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A single 12V 9Ah sealed lead-acid battery in a rectangular plastic case

RefurbUPS

RefurbUPS compatible battery kit 12V9A for Liebert Powersure 500 PSA500MT3-120U

SKU CH-EG2D-QVP6D

Compatible 12 V 9 Ah battery kit restores runtime to Liebert Powersure 500 UPS units

  • TypeKit/Package
  • Weight6
  • Compatible 12 V 9 Ah battery keeps your Liebert PSA500MT3-120U running
  • Single 12 V 9 Ah cartridge installs quickly with included instructions
  • Factory-fresh sealed lead-acid cell delivers reliable backup power
  • Designed for the PSA500MT3-120U model for exact fit
  • New condition ensures full rated capacity from day one

Compatible replacement battery kit

This RefurbUPS kit provides a 12V9A sealed lead-acid battery built for the Liebert Powersure 500 PSA500MT3-120U UPS. It restores backup power for connected servers and network equipment when the original cells wear out. The package includes factory-fresh batteries and comprehensive installation instructions. It is not for buyers who need a higher-capacity cartridge or a different voltage platform.

Replaces exhausted internal cells

Swapping this kit for the depleted original battery returns the UPS to its rated runtime for the PSA500MT3-120U unit. The jump is worth it when the UPS reports a battery fault, runtime drops sharply or the unit reaches its typical service interval. It does not upgrade the UPS to a larger VA rating or add extra battery bays.

Straightforward user installation

The cartridge is designed for tool-less removal and replacement inside the existing UPS chassis following the included guide. Most issues arise from forgetting to disconnect the UPS from mains power before opening the battery door or reversing the connector polarity. No firmware update or external charger is required.

Highlights

  • Compatible 12 V 9 Ah battery keeps your Liebert PSA500MT3-120U running
  • Single 12 V 9 Ah cartridge installs quickly with included instructions
  • Factory-fresh sealed lead-acid cell delivers reliable backup power
  • Designed for the PSA500MT3-120U model for exact fit
  • New condition ensures full rated capacity from day one

Specifications

BrandLiebert PowerSure
SeriesLiebert PowerSure Replacement
TypeKit/Package
Weight6

Questions about this item

Will the 12 V 9 A battery cartridge fit inside the Liebert Powersure 500 PSA500MT3-120U chassis?

Yes, the kit is built as a direct replacement cartridge for the PSA500MT3-120U so it matches the original battery compartment dimensions.

What is the installation step most people miss when swapping the PSA500MT3-120U battery?

Reconnect the battery terminals in the correct polarity order before closing the cover; the included instructions highlight this sequence.

How often should the 12 V 9 A SLA battery in the PSA500MT3-120U be replaced?

Plan on replacing the sealed lead-acid battery every three to five years, or sooner if runtime drops noticeably.

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