APC 21504VAh Extended Run Time UPS Battery Cabinet

Discover dependable, scalable power protection with the APC 21504VAh Extended Run Time UPS Battery Cabinet. Engineered by APC, a trusted name in uninterruptible power supply solutions, this VRLA battery cabinet is designed to extend runtime for critical equipment and maintain uptime during outages. Ideal for data centers, server rooms, medical facilities, and communications infrastructure, it delivers reliable backup power with easy maintenance and a streamlined design that helps you optimize space and costs.

• Extended runtime capacity — 21,504 VAh of energy storage to significantly extend run times for essential equipment during power interruptions, helping protect uptime and data integrity.
• VRLA battery technology — Valve-regulated lead-acid batteries provide safe, maintenance-friendly operation with sealed construction that minimizes emissions and simplifies service.
• Hot-swappable battery design — Batteries can be replaced without powering down the connected equipment, reducing downtime and enabling proactive maintenance without interrupting critical operations.
• Easy access for maintenance — Thoughtful terminal placement and accessible battery modules simplify inspections, testing, and routine servicing, saving time and labor costs.
• Cost-efficient power protection — Delivers efficient watt-hours at a lower cost per usable energy, helping you optimize total cost of ownership while delivering reliable backup energy when it matters most.

Technical Details of APC 21504VAh Extended Run Time UPS Battery Cabinet

• Battery type: VRLA (Valve-Regulated Lead Acid) batteries designed for sealed, maintenance-light operation.
• Capacity: 21,504 VAh, providing extended backup energy to support critical loads during extended outages.
• Configuration: External battery cabinet intended to complement compatible APC UPS systems, enabling scalable backup power for evolving infrastructure.
• Maintenance design: Hot-swappable battery modules that allow replacement without disconnecting loads or powering down the protected equipment.
• Access: Battery terminals and modules arranged for straightforward maintenance access and quick service checks.
• Application: Suited for data centers, telecommunication closets, and any environment requiring reliable, extended UPS runtime for essential devices.

How to install APC 21504VAh Extended Run Time UPS Battery Cabinet

Installing the APC 21504VAh Extended Run Time UPS Battery Cabinet is a practical step to maximize uptime for critical systems. Follow these general guidelines to ensure a safe, efficient setup that aligns with APC recommendations and best practices for backup power systems.

Preparation and planning:

Before installation, verify compatibility with your existing APC UPS unit and confirm that the external battery cabinet is appropriate for your load and runtime requirements. Review the UPS user guide for any specific mounting, clearance, or ventilation requirements. Ensure you have the correct hardware and cables recommended by APC for external battery connections.

Location and mounting:

Choose a clean, well-ventilated space with stable temperature and humidity levels suitable for battery operation. Place the cabinet in a secure location with adequate clearance on all sides for access and service. If mounting in a rack, follow your facility’s standard rack installation procedures and ensure proper weight distribution and cable management.

Electrical connections:

Power down the UPS system and follow proper lockout/tagout procedures as applicable. Connect the external battery cabinet to the UPS per APC’s wiring diagram and installation manual, using manufacturer-approved cables and connectors. Route cables neatly to prevent strain, interference, or accidental disconnections. After connections, inspect terminals for tightness and signs of corrosion or damage.

Battery module installation and replacement:

Insert hot-swappable battery modules according to the manufacturer’s guidance, ensuring secure engagement and proper polarity. When replacing batteries in the future, power down only the affected module if required by your UPS model, then swap in a fresh module and test the system to verify normal operation.

Configuration and testing:

Power on the UPS and perform any required configuration steps from the UPS management software or on-device interface. Conduct a brief integrity test or runtime calculation to confirm the external cabinet is providing the expected run time assistance. Monitor battery temperatures and alarms during the initial operation and adjust ventilation or placement if needed.

Maintenance and monitoring:

Establish a regular maintenance schedule that includes battery health checks, terminal inspections, and firmware updates for the UPS if applicable. Maintain documentation of battery replacement cycles and runtime estimates to support predictable service windows and capacity planning.

Safety considerations:

Always follow local electrical codes and APC safety guidelines when installing or servicing the cabinet. Wear appropriate PPE, avoid water exposure, and ensure that the installation area is free from clutter that could impede access to the cabinet or impede airflow around batteries.

Frequently asked questions

• Q: What is the primary benefit of the APC 21504VAh Extended Run Time UPS Battery Cabinet? A: It provides a substantial extension of runtime for critical equipment, enabling systems to stay online longer during power outages while maintaining safe, easy maintenance with hot-swappable VRLA batteries.
• Q: What type of batteries are used? A: Valve-regulated lead-acid (VRLA) batteries, chosen for safe, sealed operation with minimal routine maintenance.
• Q: Can I replace batteries without taking down connected equipment? A: Yes. The hot-swappable design allows battery replacement without powering down the protected loads, reducing downtime during maintenance.
• Q: Is this cabinet compatible with all APC UPS models? A: The cabinet is designed to work with compatible APC UPS systems that support external battery cabinets. Verify compatibility with your specific UPS model and review APC installation guidelines.
• Q: How does the extended runtime impact total cost of ownership? A: By delivering more usable energy per watt-hour, the cabinet can lower the cost per unit of backup energy and reduce the frequency of battery replacements or upsizing the UPS for runtime needs.