Protect critical network and server equipment with the Vertiv Liebert PSI5 Lithium-Ion 1500VA UPS. Built in a 2U rack/tower chassis, it fits neatly into space-constrained infrastructure while still delivering the backup capacity needed to ride through short outages and power disturbances. The lithium-ion battery platform is a practical choice for teams that want to reduce routine battery maintenance compared with conventional battery systems. At 1,500 VA and 120 V, this model is well matched to branch offices, edge racks, and smaller server rooms where power protection must be dependable without consuming unnecessary space. The rack/tower design adds deployment flexibility, and the TAA designation supports purchasing requirements in regulated environments. For organizations that need a compact UPS with enterprise-grade positioning, this model offers the right balance of capacity, footprint, and procurement readiness.