acpi - Shows battery status and other ACPI information from the /proc or the /sys filesystem

To view battery info

$ acpi

To view the ac adapter information

$ acpi -a

To view cooling device information

$ acpi -c

To view all information 

$ acpi -V

To display the non-operational devices

$ acpi -s

To show additional details if available

$ acpi -i

To view help options

$ acpi -h

regards,

T.Dhanasekar