Keep essential systems running through outages and power anomalies with the Vertiv PSI5 Lithium Ion UPS 3,000 VA. Designed for rack-mounted deployment, this unit is a strong fit for IT teams that need dependable backup power in a 120 V environment without moving to a larger, more complex platform. Its lithium-ion battery architecture is well suited to organizations that value reduced maintenance and longer battery service life. With a 3,000 VA / 2,700 W rating, this UPS is sized for critical servers, network equipment, and storage that must stay online long enough for graceful shutdown or generator transfer. The rack-mount design helps preserve space in closets, edge rooms, and compact data center rows where every rack unit matters. For buyers comparing lower-cost alternatives, the PSI5 line offers a more premium power profile and battery technology that better aligns with business-critical uptime requirements. This model is a practical choice for infrastructure teams standardizing on 120 V power protection and looking for a UPS that balances capacity, serviceability, and deployment efficiency. It is especially relevant where maintenance windows are limited and the cost of interruption is high.