Vertiv Liebert PSI5 Lithium-Ion TAA UPS 1500VA/1350W 120V Rack/Tower

The Vertiv Liebert PSI5 Lithium-Ion UPS is a high-performance power protection solution engineered for edge and distributed IT environments. Combining a compact 1500VA/1350W rating at 120V with advanced lithium-ion technology, this TAA-compliant UPS delivers sustainable, reliable backup for critical devices, from edge servers to networking gear. It is designed to maximize uptime while reducing maintenance, providing up to three times the battery life of traditional lead-acid VLRA units and a five-year advanced replacement warranty. With a flexible rack or tower form factor, the Liebert PSI5 is ready to protect your growing fleet of edge devices and distributed IT infrastructure wherever space and performance matter most.

• Longer battery life with lithium-ion chemistry: The PSI5 uses lithium-ion batteries to deliver significantly longer service life compared with traditional VLRA units. This means less frequent battery replacements, lower total cost of ownership, and improved reliability for mission-critical workloads. The Li-ion pack supports faster charging and deeper discharge protection, helping your equipment stay protected during extended outages while maintaining a smaller footprint and lighter weight for easier installation and maintenance.
• TAA-compliant with a five-year advanced replacement warranty: This UPS is designed to meet procurement requirements for U.S. federal and other government customers, ensuring compliance with Trade Agreements Act standards. In addition, Vertiv backs the Liebert PSI5 with a robust five-year advanced replacement warranty, giving you confidence in ongoing protection, predictable budgeting, and rapid recovery from hardware faults.
• Ideal for edge and distributed IT protection: Engineered for edge computing and distributed IT deployments, the PSI5 safeguards essential equipment—servers, storage, routers, switches, and other critical devices—against power disturbances, outages, and voltage fluctuations. Its compact form factor makes it suitable for remote sites, micro data centers, retail branches, and other locations where space is at a premium but uptime remains non-negotiable.
• Flexible 120V rack/tower deployment: The Liebert PSI5 is designed for versatile installation in both rack and tower configurations. With a 120V input and a scalable footprint, it adapts to diverse environments—from standard IT racks to compact edge enclosures—without compromising performance. The ergonomic design and lightweight Li-ion packs simplify installation, service, and relocation, helping you achieve faster deployment and easier ongoing management.
• Intelligent management and proactive protection: Beyond raw protection, the PSI5 offers intuitive monitoring and alerting capabilities to help IT teams stay ahead of potential issues. Real-time status indicators, battery health information, and event logging enable proactive maintenance and streamlined incident response, ensuring critical devices stay online during power events and reducing downtime across distributed operations.

Technical Details of Vertiv Liebert PSI5 Lithium-Ion TAA UPS 1500VA/1350W 120V Rack/Tower

• Model / Series: Liebert PSI5 Lithium-Ion UPS
• Power Rating: 1500 VA / 1350 W
• Input Voltage: 120 V AC
• Output Voltage: 120 V AC (typical, regulated for connected equipment)
• Battery Type: Lithium-Ion (Li-ion) rechargeable battery pack
• Form Factor: Rack/Tower convertible
• Compliance: TAA-compliant
• Warranty: Five-year advanced replacement
• Protection Focus: Designed to protect edge and distributed IT equipment and other critical devices from power disturbances

How to Install Vertiv Liebert PSI5 Lithium-Ion UPS 1500VA/1350W 120V Rack/Tower

Follow these general steps to install the Vertiv Liebert PSI5 Lithium-Ion UPS in your environment. Ensure you have access to a properly grounded outlet and adequate ventilation for safe operation.

• Choose the mounting configuration: Determine whether you will deploy the UPS in a standard 19-inch rack or as a standalone tower. The PSI5 is engineered for both setups, offering a flexible footprint that accommodates your workspace layout and cabling arrangements.
• Unpack and inspect: Verify that the unit is intact and free of any shipping damage. Check the Li-ion battery enclosure for signs of damage and follow all safety precautions before handling.
• Place and secure the unit: If mounting in a rack, align the chassis with the rack rails and secure it using the provided hardware. For tower installations, place the UPS on a stable surface with sufficient clearance for cooling and access to cable connections.
• Connect input power and protected devices: Plug the UPS into a properly grounded 120V outlet. Connect your critical equipment to the UPS outlets, ensuring total load does not exceed the 1350W rating. Arrange cables neatly to maintain optimal airflow and reduce the risk of accidental disconnections.
• Power up and configure: Turn on the UPS and verify that the status indicators illuminate normally. Use the built-in interface to review battery health, runtime estimates, and event logs. If available, install the recommended management software or management card to enable remote monitoring and alerting.
• Run a self-test and document: Initiate a self-test to validate runtime and alarm functionality. Record the configuration and create a maintenance plan, including periodic battery health checks and firmware updates if applicable.
• Ongoing monitoring and maintenance: Establish a routine to monitor battery health and system events. Schedule periodic inspections to ensure cooling, ventilation, and cabling remain unobstructed and that the UPS continues to protect your critical devices as your IT environment evolves.

Frequently Asked Questions

• Q: What makes the Liebert PSI5 different from traditional VLRA UPS units?
  A: The PSI5 uses lithium-ion batteries, which deliver longer life, faster recharge, and a smaller, lighter footprint compared with traditional lead-acid VLRA batteries. This translates to lower maintenance, improved uptime, and a reduced total cost of ownership for edge and distributed IT deployments.
• Q: Is the Vertiv Liebert PSI5 suitable for government procurement?
  A: Yes. The unit is TAA-compliant, making it eligible for applicable government and regulated procurement processes while meeting stringent compliance requirements.
• Q: What kind of runtime can I expect at different loads?
  A: Runtime varies with the level of load on the UPS. At lighter loads, runtime is longer, while higher loads approach the rated capacity of 1350W. For precise runtime estimates, refer to the product’s performance data or use vendor-provided runtime calculators that consider your specific load profile.
• Q: Can I deploy this UPS in a rack and in a standalone tower?
  A: Yes. The Liebert PSI5 is designed for flexible deployment in either rack-mmount or tower configurations, enabling seamless integration into diverse IT environments and space-constrained edge sites.
• Q: What kind of protection and monitoring options does it offer?
  A: The PSI5 provides essential power protection for connected equipment with clear status indicators and battery health information. It supports proactive monitoring and alerting to help IT teams detect issues early and respond quickly to power disturbances, outages, or battery degradation.
• Q: How long is the warranty and what does it cover?
  A: The unit includes a five-year advanced replacement warranty, covering hardware defects and rapid replacement to minimize downtime, giving you confidence in long-term reliability and support.