Keep servers, network gear, and critical edge systems online with the Vertiv Liebert PSI5 Lithium Ion UPS. This 3,000 VA, 2,700 W platform is built for environments that need more than basic battery backup: it combines line-interactive power conditioning with automatic voltage regulation, a wide 75 V AC to 146 V AC input range, and lithium-ion battery technology designed for a 10-year battery life profile. The rack/tower form factor supports flexible deployment in data closets, branch infrastructure, and distributed IT rooms where space and serviceability matter. With 20 minutes of runtime at half load and 9 minutes at full load, it gives teams enough time to ride through short outages, complete controlled shutdowns, or wait for generator transfer without rushing recovery. Hot-swappable batteries and an external management card help reduce maintenance friction and improve operational visibility. The included RDU120 card adds remote access for teams that need status awareness beyond the rack. For organizations standardizing on higher-density protection, this model justifies its place through longer battery life, stronger output capacity, and the kind of control that matters when downtime is expensive.