Spec score 8.7
1500 VA, 1350 Watts, rack, Line interactive
+1500VA and 1350W capacity for larger equipment loads
+Lithium-ion battery for a lighter, longer-lived pack
+Pure sine wave output for sensitive electronics
$1,415.99-10%Was: $1,575.99
as of 11/04/2026 11:08 PST - DetailsProduct details
Vertiv Liebert PSI5-1500RT120LI Lithium-Ion UPS 1500VA Battery Backup 2U | Line Interactive Battery Backup, Surge
$1,415.99as of 11/04/2026 11:08 PST - Details
View on AmazonSpec score8.7
Pros
+1500VA and 1350W capacity for larger equipment loads
+Lithium-ion battery for a lighter, longer-lived pack
+Pure sine wave output for sensitive electronics
+2U rack form factor saves rack space
+Surge protection included
Compared with the 6 UPS Battery Backups on this page+1500 va: the highest va of the 6 here
+1350 watts: the most watts of the 6 here
+Lithium battery: only 3 of 6 here have one
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