B-LFP48-120E Server Rack Battery – 51.2V 6.4kWh
The B-LFP48-120E Server Rack Battery is a high-performance 48V LiFePO₄ lithium energy storage solution with a 6.4kWh capacity, designed for dependable and efficient power storage. Ideal for residential solar systems and small commercial applications, it also supports off-grid, backup power, RV, and marine energy systems.With its rack-mounted modular design, the B-LFP48-120E integrates easily into both grid-tied and off-grid setups, delivering stable output, long cycle life, and enhanced safety for modern energy storage needs.
Sustainable Living, Powered by BSLBATT – B-LFP48-120E
Designed for residential solar energy systems, commercial energy management, and light industrial energy storage, the B-LFP48-120E Server Rack Battery (51.2V 6.4kWh) delivers reliable and efficient power for diverse energy needs. Its modular rack-mounted design allows easy installation and scalable expansion, supporting backup power, improved solar self-consumption, and a stable, uninterrupted energy supply.
Long Battery Life
Built for durability, this lithium battery delivers over 6,000 cycles at 90% DOD with a 10-year design lifespan, providing long-term, reliable energy storage.
High Inverter Compatibility
Compatible with most 48V inverters, including Victron and Studer models, ensuring smooth integration and stable operation without hassle.
Intelligent BMS Protection
Equipped with a smart Battery Management System (BMS) that safeguards against over-voltage, over-current, short circuits, and temperature extremes, guaranteeing safe, reliable, and consistent performance.
UL-Standard Battery Pack
Manufactured using automotive-grade processes, the high-quality module meets UL standards for enhanced safety, stability, and extended service life.
DC-Coupled System Design
The DC-coupled architecture is optimized for modern solar installations, offering higher energy conversion efficiency and reduced system losses.
10-Year Warranty
Backed by a 10-year warranty, this server rack lithium battery provides clean, reliable, and sustainable energy for residential and commercial applications.
Specifications
- Nominal Voltage: 51.2 V (3.2V/Cell)
- Nominal Capacity: 6.4 kWh / 125Ah @ 0.5C discharge
- Charge Voltage: 58.4 V
- Cell & Configuration: 16S1P, Lithium Iron Phosphate (LiFePO₄)
- Battery Type: 4U Server Rack / Modular Lithium Battery
- Dimensions (L × W × H): 482.6 × 495 × 177 ±3 mm
- Weight: 57 kg
- Cycle Life: > 6,000 cycles @ 25℃
- Design Life: > 15 years (25℃ / 77℉)
- Protection Level: IP22
- Expandable Units: Up to 63 units in parallel
- Warranty: 10 years
- Certifications: CE, UN38.3, IEC 62619
See Inside the Performance
The B-LFP48-120E Server Rack Battery delivers high-capacity, safe, and efficient LiFePO₄ power for residential solar systems, commercial energy management, off-grid setups, and backup power. Its robust design ensures stable performance and uninterrupted energy supply, making it an ideal solution for modern energy storage applications.





















