I recently got a new laptop, (well — not new, but new to me), a HP ZBook 15 G5. After installing Arch Linux and the i3 wm I spend some time setting up power management, suspend on idle, and figuring out the state of the battery.

I have two Dell OptiPlex 9010 SFF computers, and one of them have been unused and unplugged for a long time. So long in fact that the CMOS battery is now dead. But replacing it was simple.