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Rectangular 12V lead-acid UPS battery pack, four cells, matte black casing

Battery Technology Inc.

Battery Technology Inc. APCRBC133-TAA 12V 4-Cell Lead Acid UPS Replacement Battery

SKU CH-1TKJ-F1ZNX

12 V 4-cell lead-acid battery replaces APCRBC133 and fits SMC2000I and SMT1500R2 UPS models

  • TAA-compliant design meets government procurement standards
  • 12 V, 4-cell lead-acid chemistry delivers reliable backup power
  • Direct replacement for APC RBC133 and APCRBC133 cartridges
  • Compatible with SMC2000I-2U, SMT1500R2I and related UPS models
  • Two-year manufacturer warranty backs long-term performance

Direct Replacement for Select APC UPS Units

The Battery Technology Inc. APCRBC133-TAA is a 12 V, four-cell sealed lead-acid battery built to replace the APC RBC133 cartridge. It fits the SMC2000I-2U, SMC2000I-2URS, SMT1500R2-NMC, SMT1500R2I-6W, SMT1500R2I-AR and SMT1500R2X122 models. TAA compliance makes it eligible for federal procurement channels.

Voltage and Chemistry Define the Service Window

A 12 V lead-acid pack delivers the runtime engineered for the original UPS; it cannot extend backup time beyond the unit's designed load curve. Capacity fades with age and temperature, so plan replacement before the cells reach end-of-life. The sealed construction allows upright or horizontal mounting inside the existing chassis.

Swaps the OEM RBC133 Cartridge Without Rewiring

This unit replaces the factory RBC133 module directly, using the same connectors and form factor. The upgrade is worth it when the original battery no longer holds charge or when a maintenance schedule calls for fresh cells. It is not for users needing lithium chemistry, higher voltage strings or hot-swappable trays not supported by the host UPS.

Highlights

  • TAA-compliant design meets government procurement standards
  • 12 V, 4-cell lead-acid chemistry delivers reliable backup power
  • Direct replacement for APC RBC133 and APCRBC133 cartridges
  • Compatible with SMC2000I-2U, SMT1500R2I and related UPS models
  • Two-year manufacturer warranty backs long-term performance

Specifications

No published specifications for this item yet.

Questions about this item

Which BTI battery replaces my APCRBC133 unit?

The APCRBC133-TAA is a direct 12 V 4-cell lead-acid replacement for the APCRBC133 and RBC133 cartridges used in compatible APC UPS models.

What runtime can I expect from this 12 V pack in my Smart-UPS?

Runtime depends on the connected load; the pack restores the original capacity of the SMT1500R2 or SMC2000I series UPS so backup time matches the factory specification.

Does the TAA-compliant label change the electrical fit in my rack UPS?

No; TAA compliance only certifies country-of-origin eligibility for government contracts — voltage, connector layout and form factor remain identical to the standard RBC133 cartridge.

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