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Rectangular sealed lead-acid battery block with two cells and TAA label

Battery Technology Inc.

Battery Technology Inc. APCRBC124-TAA 12V 2-Cell Lead Acid UPS Replacement Battery

SKU CH-2V4J-DG88V

12 V, two-cell lead-acid battery replaces APCRBC124 and RBC124 in BR1200G and BR1300G UPS units

  • 12 V lead-acid chemistry delivers reliable backup power
  • Two-cell design fits UPS units requiring 12 V 124 format
  • TAA-compliant construction meets government procurement standards
  • Replaces APC RBC124 cartridge for direct drop-in installation
  • Compatible with BR1200G and BR1300G series UPS models

UPS replacement battery

The Battery Technology Inc. APCRBC124-TAA is a 12 V two-cell sealed lead-acid unit built to fit compatible UPS systems. It serves IT administrators and facilities teams who need a direct swap for depleted cells in rack or tower power-protection gear.

Sustained load behaviour

The lead-acid chemistry delivers steady voltage during extended discharge cycles typical of server-room outages. Internal resistance remains stable across repeated charge-discharge events, so hold-up time does not degrade sharply after the first few deep cycles.

Upgrade context

This module replaces the APCRBC124 and RBC124 cartridges used in BR1200G and BR1300G series UPS units. The change is worth it when the original pack no longer reaches rated runtime or when TAA-compliant sourcing becomes a procurement requirement.

Highlights

  • 12 V lead-acid chemistry delivers reliable backup power
  • Two-cell design fits UPS units requiring 12 V 124 format
  • TAA-compliant construction meets government procurement standards
  • Replaces APC RBC124 cartridge for direct drop-in installation
  • Compatible with BR1200G and BR1300G series UPS models

Specifications

BrandBattery Technology Inc.

Questions about this item

Does the 12 V lead-acid pack generate noticeable heat or noise during continuous UPS operation?

The sealed lead-acid cells run silently and produce only minimal warmth under normal float charge; no fan or moving parts are involved.

Which UPS models must I already own for this APCRBC124-TAA pack to fit and connect correctly?

It is a direct replacement for APC units including BR1200G-AR, BR1200G-FR, BR1200G-GR, BR1200G-RS, BR1200GI, BR1300G and any UPS that takes the APCRBC124 or RBC124 cartridge.

Will the 12 V 2-cell cartridge work alongside the original battery electronics in an older BR1200G series UPS?

Yes, the pack matches the voltage and form factor of the factory cartridge, so the existing charger and monitoring circuitry recognise it without modification.

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