The applet is in gnome-applets 2.2.2-2This battery applet works through APM only (the package depends on the `libapm' libray)I am looking for an applet that works through ACPI.You are incorrect. It works (on my computer, right now) with acpi as well.
That is correct (I have check the souce): the applet reads data files in /proc/acpi Nevertheless I note that this applet takes a lot of cpu time: I guess it spends its times to read the data. I am sorry for the mistake. Thanks, Jerome