Beyond Slim Battery (or whatever), Unplugged. A better battery monitor.

Please take a look at Unplugged.  This application runs a daemon in the background that monitors battery level as well as the plugged/unplugged state and alerts the user via growl on configurable battery level threshholds, as well as when the laptop has become plugged/unplugged.  It’s a preference pane, no menubar app required.

This app in combination with “hardware growler” is a pretty slick setup.

(Submitted by J. S. Townsley)

Yet another alternative solution to the built in battery monitor.