Mickey: The kernel_task issue on the MacBook Air 2017 A1466 sometimes gets resolved after...

I am using a MacBook Air 2017 model A1466, and the device experiences severe slowdowns, kernel_task running at 1000%, and occasional shutdowns when unplugged from the charger.
I have reset the SMC and NVRAM, and sometimes resetting the NVRAM fixes the issue temporarily.
I removed the battery and reinstalled macOS (the problem persists on both Mojave and Monterey).
There is no overheating problem; the device stays around 40°C at idle, and I have fixed the fan speed, but the issue remains...

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