battery-linux-proc-acpi is a compiled Lisp function in `
Get ACPI status information from Linux (the kernel).
This function works only with the `/proc/acpi/' format introduced
in Linux version 2.4.20 and 2.6.0.
The following %-sequences are provided:
%c Current capacity (mAh)
%r Current rate
%B Battery status (verbose)
%b Battery status, empty means high, `-' means low,
`!' means critical, and `+' means charging
%d Temperature (in degrees Celsius)
%L AC line status (verbose)
%p Battery load percentage
%m Remaining time (to charge or discharge) in minutes
%h Remaining time (to charge or discharge) in hours
%t Remaining time (to charge or discharge) in the form `h:min'