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Two sealed 12V lead-acid battery cartridges in plastic housing

PowerWarehouse

PowerWarehouse 2XRBC4SLA421 UPS Replacement Battery 12V 2 Pack for APC SC620

SKU CH-KA1Z-DHND6

Two 12 V lead-acid cartridges replace the APC SC620 UPS battery pack

  • CompatibilityFits: APC SC620
  • Ready-to-install 2-pack for APC SC620 UPS
  • 12 V sealed lead-acid cells deliver reliable backup power
  • 100 % compatibility guaranteed with original cartridge #421
  • One-year replacement warranty protects your investment

Direct replacement for APC SC620 UPS units

This two-pack of 12 V lead-acid cartridges is built to match the original RBC4 specification for the APC SC620 uninterruptible power supply. Each battery is verified for 100 % compatibility with the OEM equipment, giving server administrators a ready-to-install spare set that restores full runtime without configuration changes. The sealed design fits the existing battery compartment and connects with the standard terminals.

Steady voltage delivery during extended outages

Under continuous discharge the cells maintain a stable output curve rather than collapsing after the initial minutes, so connected servers stay online long enough for graceful shutdown scripts to complete. The lead-acid chemistry handles repeated deep cycles with minimal capacity loss, and the one-year replacement warranty covers any unit that deviates from rated performance during that period.

Highlights

  • Ready-to-install 2-pack for APC SC620 UPS
  • 12 V sealed lead-acid cells deliver reliable backup power
  • 100 % compatibility guaranteed with original cartridge #421
  • One-year replacement warranty protects your investment

Specifications

BrandPowerWarehouse
Model2XRBC4SLA421
CompatibilityFits: APC SC620

Questions about this item

How much heat or noise does the 12V lead-acid cartridge produce when running continuously?

The sealed lead-acid cells generate no fan noise and only minimal warmth during normal float charging; they are designed for quiet, continuous operation inside the APC SC620.

What must I already own for this 2-pack cartridge #421 to work?

You need an APC SC620 UPS that accepts cartridge #421; the two 12V batteries install directly into that unit without extra cables or adapters.

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