Colin Henein has announced the release of SlimBatteryMonitor 1.4, the latest version of his power gauge for Mac OS X that tracks iBook, PowerBook, MacBook and MacBook Pro batteries, as well as many UPS batteries. Version 1.4 adds a slimmer shape that incorporates textual information about percentage charge or time remaining into the graphic. It also supports text-only display, and is packaged as a Universal Binary. SlimBatteryMonitor is a free application, but donations are welcomed.