[thatspartan]

Speaking of laptop batteries as a UPS source, some laptops come with battery management features that keep the battery healthy even when plugged in full time, usually exposed as a setting in the BIOS/UEFI. I've found that business/enterprise type laptops like Thinkpads and Probooks have this as standard, for example Thinkpads from 2010 already had this, assuming you're lucky enough to find one with a usable battery of course.

[cguess]

Macbooks do this as well automatically if kept plugged in for a certain period of time.

[kassner]

Is there something for Linux/debian? I’m assuming this is part of the OS and wouldn’t work on a MacBook with Linux.

[seszett]

It's managed by the OS when it's awake, by the bios (or uefi or whatever) when it's sleeping.

Both methods work under Asahi Linux on the ARM macs.

[mac-attack]

Look up tlp's charging thresholds. Just set mines up for debian