Li90 3-Phase Lithium UPS – Integrated UPS for Electrical Room Modernization (10–30kVA)

The Xtreme Power Li90 is designed to replace legacy three-phase UPS systems with a compact, integrated lithium platform that simplifies deployment and enables lifecycle-driven infrastructure planning.

Key Specifications

• 10 / 20 / 30 kVA
• 208/120V three-phase
• Online double-conversion topology
• Integrated Lithium Iron Phosphate (LiFePO₄) batteries
• Unity output power factor (1.0)
• Up to 94.5% online efficiency (99% ECO mode)
• Integrated maintenance bypass
• Up to 50 °C operation (derated above 40 °C)
• 4.3” color touchscreen interface

Datasheet:
https://xpcc.com/li90-flyer/

Learn more:
https://xpcc.com/lithium-ups-guide/

Integrated Lithium UPS Architecture

Li90 defines the category of integrated lithium three-phase UPS systems for infrastructure modernization.

Traditional three-phase UPS systems rely on external VRLA battery cabinets, increasing footprint, installation complexity, and ongoing maintenance exposure. Li90 replaces this architecture by integrating lithium batteries within the UPS cabinet.

This approach:

• Eliminates external battery enclosures
• Reduces installation complexity
• Improves service accessibility
• Enables higher system density within electrical rooms

The result is a simplified, modernized electrical room aligned with long-term infrastructure planning.

Where Li90 Fits

Li90 operates as the facility-level lithium UPS platform, replacing legacy centralized UPS systems while supporting downstream distributed infrastructure.

Within the Xtreme Power architecture:

• J60 / J60C → device and shallow rack protection
• J90 → high-density rack UPS
• Li90 → facility-level centralized UPS (this platform)
• M90U → modular UPS for scalable capacity and redundancy

This creates a coordinated architecture from edge protection through centralized facility power.

Key Advantages of Li90

Li90 is engineered for facilities where lifecycle cost, maintenance exposure, and electrical room constraints are primary design considerations.

• Integrated lithium battery system eliminates external battery cabinets
• Reduced maintenance compared to VRLA-based UPS systems
• Compact cabinet footprint for space-constrained electrical rooms
• High temperature operation up to 50 °C
• Predictable long-term lifecycle performance
• Up to 15-year battery life in ideal operating conditions

Li90 vs Traditional VRLA UPS Systems

The primary distinction between Li90 and conventional UPS platforms is the elimination of external battery systems.

VRLA-based systems require:

• External battery cabinets
• Periodic battery replacement (typically 3–5 years)
• Increased maintenance and service complexity

Li90 integrates lithium batteries within the UPS cabinet, reducing footprint, simplifying installation, and minimizing lifecycle maintenance requirements.

Li90 vs Other Three-Phase UPS Platforms

Detailed comparisons:
https://xpcc.com/li90-ups-comparisons/

Replace Eaton, APC, and Vertiv UPS Systems

Li90 is commonly deployed to replace legacy three-phase UPS systems in infrastructure modernization projects.

Typical replacement scenarios include:

• Eaton 9355 UPS systems approaching battery replacement
• Eaton 93PM UPS installations with rising maintenance cost
• APC Galaxy VS UPS systems using external battery cabinets
• Vertiv Liebert EXS UPS platforms in space-constrained environments

Li90 enables modernization by eliminating external batteries, reducing maintenance exposure, and improving system density—often without requiring major changes to upstream electrical infrastructure.

Explore comparisons:
https://xpcc.com/li90-ups-comparisons/

Lifecycle and Maintenance Advantage

Li90 reduces long-term operational burden by extending battery service life and minimizing replacement cycles. In ideal operating conditions, battery life can reach up to 15 years.

Compared to VRLA systems, this improves performance predictability, reduces service intervention, and supports long-term infrastructure planning without recurring battery replacement events.

Typical Deployment Environments

Li90 is deployed in facilities undergoing electrical infrastructure modernization, particularly where maintenance reduction and space optimization are key drivers.

Common applications include electrical room upgrades, battery replacement avoidance programs, space-constrained UPS replacements, and centralized power systems supporting industrial, healthcare, telecommunications, and edge infrastructure.

Related applications:

• https://xpcc.com/data-center-ups/
• https://xpcc.com/ups-for-industrial-automation/
• https://xpcc.com/ups-for-edge-data-centers/
• https://xpcc.com/industrial-lithium-ups/

Capacity Guidance

Capacity selection is based on facility load and continuity requirements:

• 10 kVA → distributed industrial and edge loads
• 20 kVA → healthcare, telecom, and mixed-use infrastructure
• 30 kVA → centralized facility systems

Runtime should be aligned with outage duration, redundancy strategy, and facility-level continuity objectives.

UPS sizing tool:
https://xpcc.com/selector

Xtreme Power Three-Phase UPS Portfolio

Li90 serves as the modernization platform within the three-phase UPS portfolio:

• Li90 → integrated lithium UPS for modernization
• E91 → traditional VRLA-based UPS systems
• M90U → modular UPS for scalable capacity and redundancy

Related platforms:
https://xpcc.com/products/e91/
https://xpcc.com/products/m90u/

Technical Summary

• Topology: Online double conversion
• Capacity: 10–30 kVA
• Voltage: 208/120V three-phase
• Battery: Integrated LiFePO₄
• Efficiency: Up to 94.5% online / 99% ECO
• Operating Temperature: Up to 50 °C
• Bypass: Integrated maintenance bypass
• Display: 4.3” touchscreen
• Certifications: UL 1778, UL 1973, UN 38.3
• Warranty: Startup + 2-year labor; 5-year battery

Plan With Confidence

Xtreme Power Conversion supports facility engineers, electrical consultants, and infrastructure planners in modernizing UPS infrastructure with reduced lifecycle cost, improved density, and simplified maintenance.

Phone: (800) 582-4524
Email: sales@xpcc.com