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A set of four sealed lead-acid batteries in a cardboard box

RefurbUPS

RefurbUPS ONEAC ON900J-SN UPS Replacement Battery Kit 4×6V12Ah

SKU CH-TPXP-M9QQQ

Kit of four 6 V 12 Ah sealed lead-acid batteries replaces the ONEAC ON900J-SN UPS cartridge

  • TypeKit/Package
  • Weight20
  • Four 6 V 12 Ah batteries deliver reliable backup power
  • Kit matches ONEAC ON900J-SN UPS for direct replacement
  • Factory-fresh sealed lead-acid cells ensure consistent performance
  • Includes step-by-step installation instructions for easy swap
  • 20 kg package ships complete with all four modules

Compatible replacement kit

The RefurbUPS ONEAC ON900J-SN kit supplies four 6V12Ah sealed lead-acid batteries designed as a direct replacement for the original UPS cartridge. It targets administrators who need to restore runtime on compatible OneAC units without sourcing individual cells.

Sustained discharge behaviour

Each cell is rated for high-rate discharge, so the string delivers steady current during extended outages rather than only brief peaks. The 12Ah capacity per block supports the load profile the original cabinet was engineered for.

Installation notes

The package includes comprehensive replacement instructions that guide the installer through the cartridge swap step by step. The 20kg total weight means two people or a trolley are advisable when moving the kit into the rack.

Highlights

  • Four 6 V 12 Ah batteries deliver reliable backup power
  • Kit matches ONEAC ON900J-SN UPS for direct replacement
  • Factory-fresh sealed lead-acid cells ensure consistent performance
  • Includes step-by-step installation instructions for easy swap
  • 20 kg package ships complete with all four modules

Specifications

BrandOneAC
SeriesOneAC Batteries
TypeKit/Package
Weight20

Questions about this item

How much heat do the four 6 V 12 Ah batteries generate during continuous operation?

The kit uses sealed lead-acid cells that produce minimal heat under normal float charge; typical warm-up stays within the UPS enclosure design limits.

What existing UPS hardware is required for this replacement kit to function?

A ONEAC ON900J-SN UPS unit is required; the four batteries slot directly into its internal cartridge bay.

Will the 6 V 12 Ah cells work alongside the original charger electronics in an older ON900J-SN?

Yes, the high-rate discharge SLA chemistry matches the factory specifications so the original charging circuit manages them correctly.

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