Vertiv Liebert PSI5 Lithium Ion 1500VA UPS, 120V, RDU120 | Rack/Tower

Keep essential infrastructure online with the Vertiv Liebert PSI5 Lithium Ion 1500VA UPS. Designed for server rooms, network closets, and mission-critical edge deployments, it delivers 1,350 W of backup capacity in a rack/tower chassis that fits standard infrastructure layouts. The lithium-ion battery design is built for long service life, while hot-swappable support helps reduce maintenance disruption when battery service is required. This UPS is engineered for environments where runtime, power conditioning, and management matter. Automatic voltage regulation helps stabilize incoming power across a wide input range, reducing unnecessary battery use during common utility fluctuations. At full load, the unit is rated for 8 minutes of backup time, and at half load it extends to 18 minutes, giving teams enough time for graceful shutdowns or short bridge-over events. The included RDU120 card support adds remote monitoring capability for distributed sites and unattended racks, helping operations teams keep an eye on power conditions without local access. With RJ-11 dataline protection, EPO support, and a 5-year limited warranty, the PSI5 is positioned for buyers who need more than basic battery backup. It is a practical choice when uptime, serviceability, and lifecycle value all need to hold up under real infrastructure demands.