old school solution is the devilspie2 utility. but that may not work on Wayland

there can be various file index services that run to allow faster searching of the system.

these typically run in a schedule, but in a new install they may run on the first boot.

after they run the first time, they will run occasionally on a schedule.

I am not sure if time shift does this or not, I never use that tool.

For mouse battery it may depend on the specific mouse and it’s drivers.

there are some enhanced mouse/keyboard utilities out such as that ‘libratbag’.