A new unit with self-test capability will automatically run a self-test on start-up and then run periodic tests on a set schedule, often every 14 days by default. During the test, the UPS will place the load onto battery power to test the strength of the battery. The following tip describes, how to perform a functional self test of the following Uninterruptible Power Supply (UPS) units: IBM Uninterruptible Power Supply 7500XHV, 2130-3RX IBM Uninterruptible Power Supply 7500XHV, 2130-3JX IBM Uninterruptible Power Supply 7500XHV. 2130-6RX IBM Uninterruptible. An electrical device known as an uninterruptible power supply, often known as a UPS or uninterruptible power source, delivers emergency power to a load whenever the input power source (or) mains power fails. A UPS varies from an auxiliary, emergency, or standby power system (or) standby generator. Checking UPS battery health often begins with a self-test of the unit. Organizations that proactively perform UPS battery health checks. Uninterruptible Power Supply testing is a structured process for evaluating and verifying the functionality, capacity, and reliability of a UPS system. It is widely used in scenarios with extremely high requirements for power supply reliability and.