P91Li UPS – Rack/Tower Lithium-Ion Online UPS with Up to 15-Year Battery Life

1000 VA – 3000 VA | 120 VAC | Online Double Conversion | High-Temperature Operation

The Xtreme Power P91Li is a high-performance 120 V online double-conversion lithium UPS designed for distributed IT, edge, retail, AV, and enterprise environments where uptime, flexibility, and long battery life are essential. It delivers continuous, conditioned AC power with zero transfer time to protect servers, network infrastructure, and other sensitive electronics.

Powered by advanced Lithium Iron Phosphate (LiFePO₄) batteries, the P91Li is designed for up to 15 years of calendar life or 3,000–5,000 charge/discharge cycles under ideal operating conditions, significantly extending service life compared to traditional lead-acid UPS systems. The platform supports ambient operation up to 50 °C (122 °F); output derating applies above 40 °C (104 °F) to maintain reliability and thermal margins.

Its rack/tower convertible design, integrated management capabilities, and scalable runtime options make the P91Li well suited for modern IT infrastructures requiring remote visibility and efficient power protection.

Battery Runtime & Extended Runtime Options

The P91Li supports optional external battery packs for extended runtime configurations.

For detailed runtime data, refer to the
P91Li Product Flyer

Key Features & Benefits

Online Double Conversion UPS
Provides continuous, conditioned AC power with zero transfer time for mission-critical loads.

Rack/Tower Convertible Design
Deploys as a rackmount or freestanding tower to adapt to evolving infrastructure needs.

High-Temperature Operation
Designed for reliable operation up to 50 °C (122 °F); output derating applies above 40 °C (104 °F).
Learn more: High-Temperature UPS

Long-Life LiFePO₄ Battery
Designed for up to 15 years or 3,000–5,000 cycles under ideal operating conditions, delivering significantly longer service life than VRLA batteries.
Learn more: UPS Battery Technologies

Remote Monitoring & Control
Integrated Web/SNMP and optional management cards enable remote monitoring, alerts, and control.

Flexible Runtime Options
External battery packs allow runtime scaling to match application requirements.

TAA-Compliant Design
Approved for U.S. federal, public-sector, and regulated deployments.

6-Year Warranty
Covers UPS electronics and lithium batteries in the U.S. & Canada; reduced coverage at elevated temperatures.

Tip: Expand Outlet-Level Control with SPDU

Tip: Pair the SPDU Smart Power Distribution Unit with the P91Li to add switched and metered-by-outlet control, enabling remote reboot, sequencing, and per-outlet monitoring for rack and AV installations.

Product Snapshot

Derating is application-dependent; consult specifications for allowable load vs. temperature.

Applications

The P91Li UPS is ideal for environments requiring resilient 120 V power protection with flexible deployment:

• Enterprise IT & Data Closets – Protect servers, storage, and infrastructure
• Networking & Security – Backup for switches, routers, firewalls, and VoIP systems
• Retail & POS – Reliable power for checkout systems and edge applications
• Pro AV & Digital Signage – Power continuity for AV racks and controllers
• Education & Healthcare – Backup for classrooms, labs, and point solutions
• Edge & Distributed IT – Protect remote and unattended installations

Compare the P91Li to Other UPS Platforms

Evaluate the P91Li against competitive and internal UPS platforms by topology, runtime, battery life, and total cost of ownership.

View all P91 UPS comparisons:
https://xpcc.com/p91-li-ups-comparisons

Contact Us

The Xtreme Power P91Li UPS combines online double-conversion protection, rack/tower flexibility, long-life LiFePO₄ batteries designed for up to 15 years or 3,000–5,000 cycles, clearly defined high-temperature derating, and expandable outlet-level control—delivering dependable 120 V power protection for modern IT and edge environments.

Contact Us | View All Products | UPS Selector
(800) 582-4524
sales@xpcc.com