Why use Watts?The battery needs to be recalibrated from time to time to keep the onscreen battery time and percent display accurate, and to keep the battery operating at maximum efficiency.
Better battery indicator
Watts can substitute the default menu bar battery icon and adds advanced features. Watts menu will behave as the system battery icon menu, and provides some extra options like calibration assistant and other features.
More useful Growl notifications
Have your battery always in excellent conditions by enabling useful Growl suggestions. For example, allow Growl to remind you to disconnect the power adapter after a long time connected.