This is the Battery Reset 2.0 software Apple released to fix issues with the batteries in G3 series PowerBooks and iBooks not being recognized in software. I pulled this from the internet archive, on a support page that no longer exists on Apple's website.
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1st Download:
North American English Mac OS 8.1 or later - released 1999-11-02 - version 2.0
2nd Download:
Japanese Mac OS 8.1 or later - released 2000-02-10 - version 2.0
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Only for use on a PowerBook G3 Series (family number M4753 or M5343) or iBook (family number M2453) computer. The family number is located on the label on the bottom of the computer. Mac OS 8.1 or later installed