An Online Uninterruptible Power Supply (UPS) is a critical component for ensuring the reliability and continuity of power for sensitive electronic equipment, particularly in environments where power quality is paramount, such as data centers, hospitals, and industrial facilities. Unlike other types of UPS systems, the Online UPS operates by constantly supplying power from its battery through the inverter, even when utility power is available. This guarantees that connected devices receive a clean and consistent power supply, free from fluctuations, surges, or interruptions.