Variable: battery-mode-line-format

battery-mode-line-format is a customizable variable defined in battery.el.gz.

Value

nil

Documentation

Control string formatting the string to display in the mode line.

Ordinary characters in the control string are printed as-is, while conversion specifications introduced by a % character in the control string are substituted as defined by the current value of the variable battery-status-function. Here are the ones generally available:
%c Current capacity (mAh or mWh)
%r Current rate of charge or discharge
%L AC line status (verbose)
%B Battery status (verbose)
%b Battery status: empty means high, - means low,
   ! means critical, and + means charging
%d Temperature (in degrees Celsius)
%p Battery load percentage
%s Remaining time (to charge or discharge) in seconds
%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

The full format-spec formatting syntax is supported.

Probably introduced at or before Emacs version 28.1.

Source Code

;; Defined in /usr/src/emacs/lisp/battery.el.gz
(defcustom battery-mode-line-format
  (cond ((eq battery-status-function #'battery-linux-proc-acpi)
	 "[%b%p%%,%d°C] ")
	(battery-status-function
	 "[%b%p%%] "))
  "Control string formatting the string to display in the mode line.
Ordinary characters in the control string are printed as-is, while
conversion specifications introduced by a `%' character in the control
string are substituted as defined by the current value of the variable
`battery-status-function'.  Here are the ones generally available:
%c Current capacity (mAh or mWh)
%r Current rate of charge or discharge
%L AC line status (verbose)
%B Battery status (verbose)
%b Battery status: empty means high, `-' means low,
   `!' means critical, and `+' means charging
%d Temperature (in degrees Celsius)
%p Battery load percentage
%s Remaining time (to charge or discharge) in seconds
%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'

The full `format-spec' formatting syntax is supported."
  :link '(info-link "(elisp) Custom Format Strings")
  :type '(choice string (const nil)))