Eaton RBC94‑2U – 48 VDC Replacement Battery Cartridge

Overview

The Eaton RBC94‑2U is a 2U UPS replacement battery cartridge comprised of a pre‑assembled set of sealed lead‑acid batteries configured to supply 48 VDC runtime support for select rack‑mount UPS systems. Infrastructure engineers and facilities teams deploy this battery pack during scheduled maintenance or when UPS internal batteries reach end‑of‑life, restoring original backup runtime capability.

This battery cartridge contains four 12 V sealed lead‑acid cells wired in series to achieve a 48 V DC battery string. It is maintenance‑free and leak‑proof, designed for straightforward installation into compatible UPS frames that accept 2U high battery modules. Runtime impact and expected lifespan depend on load and environmental conditions.

The RBC94‑2U fits into standard 19‑inch rack environments occupying 2 U of vertical space, aligning with UPS systems that support external or internal battery upgrades. Typical use cases include data center IDF/MDF racks, server rooms, and enterprise infrastructure closets where uptime continuity is required.

Integration with UPS units is purely electrical and mechanical; no network management functions are provided by the battery pack itself. Correct polarity and connector engagement are critical to ensure charger recognition and proper DC link connection. It is compatible with specific Eaton/Tripp Lite SmartPro UPS models that reference the RBC94‑2U battery cartridge in their parts list.

In practical deployment, technicians swap this cartridge during routine preventive maintenance cycles (typically every 3–5 years based on temperature and cycling) to maintain UPS runtime. Installation generally involves powering down the UPS to bypass mode, removing the access panel, unplugging the expended battery pack, and inserting the RBC94‑2U in the same orientation with provided connectors.

This battery cartridge should not be used in UPS families that do not list RBC94‑2U as compatible or in systems requiring hot‑swappable lithium chemistry modules. Also avoid mixing battery pack chemistries within the same UPS string, as this can create imbalance and safety hazards.

Key Features

• 48 VDC pre‑assembled replacement battery cartridge (4× 12 V cells)
• Fits 2U rack space in 19″ UPS environments
• Maintenance‑free sealed lead‑acid construction
• Compatible with select Eaton/Tripp Lite SmartPro UPS models
• Leak‑proof and rugged design for safe installation