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Rectangular black metal 2U rackmount UPS with front LCD display and six rear outlets

Vertiv

Vertiv PSI5-1500RT120LI 1500VA 1350W 120V 2U UPS

SKU CH-05QW-8JP0H MPN PSI5-1500RT120LI

Lithium-ion UPS delivers 1500 VA / 1350 W with 6 NEMA 5-15R outlets, 2-hour recharge and 10-year battery life in a 2U rack or tower form factor

  • Voltage version120VAC Default; 100/110/115/125VAC User Selectable
  • AC input voltage75-146 VAC
  • Input line frequency55 to 65 Hz (57 to 63 Hz Battery to Normal Comeback)
  • Power inputNEMA 5-15P
  • Volt-ampere rating1500 VA
  • Power rating1350 W

Model PSI5-1500RT120LI

  • Lithium-ion battery lasts up to 10 years before replacement
  • Half-load runtime of 18 minutes keeps critical gear running longer
  • Recharges to 90 percent in just 2 hours
  • 2U rack or tower form factor fits dense server racks
  • Surge protection meets ANSI C62.41 Category A Level 3

Product Identity

The Vertiv PSI5-1500RT120LI is a 1500VA 1350W line-interactive UPS with lithium-ion batteries. It fits IT managers protecting rack-mounted servers or network gear in a 2U space, and also suits tower deployments where floor space is limited.

Bundle Impact

Six NEMA 5-15R outlets include programmable sockets that let administrators shed non-critical loads during extended outages. A USB port enables direct monitoring, while the lithium-ion pack delivers a 10-year design life and hot-swap replacement without powering down connected equipment.

Pre-Installation Checks

Verify your facility supplies 75-146 VAC at 55-65 Hz and that the NEMA 5-15P input plug matches your branch circuit. Confirm the 3.38" x 17.24" x 16.18" chassis fits your rack or shelf, and ensure the operating environment stays between 32°F and 104°F with 20-90% non-condensing humidity.

How it compares

Measured against everything we stock in Uninterruptible Power Supplies (UPS), at today’s prices. Recalculated every night.

Price $1,780.99
Pricier than about 71% of the 1,153 comparable items (median $948.99).

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Specifications

Product
Brand nameLiebert
Product linePSI5
Model namePSI5-1500RT120LI
Ports & slots
Communication portsUSB
Power
Voltage version120VAC Default; 100/110/115/125VAC User Selectable
AC input voltage75-146 VAC
Input line frequency55 to 65 Hz (57 to 63 Hz Battery to Normal Comeback)
Power inputNEMA 5-15P
Volt-ampere rating1500 VA
Power rating1350 W
Voltage output120 VAC Default; 100/110/115/125 VAC User Selectable
Power outlets6
Battery typeLithium Ion
Runtime on batteryFull load: 7.5 min
Half load: 17.7 min
Battery charge time2hrs to 90%
Size & build
Rack mounting2U Rack / Tower
Product dimensions3.38 in × 17.24 in × 16.18 in
Product weight28.3 lb (12.8 kg)
Shipping weight16.33 kg
Package size584 × 559 × 254 mm
Environment & compliance
Regulatory approvalsUL 1642 (LiFe cells), UL 1973 (LiFe pack), UL 1778, CSA 22.2 no. 107.3
Temperature rangeOperating Temperature,°F (°C): 32° to 104° (0° to 40°)
Storage Temperature °F (°C): 5° to 120° (-15° to 50°)
Humidity range20% - 90%, non-condensing
More details
Surge protectionANSI C62.41, Category A, Level 3

Other versions of this model

5 more in the same range

Questions about this item

How often will the lithium-ion battery pack need replacement in the PSI5-1500RT120LI?

The lithium-ion battery is rated for a 10-year service life, so replacement is not expected for a decade under normal operating conditions.

What is the maximum load the 1350-watt output can sustain before the UPS switches to battery?

The unit supports up to 1350 watts continuous; loads above that level will cause an immediate transfer to battery power.

How much heat does the 2U rack unit produce when running at full load all day?

The UPS operates up to 104 °F (40 °C) ambient; internal heat output scales with the connected load but stays within the rated temperature envelope.

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