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Vertiv™ Liebert® PSI5 Lithium-Ion UPS

Lithium-ion is a giant leap forward in UPS battery technology and the Liebert® PSI5 Lithium-Ion line interactive UPS is at the top of the class. It delivers up to 50% lower total cost of ownership vs. comparable VRLA battery models, in a smaller, lighter package. The Liebert® PSI5 UPS offers faster recharge times, up to 10x more charge/discharge cycles, and can operate at higher temperatures with no degradation in performance. And it comes with a 5-year warranty, making it a worry-free option.

Key Benefits
Lithium-ion batteries (LIB) provide lower total cost of ownership than comparable VRLA UPSs
Fewer battery replacements – LIB last 2-3 times longer than VRLA batteries
5-year advanced replacement no-hassle warranty
Longer Runtime – up to 9min at full-load
Remote Management capability and Free Power Management Software via optional networking cards
Quicker recharge times – the LIB in the Liebert® PSI5 UPS charge to 90% in 2 hours or less
10x More Discharge Cycles – LIB can endure up to 10x more discharge/charge cycles than VRLA batteries
Better Power Density – LIB provide more power in smaller spaces than VRLA batteries
Best Suited For:
  • Education
  • Banking, Financial and Insurance
  • Government
  • Healthcare
  • Retail and Wholesale
Warranty: Vertiv backs all Liebert® PSI5 Lithium-Ion UPS systems with 5-year advanced replacement warranty including battery. This covers all shipping fees and includes next-day delivery, which ensures customers will receive their replacement unit prior to returning their aged unit.
Tools & Selectors
Select, compare, or configure UPS systems and models
TCO Calculator
Calculate total cost of ownership for Lithium-ion UPS vs. VRLA
Runtime Tool
Get detailed runtime information for various load levels
Compare UPS Products
Interactive product selector for single-phase UPS

The Liebert® PSI5 Lithium-ion UPS is ideally suited to protect critical infrastructure in edge or distributed IT applications. Lithium-ion batteries have a life expectancy twice that of VRLA batteries – up to 10 years. That translates to fewer (if any) battery replacements over the lifespan of the UPS, which means savings on batteries as well as the labor to install them – an especially important issue at remote locations with few or no IT personnel on site. It adds up to a 50% lower total cost of ownership vs. VLRA batteries. The Liebert PSI5 Lithium-ion line interactive UPS includes automatic voltage regulation (AVR) technology, which protects against utility voltage fluctuation to extend battery life by maximizing time on utility power, and provides premium protection from power disturbances. In battery mode, the Liebert PSI5 UPS delivers pure sine wave output to protect sensitive servers and networking equipment. With up to 20 min. of runtime at half load and 9 min. at full load – more than comparable competing models – the Liebert PSI5 Lithium-ion UPS provides plenty of runtime during an outage for an orderly shutdown. It comes with a rotating LCD display to allow both rack and tower configurations, provides real time information regarding UPS status and operating conditions, and supports remote monitoring. It's also highly energy efficient, delivering up to 97% efficiency at full load in normal operating mode. You can rest assured your business is protected with this Vertiv solution, which includes a 5-year full factory warranty. The Liebert PSI5 Lithium-ion UPS is a true low-maintenance, set-it-and-forget-it solution. Models with a capacity of 1500VA and below are not for sale in Vermont, Colorado, Washington.

Model Specifications Overview
PSI5-1500RT120LI, Vertiv™ Liebert® PSI5 Lithium-Ion UPS 1500VA/1350W 120V Line Interactive AVR
1500VA / 1350W   Nominal: 120VAC / Range: 75-146VAC   120VAC Default; 100/110/115/125VAC User Selectable   Up to 97.1% (Normal Mode)   Input: 5-15P; Ouput: 6 x 5-15R   3.4 in   17.2 in   16.2 in   28.3 lbs  
PSI5-2200RT120LI, Vertiv™ Liebert® PSI5 Lithium-Ion UPS 1920VA/1920W 120V AVR Rack/Tower
1920VA / 1920W   Nominal: 120VAC / Range: 75-146VAC   120VAC Default; 100/110/115/125VAC User Selectable   Up to 97.1% (Normal Mode)   Input: 5-20P or L5-20P; Output: 6x5-20R, 1x L5-20R   3.4 in   17.2 in   20.1 in   39.5 lbs  
PSI5-3000RT120LI, Vertiv™ Liebert® PSI5 Lithium-Ion UPS 3000VA/2700W 120V Line Interactive AVR
3000VA / 2700W   Nominal: 120VAC / Range: 75-146VAC   120VAC Default; 100/110/115/125VAC User Selectable   Up to 97.3% (Normal Mode)   Input: L5-30P; Ouput: 6 x 5-20R, 1 x L5-30R   3.4 in   17.2 in   24.8 in   53.5 lbs  
PSI5-1500MT120LI, Vertiv™ Liebert® PSI5 Lithium-Ion UPS 1500VA/1350W 120V AVR Mini Tower
1500VA / 1350W   Nominal: 120VAC / Range: 75-146VAC   120VAC Default; 100/110/115/125VAC User Selectable   Up to 97.1% (Normal Mode)   Input: 5-15P; Output: 6 x 5-15R   8.7 in   6.3 in   15.6 in   27.9 lbs  


Lower total cost of ownership, lithium-ion batteries last twice as long resulting in fewer battery replacements
5 year standard warranty on the UPS and batteries
Longer battery runtime and quicker battery recharge times
Eligible for the Vertiv™ Trade-In Program. Contact a Vertiv partner for discount rates and to calculate your savings


0.9 Output Power Factor delivers more usable power, saving space and costs 
2U Rack/Tower form factor, 1500VA Mini Tower and 1500-3000VA 2U Rack/Tower models available
Plug and play installation  
Up to seven battery-backed outlets 
Programmable outlets 
 Hot-swappable, user-replaceable batteries
Wide input voltage window to prolong battery life
Advance early warning of UPS system status issues 
USB communications for UPS status monitoring and management
SNMP support 
Optional Liebert® IntelliSlot™ IS-UNITY communications card for remote monitoring and control
Remote emergency shut down capability via EPO port

*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.

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Products Support Contacts

Showing contacts for Virginia, 20149, USA Change
Vertiv (Liebert Services)
+1 800 543 2378
610 Executive Campus Drive Westerville Ohio 43082 USA
Product areas of focus: Uninterruptible Power Supplies (UPS), Power Distribution, Thermal Management, Integrated Solutions, Racks and Containment

News & Insights

Edge Computing

Video: Vertiv™ Liebert® PSI5 Lithium-Ion UPS

The Vertiv™ Liebert® PSI5 Lithium-Ion UPS is designed to safeguard critical equipment in Edge and Distributed IT applications. The Liebert PSI5 Lithium-ion offers more than double the battery life of a traditional VLRA UPS, comes with a five year factory warranty, and can provide a TCO savings up to 50% or more. Available in North America through Local Vertiv Offices and distribution channels.


Outlining the Advantages of Lithium-ion Batteries for UPSs (and Dispelling One Myth)

From longer life, smaller size, lighter, faster recharge time and ability to withstand higher temperatures, lithium-ion batteries bring significant benefits to UPSs – including total cost of ownership (TCO) savings (up to 50% vs. lead acid batteries).


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