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Two sealed lead-acid batteries in black plastic housing, rectangular block shape

CyberPower

CyberPower RBC7-CP UPS Replacement Battery 2x 12V 18Ah Sealed Lead-Acid

SKU CH-F58S-3B589 MPN RBC7-CP

Two user-replaceable 12 V 18 Ah sealed lead-acid batteries restore UPS runtime and weigh 21.5 lbs

  • Product typeBattery
  • DetailsNumber of batteries: 2 Battery size: 12 V/18Ah Battery type:
  • Product dimensions6.0 in × 6.8 in × 7.2 in
  • Product weight21.5 lb (9.75 kg)
  • In the boxBattery Kit and Installation Guide
  • Reliable backup power from dual 12 V 18 Ah sealed lead-acid cells
  • Ready for immediate use with user-replaceable design and included installation guide
  • Fits tight UPS compartments measuring 6.0 x 6.8 x 7.2 inches
  • Consistent performance across 32 to 104 °F and 0 to 90 % humidity
  • Manageable 21.5 lb weight simplifies handling during battery swaps

Replacement Cartridge for UPS Systems

The CyberPower RBC7-CP is a sealed lead-acid battery cartridge designed to restore backup power to compatible UPS units. It contains two 12V 18Ah batteries factory-assembled into a single user-replaceable module. The cartridge arrives new and includes an installation guide for straightforward replacement.

Fits Standard UPS Battery Bays

The cartridge measures 6.0 by 6.8 by 7.2 inches and weighs 21.5 lbs, matching the form factor of the original RBC7 pack. No soldering or external wiring is required; the module slides into the UPS battery compartment and connects with the existing terminals. Operating limits are 32 to 104 °F and zero to ninety percent relative humidity.

Ideal for Scheduled UPS Maintenance

This pack suits administrators refreshing aging batteries in supported CyberPower UPS models. It is not intended for units requiring a different voltage, capacity or physical footprint, nor for builders seeking lithium chemistry or hot-swappable individual cells.

How it compares

Measured against everything we stock in UPS Replacement Batteries, at today’s prices. Recalculated every night.

Price $148.99
Pricier than about 82% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameCyberPower
Model nameRBC7-CP
Product typeBattery
Size & build
Product dimensions6.0 in × 6.8 in × 7.2 in
Product weight21.5 lb (9.75 kg)
Shipping weight10.43 kg
Package size273 × 254 × 229 mm
In the box
In the boxBattery Kit and Installation Guide

Questions about this item

How long will the 18 Ah sealed lead-acid cells sustain a typical UPS load before voltage drops?

Runtime depends on the connected UPS model and the load it draws; the cartridge supplies two 12 V 18 Ah batteries wired for the UPS design.

Does the 21.5 lb cartridge generate noticeable heat or fan noise during continuous operation?

The batteries themselves are passive and produce no noise; heat stays within the 0–40 °C operating range when the UPS ventilation is unobstructed.

Which UPS models accept this RBC7-CP cartridge without extra hardware?

The cartridge is a direct user-replaceable fit for the CyberPower UPS units that list RBC7-CP as their specified replacement battery kit.

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