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Rectangular sealed lead-acid battery cartridge, black plastic casing, 3.25 by 8.375 by 21 inches, 38 lbs

CyberPower

CyberPower RBC43-CP 48V 5.5Ah UPS replacement battery

SKU CH-927Q-WPN08 MPN RBC43-CP

A user-replaceable 48 V 5.5 Ah sealed lead-acid battery cartridge weighing 38 lbs for compatible CyberPower UPS units

  • Product typeBattery
  • DetailsNumber of batteries: 1 Battery size: 48 V/5.5Ah Battery type
  • Product dimensions3.25 in × 8.375 in × 21 in
  • Product weight38 lb (17.2 kg)
  • In the boxBattery Kit and Installation Guide
  • Ready for installation with user-replaceable design
  • 48 V 5.5 Ah sealed lead-acid delivers reliable backup power
  • Single cartridge weighing 38 lbs fits existing UPS chassis
  • Operates from 32 °F to 104 °F in up to 90 % humidity
  • Includes battery kit and installation guide for quick setup

Compatible UPS battery cartridge

The CyberPower RBC43-CP is a sealed lead-acid replacement cartridge rated at 48 V and 5.5 Ah. It is designed for user installation in supported CyberPower UPS units. The kit includes the battery pack and an installation guide.

Voltage and capacity match

The single specification that decides fit is the 48 V 5.5 Ah rating. Only UPS models that specify this exact voltage and capacity will accept the cartridge. The sealed lead-acid chemistry and user-replaceable design are secondary to the electrical match.

Suits owners of matching CyberPower UPS units

This cartridge suits administrators maintaining compatible CyberPower UPS hardware that requires a 48 V 5.5 Ah sealed lead-acid pack. Buyers whose UPS calls for a different voltage, capacity or form factor should look at other replacement cartridges.

How it compares

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

Price $293.99
Pricier than about 90% of the 3,915 comparable items (median $39.99).

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Specifications

Product
Brand nameCyberPower
Model nameRBC43-CP
Product typeBattery
Size & build
Product dimensions3.25 in × 8.375 in × 21 in
Product weight38 lb (17.2 kg)
Shipping weight18.26 kg
Package size584 × 330 × 191 mm
In the box
In the boxBattery Kit and Installation Guide

Questions about this item

How long will the 48V 5.5Ah capacity keep my UPS running during an outage?

Runtime depends on the load your UPS is supporting; the 5.5 Ah rating at 48 V gives the total energy the cartridge can deliver before the UPS shuts down.

Does the sealed lead-acid chemistry limit the charge voltage or temperature range I can use?

The cartridge is rated for 0–40 °C operating temperature and 0–90 % relative humidity; stay inside those limits for normal service life.

Will the 3.25 x 8.375 x 21 inch cartridge fit in my CyberPower UPS without modification?

It is designed as a user-replaceable cartridge for compatible CyberPower units; verify your UPS model accepts the RBC43-CP before installation.

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