The 5104765 is a Fluke 500 Series Battery Analyzer designed for comprehensive battery testing, maintenance, and performance analysis. It measures internal battery resistance, DC and AC voltage, DC and AC current, ripple voltage, frequency, and temperature with high precision across multiple ranges. The instrument features automatic sequence testing of battery strings with integrated data logging, profile management, and historical trend analysis capabilities, supporting up to 100 profiles with 450 batteries each and 999 records per measurement position. The analyzer offers wireless communication for remote data download and display via the dedicated Fluke Battery Analyzer mobile app, along with PC-based Fluke Battery Management Software for comprehensive data analysis and report generation. This makes it an ideal tool for data centers, UPS systems, and industrial battery maintenance where reliable performance monitoring and trend analysis are essential.