Spectre 13-ae0xx shuts down randomly after battery replacement even with charged battery and AC

[Spectre13wk]

I have upgraded to latest BIOS. Windows is  updated and so are all drivers. 

I replaced battery with OEM battery a few days ago. Ever since, I am getting random shutdowns  and even log shows many ACPI errors event ID 13.

Error 6/10/2021 8:11:05 AM ACPI 13 None

": The embedded controller (EC) did not respond within the specified timeout period. <snip>"

When it boots up it shows Event ID 6008 - Unexpected shut down.

The HP battery diagnostic test said cancelled "Calibration required" .

1) First I ran manual calibration with extensive memory test loop till failure.

2) After that HP diagnostic still said calibration required but now it showed an option for calibration

3) Ran that for 3+ hours 

4) HP Support assistant Battery check says battery is working properly but for calibration I need to run laptop  for 3 hours with AC connected. The Laptop shut down before that.

5) So bought Smarter Battery tool that can do calibration. Started that but laptop died before completing it. 

Please help me get out of this cycle. What do I need to do? 

[Spectre13wk]

Here is complete System Information. 

System Information report written at: 06/10/21 08:40:37
System Name: DESKTOP-9V2L1RT
[System Summary]
Item Value
OS Name Microsoft Windows 10 Pro
Version 10.0.19041 Build 19041
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Name DESKTOP-XXXXXX
System Manufacturer HP
System Model HP Spectre x360 Convertible 13-ae0xx
System Type x64-based PC
System SKU 1WU65AV
Processor Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz, 1992 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date AMI F.34, 10/23/2020
SMBIOS Version 3.0
Embedded Controller Version 56.50
BIOS Mode UEFI
BaseBoard Manufacturer HP
BaseBoard Product 83B9
BaseBoard Version 56.50
Platform Role Mobile
Secure Boot State On
PCR7 Configuration Elevation Required to View
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "10.0.19041.964"
User Name DESKTOP-9V2L1RT\nkant
Time Zone Pacific Daylight Time
Installed Physical Memory (RAM) 16.0 GB
Total Physical Memory 15.8 GB
Available Physical Memory 4.65 GB
Total Virtual Memory 31.8 GB
Available Virtual Memory 17.9 GB
Page File Space 16.0 GB
Page File C:\pagefile.sys
Kernel DMA Protection Off
Virtualization-based security Not enabled
Device Encryption Support Elevation Required to View
Hyper-V - VM Monitor Mode Extensions Yes
Hyper-V - Second Level Address Translation Extensions Yes
Hyper-V - Virtualization Enabled in Firmware No
Hyper-V - Data Execution Protection Yes

[Spectre13wk]

Update- 

I am able to run HP Diagnostic at the boot time. I did component -> Power -> battery. The test passed but the status said calibration required (21).  It gave me option of "calibrate" . Ran calibration for 4 hours. It said calibration complete. But still status remains "calibration required".

I even tried draining battery fully through memory test and then ran calibration still it is stuck saying calibration required. 

Meanwhile if I try to use the laptop, I continue to get ACPI error 13 and the laptop randomly shuts down some times within 15 mins sometime within 1-2 hours. 

However the when I ran calibration at boot through diagnostics the laptop does not shut down even for 6 hours. 

Hope this gives some insight to experts. Would appreciate your help. 

[Spectre13wk]

Problem solved - actually problems as there were more than one.

1) Continuous spitting of APCI Error 13 on Event Viewer. - Turns out it was coming from Notebook Fan Control. Had to locate and shut down the service otherwise just closing the program was not sufficient. 

2) Random shut down  -Not sure which one fixed it.

a) Ran full calibration of battery a couple of times. It still says calibration required otherwise is working fine

b) From admin command line ran sfc /scannow 

It found errors and then fixed it. No more random shutdowns. 

Hope it helps someone else.