Apple has released a software patch for the Wall Street PowerBook G3 Series. The PowerBook G3 Series Battery Reset Update, however, should not be used on the latest, slimline PowerBook G3 1999 Series.
According to Apple, the update "addresses a situation, that may occur with some PowerBook G3 series computers, in which the main battery won't charge, doesn't show up, or behaves in an unexpected way. The update includes the following software: PB G3 Battery Reset, an application you can use to reset your battery, if necessary. This update may not address all battery-related problems."
The update requires Mac OS 8.1 or later to be installed on the PowerBook.