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APC

APC RBC4 UPS Replacement Battery 12 V 8.10 lbs

SKU CH-9THD-XDGE2 MPN RBC4

Maintenance-free sealed lead-acid battery with suspended electrolyte fits APC Back-UPS SC620 and SU620NET units

  • TypeBattery
  • SpecificationsBattery Type: Maintenance-free sealed Lead-Acid battery with
  • FeaturesBattery Characteristics: Maintenance-freeBattery Chemistry:
  • Dimensions3.90" x 3.70" x 5.90"
  • Weight8.10 lbs.
  • Maintenance-free design eliminates routine upkeep
  • Sealed lead-acid construction prevents leaks
  • Hot-swappable installation keeps UPS running
  • Compatible with Back-UPS SC620 and SU620NET models
  • Expected service life of 3 to 5 years

Direct Replacement for Select Back-UPS Units

The APC RBC4 is a 12 V maintenance-free sealed lead-acid battery designed to restore runtime to compatible UPS systems. It fits models including the SC620 and SU620NET. The unit is hot-swappable, allowing installation without powering down connected equipment. Expected service life ranges from three to five years under normal conditions.

Suitable for Restoring Existing UPS Runtime

This battery suits owners of the listed Back-UPS models who need to replace a depleted cell and return their unit to full backup capability. It is not intended for users seeking to expand runtime beyond the original specification or for those whose UPS requires a different RBC part number. Buyers should verify their UPS model against the compatibility list before purchasing.

12 V DC Output Voltage Determines Fit

The single specification that decides compatibility is the 12 V DC output voltage combined with the physical dimensions of 3.90 in by 3.70 in by 5.90 in. Only UPS units designed for this exact voltage and form factor will accept the RBC4. Confirm both values match the original battery label to ensure correct operation.

Highlights

  • Maintenance-free design eliminates routine upkeep
  • Sealed lead-acid construction prevents leaks
  • Hot-swappable installation keeps UPS running
  • Compatible with Back-UPS SC620 and SU620NET models
  • Expected service life of 3 to 5 years

Specifications

BrandAPC
ModelRBC4
TypeBattery
SpecificationsBattery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof
Expected Battery Life (years): 3 - 5
RBC Quantity: 1
FeaturesBattery Characteristics: Maintenance-freeBattery Chemistry: Lead AcidHot Swappable: YesMinimum Battery Life: 3 YearMaximum Battery Life: 5 YearOutput Voltage: 12 V DCHeight: 3.9" (99.1 mm)Width: 3.7" (94 mm)Depth: 5.9" (149.9 mm)Weight (Approximate): 3.67 kgLimited Warranty: 1 Year
Dimensions3.90" x 3.70" x 5.90"
Weight8.10 lbs.
Shipping weight4.09 kg
Package size231 × 185 × 130 mm

Questions about this item

Does the 12 V sealed lead-acid RBC4 generate noticeable heat or noise during continuous UPS operation?

The maintenance-free sealed lead-acid design runs silently with no moving parts, so it adds no audible noise and only minimal warmth during normal float charging.

What existing UPS models must I already own for this RBC4 to be a direct replacement?

It is built for APC Back-UPS units including the SC620, SU620NET, BP650, BP650PNP, BP650C, SUVS650 and SU620.

Will the 3.9" x 3.7" x 5.9" RBC4 fit the same battery tray as the original cartridge in those older Back-UPS models?

Yes, the dimensions and 12 V output match the factory cartridge, and the hot-swappable feature lets you swap it without shutting down the UPS.

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