APC Smart-UPS X 120V External Rack/Tower Battery Pack with Sealed Lead Acid (VRLA)

APC Smart‑UPS X 120V External Rack/Tower Battery Pack

The APC Smart‑UPS X 120V External Rack/Tower Battery Pack is a dedicated power reserve module designed to extend the runtime of APC’s Smart‑UPS systems. It delivers a robust 1200 VAh capacity, enabling uninterrupted operation during grid outages or maintenance events.

Key Technical Specifications

• Battery Technology: Sealed Lead Acid (VRLA) – reliable, maintenance‑free performance with a sealed design that prevents leakage and reduces ventilation requirements.
• Voltage: 120 V – matches the standard UPS input for seamless integration.
• Capacity: 1200 VAh – provides extended runtime, typically around 30–45 minutes at full load depending on the connected UPS model.
• Dimensions (WxHxD): 432 mm × 178 mm × 483 mm – compact enough for rack or tower mounting while maintaining a low profile.
• Weight: 60.9 kg – manageable for handling and installation in data centers or server rooms.
• Operating Temperature Range: 0 °C to 40 °C – suitable for most indoor environments.
• Storage Temperature Range: –15 °C to 45 °C – allows safe storage outside of operating conditions.
• Altitude: Operates up to 3000 m; non‑operational up to 15000 m – suitable for high‑altitude installations.
• Humidity: 0 %–95 % RH during operation and storage – robust against varying moisture levels.
• Hot‑Swap Capability: Yes – batteries can be replaced without powering down the UPS, ensuring continuous protection.
• Certification: RoHS compliant; REACH certified – meets stringent environmental and safety standards.

Design and Build Quality

The battery pack features a durable black enclosure that protects the internal VRLA cells from physical damage. Its 4U height (approximately 48 cm) allows it to fit into standard rack configurations, while an optional tower mount provides flexibility for non‑rack environments.

With a depth of 483 mm and a package depth of 633 mm, the unit is engineered for efficient space utilization. The width of 178 mm ensures it can be installed alongside other rack components without excessive crowding.

Installation and Integration

Installing the APC Smart‑UPS X 120V External Battery Pack is straightforward:

1. Mounting: Secure the unit in a rack or tower using the provided mounting brackets. Ensure proper ventilation around the enclosure.
2. Connection: Attach the battery pack to the UPS via the designated hot‑swap interface. The connector is designed for quick, tool‑free attachment.
3. Configuration: Once connected, the UPS firmware automatically detects the new capacity and recalculates runtime parameters.
4. Testing: Perform a battery health check through the UPS management software to confirm proper integration.

The hot‑swap feature allows technicians to replace batteries while the system remains powered, eliminating downtime during maintenance cycles.

Performance and Reliability

Sealed Lead Acid (VRLA) technology offers a balance between cost, reliability, and environmental friendliness. The battery pack’s 1200 VAh capacity ensures that critical equipment remains powered during extended outages, providing peace of mind for data centers, server rooms, and other mission‑critical environments.

The unit’s design accommodates a wide range of operating conditions:

• Temperature resilience: Operates effectively from 0 °C to 40 °C, with storage tolerance up to –15 °C.
• Altitude adaptability: Functionality maintained up to 3000 m altitude, making it suitable for high‑elevation sites.
• Humidity tolerance: Handles up to 95 % relative humidity without performance degradation.

Maintenance and Longevity

The VRLA cells are sealed, eliminating the need for electrolyte checks or top‑up procedures. The expected lifespan is approximately three years, after which replacement ensures continued reliability. Regular monitoring via UPS management software can detect early signs of degradation, allowing proactive maintenance.

Environmental and Safety Compliance

The battery pack meets strict environmental regulations:

• RoHS compliance: Free from hazardous substances such as lead, mercury, cadmium, and hexavalent chromium.
• REACH certification: Conforms to European chemical safety standards, ensuring safe handling and disposal.

These certifications guarantee that the product is safe for use in regulated environments and can be responsibly recycled at end of life.

Applications and Use Cases

• Data Centers: Extends backup time for critical servers, storage arrays, and networking gear.
• Telecommunications: Provides uninterrupted power to base stations and switching equipment during outages.
• Industrial Control Systems: Protects PLCs, SCADA systems, and other automation hardware from sudden loss of power.
• Medical Facilities: Safeguards life‑supporting devices and diagnostic equipment in hospitals and clinics.

Conclusion

The APC Smart‑UPS X 120V External Rack/Tower Battery Pack is a high‑performance, reliable power reserve solution that enhances the uptime of APC’s Smart‑UPS systems. Its robust VRLA technology, extensive environmental tolerance, and hot‑swap capability make it an ideal choice for any organization requiring dependable backup power without compromising on space or maintenance simplicity.