Eaton BP48V48RT4U – 48V 4U Rack-Mount External UPS Battery Pack

Product Overview

The Eaton BP48V48RT4U is a 48V external battery pack engineered to extend the runtime of compatible 48V DC rack-mount UPS systems in data center, network closet, and commercial facility deployments. Built for the Eaton Smart2200CRMXL and Smart3000CRMXL UPS platforms, this shallow-depth external battery pack for UPS systems installs in a standard 19-inch rack using only 4U of space. Facilities teams and integrators specify this battery pack when a UPS runtime extension is needed without adding a second UPS chassis or reworking existing rack layout. The daisy-chain connector also supports staged expansion as backup power requirements grow.

Product Description

The BP48V48RT4U is purpose-built for organizations that depend on continuous power in server rooms, network closets, and other mission-critical spaces. Rather than replacing an existing UPS to gain more runtime, IT and facilities managers can add this external battery module directly to a compatible 48V DC UPS and extend protected operating time during utility outages. The shallow 16.74-inch depth is a deliberate design choice for rack-mount UPS battery expansion in shallower cabinets common in network closets and secondary equipment rooms, where a full-depth battery cabinet won't fit.

Installation uses the included 2-post rack mounting hardware, with an optional 4-post rail kit available for cabinets that require four-point support at this unit's weight. The attached 20.5-inch DC cable with UPS-specific connector simplifies the physical connection to the host UPS, and the daisy-chain output allows a second battery pack to be added later for further runtime extension without redesigning the power architecture. This makes the BP48V48RT4U a practical fit for commercial deployment scenarios where uptime requirements grow over time — additional network switches, servers, or AV control processors added to a rack often push runtime needs beyond the UPS's internal battery alone.

Because this is a battery expansion module and not a standalone UPS, it must be paired with a supported host UPS system; confirm compatibility with your specific UPS model before ordering. The unit ships with a 2-year limited warranty (U.S. and Canada), reflecting Eaton's commercial-grade build standard for data center and network infrastructure equipment.

Key Features

• Shallow 16.74" Depth — Fits network closets and shallow-depth cabinets where full-depth battery packs won't mount.
• 4U Rack-Mount Form Factor — Installs in standard 19-inch racks alongside servers, switches, and other rack-mount UPS equipment.
• Extended UPS Runtime — Adds external battery capacity to compatible 48V DC UPS systems for longer protected operation during outages.
• Daisy-Chain Expansion — Connects additional compatible battery packs for further runtime extension as power needs grow.
• Included 2-Post Mounting Hardware — Ready for standard rack installation out of the box, with an optional 4-post rail kit for added support.
• 180A DC Fuse Protection — Built-in overload protection safeguards the battery pack and connected UPS.
• Attached UPS-Specific DC Cabling — 20.5" connection cable simplifies integration with supported Eaton UPS systems.
• Commercial-Grade 2-Year Warranty — Backed by Eaton's standard limited warranty for U.S. and Canada deployments.

Typical Applications

• Data center
• Network closet
• Server room
• Government space

Technical Specifications

Frequently Asked Questions

Which UPS systems is the BP48V48RT4U compatible with?
This battery pack is designed for Eaton Smart2200CRMXL and Smart3000CRMXL 48V DC UPS systems, as well as other UPS models that explicitly specify this battery pack as a supported accessory. Confirm your exact UPS model number before ordering.

Does this unit function as a standalone UPS?
No. The BP48V48RT4U is an external battery expansion module, not a standalone UPS. It must be connected to a compatible host UPS system to provide extended runtime.

How much rack space and depth does installation require?
The unit occupies 4U of vertical rack space and requires a minimum rack depth of 20 inches. Its own depth is 16.74 inches, making it a shallow-depth option compared to standard full-depth battery cabinets.

Can multiple battery packs be connected together?
Yes. The BP48V48RT4U includes a daisy-chain connector that allows additional compatible battery packs to be added for further runtime extension.

What mounting hardware is included?
2-post rack mounting hardware ships with the unit. An optional 4-post rail kit (4POSTRAILKIT) is available for cabinets requiring four-point rack support.

What is the warranty coverage?
Eaton backs the BP48V48RT4U with a 2-year limited warranty in the U.S. and Canada (1-year limited warranty in other regions).

What is the expected battery lifespan?
Typical battery lifespan is 4 to 6 years in North American operating conditions, consistent with standard commercial UPS battery replacement cycles.

Who should install this battery pack?
Installation should be performed by a qualified IT or facilities technician familiar with rack-mount power equipment, given the unit's weight (143.3 lbs) and DC electrical connections.