APC RBC55 – UPS Replacement Battery Cartridge (12 V 17 Ah)

Overview

The APC RBC55 is a sealed, maintenance‑free replacement battery cartridge designed for restoring runtime in compatible APC Smart‑UPS and certain Back‑UPS systems. This module is deployed by IT power infrastructure teams and facility technicians during preventive maintenance or end‑of‑life battery replacement in UPS units. By replacing worn batteries with an RBC55 cartridge, UPS systems maintain backup power capability critical for supporting network equipment, servers, and storage systems during utility outages.

The cartridge contains a valve‑regulated lead‑acid (VRLA) battery with a 12 V output and approximately 17 Ah capacity (~816 VAh), suitable for line‑interactive UPS platforms in rack or tower configurations. Its spill‑proof, hot‑swappable design allows technicians to replace the battery without disconnecting loads or powering down protected devices, ensuring continuity of operations in enterprise and small business environments.

This replacement battery is typically installed in Smart‑UPS models such as 2200 VA and 3000 VA configurations where the RBC55 cartridge is specified. Installing a fresh RBC55 restores the UPS to its rated runtime profile and supports predictable performance during power disruptions.

A deployment example includes replacing the internal battery cartridge in a Smart‑UPS 2200 VA rack unit during a scheduled maintenance window to ensure sustained runtime for critical infrastructure. Due to its hot‑swappable capability, battery servicing can occur without interrupting protected loads.

This battery cartridge should not be used in UPS architectures that require higher voltage battery strings (e.g., Smart‑UPS with 24 V or 48 V battery systems) as those require different battery cartridges designed for their voltage and capacity.

Key Features

• 12 V VRLA UPS replacement battery cartridge
• ~816 VAh capacity for extended runtime
• Spill‑proof, maintenance‑free design
• Hot‑swappable for online battery replacement
• Restores UPS runtime in compatible models