The 1.1 version of Apple PowerBook 15" Battery Updater for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. Apple PowerBook 15" Battery Updater for Mac is included in System Tools.
From the developer:
Apple PowerBook 15" Battery Updater improves the performance of batteries that may develop short run times.
System Optimization
Device Assistants