Description
Vertiv Liebert PSI5 UPS – 1100VA Line Interactive Rackmount – PSI5-1100RT120 — Replacement Battery
When the Liebert PSI5 UPS – 1100VA Line Interactive Rackmount – PSI5-1100RT120 starts reporting a depleted battery, downtime risk climbs by the hour. This replacement set restores nominal runtime in a single service window.
Fits These UPS Units
- Vertiv Liebert PSI5 UPS – 1100VA Line Interactive Rackmount – PSI5-1100RT120
Battery Details
- Type: Sealed lead-acid (VRLA) — maintenance-free, no venting required
- Performance: Engineered for the discharge curves typical of UPS backup operation
- Shelf life: Low self-discharge rate maintains capacity through long standby
- Durability: Vibration-tolerant, suitable for industrial environments
- Safety: Spill-proof, sealed construction certified to UL standards
Quality & Compliance
- Manufactured to UL / CE standards
- Brand new from production — fresh cells, never used
- Pre-shipment QA verified
- Covered by Vertiv manufacturer warranty
In the Box
- One Vertiv UPS unit for the Vertiv Liebert PSI5 UPS – 1100VA Line Interactive Rackmount – PSI5-1100RT120
- Installation guidance (see below)
Before You Install
Plan a brief service window. While many Liebert PSI5 UPS – 1100VA Line Interactive Rackmount – PSI5-1100RT120 units permit hot-swap, the safest sequence is to transfer load to grid or bypass first.
Backed by Vertiv manufacturer warranty + nationwide service support
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Independent Canadian Vertiv / Liebert UPS service specialists since 2012.

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