Uninterruptible Power Supply (UPS) systems safeguard electronics and critical systems during power outages by providing backup power through their batteries. UPS batteries degrade, which can compromise their performance and reliability. UPS batteries lose capacity due to age, temperature, and charge/discharge cycles. As the battery\'s ability to hold a charge declines, so does its ability to provide backup power during an outage. Periodic testing identifies early signs of degradation, allowing for timely maintenance or replacement, extending the UPS system\'s life, and ensuring reliability during critical power events.