Description
APC Smart-UPS SRT72RMBP – 72V 2.2kVA Rackmount External Battery Pack for Extended Runtime & Scalable Power Protection
The APC Smart-UPS SRT72RMBP is a high-capacity, hot-swappable external battery pack engineered to extend backup runtime for APC Smart-UPS SRT 2.2kVA (72V) rackmount uninterruptible power supply (UPS) systems. Designed for small to mid-sized data centers, server rooms, and critical IT edge environments, this 2U rackmount battery module ensures continuous power during outages—protecting servers, storage, networking gear, and virtualized workloads from disruption, data corruption, and unplanned downtime.
As part of APC’s trusted Smart-UPS SRT (Smart-UPS RT) series, the SRT72RMBP delivers enterprise-grade reliability, intelligent battery management, and seamless integration with APC’s 72V UPS platform—enabling IT teams to scale runtime on demand without oversizing their primary UPS unit.
Key Features & Specifications
- Model: SRT72RMBP
- Compatible UPS Systems:
- APC Smart-UPS SRT 2.2kVA (72V) models (e.g., SRT2200RMXLA, SRT2200XLA)
- Battery Voltage: 72V DC (matches internal architecture of SRT 2.2kVA units)
- Energy Capacity: Approx. 504–594 VAh (exact capacity varies by revision; typical for 72V/8Ah–9Ah battery string)
- Form Factor: 2U rackmount (fits standard 19″ racks)
- Hot-Swappable: Yes – batteries can be replaced without powering down the UPS or connected critical load
- Scalable Runtime: Multiple SRT72RMBP units can be daisy-chained to a single SRT 2.2kVA UPS (up to manufacturer-specified limits, typically 1–2 external packs)
- Battery Type: Sealed, maintenance-free Valve-Regulated Lead-Acid (VRLA)
- Intelligent Management:
- Real-time battery status via APC PowerChute™ Business Edition
- Accurate runtime estimation and predictive failure alerts
- Automatic self-test and calibration
- Safety & Compliance: UL, CE, FCC, RoHS certified
- Warranty: 2-year limited warranty (including batteries)
Why Extend Runtime with the SRT72RMBP?
The internal batteries of the SRT 2.2kVA UPS typically provide 5–12 minutes of runtime at full load (2200VA / ~1980W). While sufficient for brief outages, this may be inadequate for:
- Graceful shutdowns of virtualized environments (VMware, Hyper-V, Nutanix)
- Bridging to generator power (which may take 10–30 seconds, but longer runtimes add safety margin)
- Riding through extended brownouts or rolling blackouts in unstable grid regions
By adding one SRT72RMBP, runtime can be doubled or tripled. For example:
- At 1000W load, a single SRT2200 + one SRT72RMBP may provide 25–40+ minutes of backup
- At 600W load, runtime can exceed 60 minutes
This ensures critical systems remain online long enough to: ✅ Execute automated shutdown scripts
✅ Notify administrators via email/SMS
✅ Maintain uptime during utility fluctuations
Seamless Integration with Smart-UPS SRT 2.2kVA
The SRT72RMBP is purpose-built for APC’s 72V SRT platform, ensuring:
- Automatic recognition by the UPS upon connection
- Accurate runtime calculations displayed on the UPS LCD and in PowerChute
- Balanced charging across internal and external battery strings
- Unified monitoring—no third-party drivers or complex configuration
Installation is straightforward: connect the included high-current DC cable from the battery pack to the UPS’s external battery port, and the system auto-detects the additional capacity.
Hot-Swappable Design for Zero-Downtime Maintenance
Unlike traditional UPS battery replacements that require shutdowns, the SRT72RMBP supports hot-swap capability:
- Replace aging or failed batteries while the UPS is online and supporting critical loads
- Minimize operational risk during business hours
- Extend total system lifecycle through modular upgrades
Note: While the pack supports hot-swap functionality, individual battery modules inside may require brief disconnection—always follow APC’s service documentation.
Ideal Use Cases
- Small business server rooms running domain controllers, file servers, or NAS
- Network closets with core switches (Cisco Catalyst, Meraki), firewalls (FortiGate, Palo Alto), and wireless controllers
- Retail or healthcare locations requiring PCI or HIPAA-compliant uptime
- Remote branch offices with limited on-site IT support
- Edge computing deployments needing reliable, scalable backup
Technical Summary
Best Practices for Deployment
- Confirm UPS Compatibility: Only use with 72V SRT 2.2kVA models—not compatible with 48V (1k/1.5kVA) or 192V (8k/10kVA) systems.
- Use APC-Approved Cables: Ensure proper current handling and communication integrity.
- Monitor Battery Health: Use PowerChute to track capacity degradation (batteries typically last 3–5 years).
- Ensure Adequate Ventilation: Install in well-ventilated racks; avoid blocking front/rear airflow.
- Plan for Future Growth: Start with one pack, add a second if longer runtime is needed.
| Product Name | Smart-Ups SRT 72V 2.2KVA RM Battery Pack |
| Manufacturer Part Number | SRT72RMBP |
| Product Type | UPS Battery Pack |
| Battery Characteristics | Leak Proof/Maintenance- free |
| Hot Swappable | Yes |
| Battery Chemistry | Lead Acid |
| Additional Warranty Information | 2 years repair or replace |
| Environmentally Friendly | Yes |
| Environmental Certification | RoHS |
| Maximum Battery Life | 5 Year |
| Minimum Battery Life | 3 Year |
| Product Color | Black |
| Height | 3.4″ |
| Width | 17″ |
| Depth | 23.4″ |
| Compatibility | APC Smart-UPS SRT |
| Limited Warranty | 2 Year |
| Mercury Free | Yes |
| Rack Height | 2U |
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