything is completly normal even when the CPU is at 100% and all temps are good, around 85°C.
Any help would be apreciated and thank you in advanced.

My Laptop:
Acer Aspire E15 E5-576G-7825
Intel core I7-7500u
Nvidea GeForce 940MX
8GB Ram

Thread was edited to add model name to the title

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JackE

Boot to Windows. Then go to the elevated command prompt. Enter 'powercfg /batteryreport'. Then return to the desktop. Open file explorer. Then search for' battery-report.html' in the c:\windows\system32\ sub-folder. Double-click to open it in the browser. Post screenshot of the first part of the report if possible that compares design full charge capacity with its remaining full charge capacity.

While still inside Windows, open Device Manager. Click batteries folder. Right click and uninstall all drivers in this folder. Then exit Device Manager without reinstalling anything. Then shut down Windows normally. The boot to Windows again. Check battery operation again in Windows, not Manjaro

mmchokor

I disabled all the drivers in the battery section in device manager and rebooted my laptop, and made sure that there is nothing there after the reboot. I ran a stress test using XTU and it was doing well for 2 minutes but then it shut down.

I included the test that you recommended down below.

Thank you for your help, appreciate it.

Image: https://us.v-cdn.net/6029997/uploads/editor/qs/wz60lvxfsjxn.png

JackE

>>>I disabled all the drivers in the battery section in device manager >>>

Sorry no. Not disable. Uninstall. Please uninstall ALL driver under batteries folder. Upon shutting down and cold booting, Windows should automatically re-detect the charger and battery and re-install fresh driver copies.

mmchokor

I uninstalled all the drivers and rebooted my system, but i didn't do the trick. I opened couple of programs and at approx 70% battery life it shut down and didn't turn on until i plug it to the charger

JackE

>>> ran a stress test using XTU and it was doing well for 2 minutes but then it shut down.>>>

This type of test is a problem. Heavy power load stress testing without the charger plugged is definitely NOT recommended even for new batteries. These batteries are not designed to run that way. While your old battery still seems to have an acceptable 75% of its original energy capacity (31 watt-hrs), even new it's still not designed to supply that energy in very short time periods (watts) needed when you stress it under heavy CPU/GPU power consumption loads. Both the battery and the charger need to work in tandem to supply enough watts when under heavy power load such as gaming or cpu/gpu stress testing. A new battery will certainly help but you're still stressing it beyond it's power delivery capabilities if the power demands are too high.

mmchokor

Yeah i agree this test is not ideal. I tried it again but this time i only opened 2 tabs in Firefox and a VS Code (text editor) and the same happened again. Do you conclude that it's not a software issue and it's a hardware issue (battery)?

Thank you a lot for your help i really appreciate it.

JackE

If you don't have any non-M icrosoft scanners running in the background, my best guess is a battery replacement is in order. However, double check Task Manager for actual CPU, GPU, HDD/SSD, etc usage and processes so that some power hungry app isn't being overlooked.

mmchokor

There is a lot of MS process that are always running in the background, windows is always using a little bit under 4GB of ram, and that annoying software protection platform always use 30% CPU, and when i run Manjaro Linux everything works fine because it's way lighter as an operating system than Windows 10, more reasons that push me to move to Linux🤦‍♂️.

You are right my battery is at 75% health and can't output the power needed anymore so a replacement is due.

I appreciate all the help and time that you gave, it was really helpful.

Have a good day/night.

JackE

good luck. Jack E/NJ

Easwar

Hi mmchokor,

# Try to update the battery driver

1. Hold windows key and hit letter X.
2. Choose the device manager option.
3. Go with the option battery.
4. Under the title battery.
Update Battery Drivers in Windows EASILY - Driver Easy