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A sealed 12 V battery cartridge in a plain box

RefurbUPS

RefurbUPS Powersure 500 UPS (PSP500MT3-120U) Compatible Replacement Battery Kit

SKU CH-EWP9-NKYK4

A replacement battery kit with one 12 V SLA cartridge for the Liebert PowerSure 500 UPS

  • TypeKit/Package
  • Weight6
  • Compatible kit restores UPS runtime with one 12V battery
  • High-rate discharge design delivers reliable backup power
  • Factory-fresh cells ensure consistent performance
  • Includes step-by-step installation instructions for easy replacement
  • Built for dependable operation in Liebert PowerSure 500 units

Compatible Kit for Powersure 500 UPS

This replacement battery kit is built for the Emerson-Liebert Powersure 500 UPS model PSP500MT3-120U. It supplies a single 12V7A high-rate discharge SLA battery that matches the original cartridge. The package includes comprehensive installation instructions for a straightforward swap.

Sealed Lead-Acid Chemistry Limits

The 12V SLA cell delivers reliable backup power but cannot be deep-cycled repeatedly without capacity loss. Runtime scales with the connected load, so heavy server draw will exhaust the reserve faster than light networking gear. Ambient temperature extremes also reduce effective service life.

Replaces Worn Factory Cartridge

Swap this kit in when the original battery no longer holds a charge or self-test alarms sound. The jump is worth it when uptime matters more than the cost of a new UPS unit. Buyers who need extended runtime beyond a single cartridge should look at higher-capacity UPS models instead.

Highlights

  • Compatible kit restores UPS runtime with one 12V battery
  • High-rate discharge design delivers reliable backup power
  • Factory-fresh cells ensure consistent performance
  • Includes step-by-step installation instructions for easy replacement
  • Built for dependable operation in Liebert PowerSure 500 units

Specifications

BrandLiebert PowerSure
SeriesLiebert PowerSure Replacement
TypeKit/Package
Weight6

Questions about this item

Should I choose the single-battery kit or a multi-battery pack for my Powersure 500?

This kit contains exactly one 12 V 9 Ah cartridge, which is the full complement required for the PSP500MT3-120U; no additional batteries are needed.

What runtime can I expect from the 12 V 9 Ah battery once installed in the UPS?

The 12 V 9 Ah high-rate cell restores the UPS to its original 500 VA runtime rating, delivering the same backup minutes the unit provided when new.

Does the battery connect through a standard terminal or a proprietary plug?

The cartridge uses the same connector layout as the original Liebert PSP500MT3-120U battery, so it plugs straight into the UPS without adapters.

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