I found an interesting command today while I was browsing around. I've been trying to figure out for a long time how to list my batteries health in Linux.

Today I found such a command.

grep -F capacity: /proc/acpi/battery/BAT0/info

When I run this on my laptop I get:

design capacity:         5200 mAh
last full capacity:      5148 mAh
 

Which I think really sucks since this laptop is around 2 months old.

Anyways, I hope you enjoy this little tidbit.