What Makes the 51.2V 50Ah 2.5kWh Rack Battery 3U Ideal for Energy Storage?
The 51.2V 50Ah 2.5kWh Rack Battery 3U is a high-efficiency lithium-ion energy storage solution designed for scalability and stability in commercial and industrial applications. With a compact 3U rack design, LiFePO4 chemistry, and advanced battery management systems (BMS), it ensures long cycle life, thermal safety, and seamless integration with solar arrays, UPS systems, and microgrids.
How Does the 51.2V 50Ah 2.5kWh Rack Battery 3U Work?
This rack battery uses 16 LiFePO4 cells in series to achieve 51.2V nominal voltage. The integrated BMS monitors voltage, temperature, and current, balancing cell performance and preventing overcharge/discharge. Its modular design allows parallel connections for capacity expansion, while the 3U form factor (5.25″ height) fits standard server racks, minimizing spatial demands in data centers or renewable energy installations.
What Are the Key Specifications of the 51.2V 50Ah 2.5kWh Rack Battery?
| Feature | Detail |
|---|---|
| Voltage | 51.2V (nominal), 44.8V–58.4V (operating range) |
| Capacity | 50Ah (2.5kWh per module) |
| Chemistry | LiFePO4 (3,000–6,000 cycles at 80% DoD) |
| Dimensions | 19” rack width, 3U height (5.25”), 15–20kg weight |
| Efficiency | ≥95% round-trip efficiency |
Where Is the 51.2V 50Ah 2.5kWh Rack Battery 3U Commonly Used?
This battery excels in scenarios requiring stable, scalable energy storage:
- Solar + Storage Systems: Stores excess solar energy for nighttime use.
- UPS Backup: Provides instant power during grid outages for data centers.
- Telecom Infrastructure: Powers remote cell towers off-grid.
- Microgrids: Balances load demand in industrial parks.
Beyond these applications, the battery is increasingly adopted for agricultural operations requiring reliable power for irrigation systems and cold storage. Hospitals also utilize it as a backup energy source for critical medical equipment during prolonged outages. Its compatibility with hybrid inverters makes it a cornerstone for off-grid cabins and mobile charging stations deployed in disaster relief scenarios.
Why Choose LiFePO4 Chemistry for the 51.2V 50Ah Rack Battery?
LiFePO4 (lithium iron phosphate) offers superior thermal stability, eliminating fire risks from thermal runaway. Its flat discharge curve ensures stable voltage output even at low charge levels. Compared to NMC or lead-acid batteries, LiFePO4 provides 3–4x longer cycle life (6,000 cycles at 80% DoD) and operates efficiently in -20°C to 60°C environments.
The chemistry’s inherent tolerance to partial state-of-charge (PSOC) cycling makes it ideal for solar applications where batteries rarely reach 100% charge. Unlike NMC batteries, LiFePO4 doesn’t require cobalt, reducing ethical sourcing concerns and price volatility. For businesses, this translates to lower total cost of ownership over 10+ years despite slightly higher upfront costs compared to lead-acid alternatives.
How to Install and Maintain the 51.2V 50Ah 2.5kWh Rack Battery?
- Mounting: Secure the 3U module in a ventilated, temperature-controlled rack.
- Wiring: Connect terminals using torque-rated cables (≥25mm²).
- Configuration: Set BMS parameters via RS485/CanBus for charge/discharge limits.
- Maintenance: Check terminals quarterly for corrosion and update BMS firmware annually.
What Safety Features Does the 51.2V 50Ah Rack Battery Include?
- Multi-Layer BMS: Isolates faulty cells and triggers shutdown during anomalies.
- Flame-Retardant Housing: UL94-V0 certified casing resists ignition.
- IP20 Protection: Shields against dust and accidental contact.
- Thermal Sensors: Monitor cell temperatures in real time.
Can the 51.2V 50Ah Battery Be Scaled for Higher Capacity?
Yes. Up to 16 modules can be paralleled via dedicated busbars, achieving 40kWh (16 x 2.5kWh). The BMS supports master-slave communication for synchronized charge/discharge across all units. Scalability makes it ideal for growing energy demands in EV charging stations or hybrid power systems.
“The 51.2V 50Ah Rack Battery 3U represents a paradigm shift in industrial energy storage. Its modularity and LiFePO4 safety make it a top choice for businesses transitioning from diesel generators to sustainable microgrids. At Redway, we’ve seen clients reduce energy costs by 40% while achieving 99.9% uptime in mission-critical applications.”
— Energy Storage Engineer, Redway Power Solutions
FAQ
- How Long Does the 51.2V 50Ah Battery Last?
- At 80% depth of discharge (DoD), it delivers 3,000–6,000 cycles (8–15 years), depending on ambient temperature and discharge rates.
- Is the Battery Compatible with Solar Inverters?
- Yes. It works with major inverters (e.g., SMA, Victron, Growatt) via CAN/RS485 protocols. Pre-configured voltage ranges match most 48V solar systems.
- Does the Battery Require Cooling?
- Passive cooling suffices for standard use. Active cooling (fans) is recommended only in environments exceeding 40°C or during sustained high-current discharges.