BSLBATT® 51.2V 50Ah 2.56kWh RACK MOUNTED Energy Storage Battery (Main UK Dealer)

BSLBATT® 51.2V 50Ah LiFePO4 Lithium Battery | 2.56kWh Rack Mount Energy Storage | Victron Approved | 10 Year Warranty

Power your home or business with the robust and reliable BSLBATT® B-LFP48-50-RM 51.2V 50Ah Lithium Iron Phosphate (LiFePO4/LFP) battery. This compact, rack-mounted battery delivers 2.56kWh of scalable energy storage, ideal for solar systems, off-grid setups, and emergency backup. Victron Approved, it integrates seamlessly with top-tier inverter/charges.

Key Features & Benefits

• Flexible Capacity & Scalability – 2.56kWh per unit, expandable up to 63 modules in parallel for systems ranging from 2.56kWh to 161.28kWh. Ideal for both residential and commercial setups.

• Safe & Proven LiFePO4 Technology – Cobalt-free chemistry for enhanced thermal stability, safety, and long-term reliability.

• Built-in Battery Management System (BMS) – Smart BMS with protection against overcharge/discharge, voltage/temperature monitoring, cell balancing, and short-circuit prevention.

• High Efficiency & Long Life – 99% efficiency with >6000 cycles and fast charge/discharge capabilities. Round-trip efficiency of 95%.

• Wide Temperature Tolerance – Operates from -4°F to 140°F (-20°C to 60°C) for year-round performance.

• 10-Year Warranty – Designed for daily cycling and long service life.

• Plug-and-Play Design – 3U rack-mounted unit for easy installation, with all power and communication cables included.

• Broad Compatibility – Seamlessly works with Victron, Goodwe, Studer, Deye, SunSync, LuxPower, Afore, Solis S6, and more.

• Space-Saving Footprint – Ultra-compact design maximizes storage potential in tight spaces.

• Versatile Applications – Suitable for both on-grid and off-grid energy systems, including solar and wind installations.

Specifications

• Model: B-LFP48-50-RM (48V 50Ah LFP Battery)

• Nominal Voltage: 51.2V

• Voltage Range: 47V – 55V

• Nominal Capacity: 50Ah

• Nominal Energy: 2.56kWh

• Max Charge Current: 50A (2.56kW)

• Max Discharge Current: 50A (2.56kW)

• Size: 350mm (L) x 483mm (W) x 136mm (H) (4U)

• Weight: 29kg

• Cycle Life: >6000 cycles

• Certifications: IEC62619, UN38.3

Applications

• Residential Solar Energy Storage

• Off-Grid Solar & Wind Systems

• Emergency Backup Power

• Commercial Energy Storage

• Telecommunications Power Backup

2.56kWh 16 Cell Large Capacity

The BSLBATT® 50Ah 48V battery is built with 16 high-quality LiFePO4 cells in series, delivering a nominal voltage of 51.2V. This design offers higher voltage than standard 15-cell batteries, improving system performance and compatibility with powerful inverters.

Why 16 Cell Batteries Are Better Than 15 Cell Lithium Batteries

While both may be marketed as 48V batteries, 16-cell models (16 x 3.2V = 51.2V) provide a true nominal voltage of 51.2V. This higher voltage enables greater inverter efficiency and power delivery, with reduced current for the same output – improving overall system performance and reducing strain on cables and components.

3U Rack Battery Design

The BSLBATT® 48V 50Ah battery features a compact 3U rack size, offering up to 1/3 space savings compared to other batteries of similar capacity, making it ideal for installations where space is at a premium.

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Safety You Can Trust

The B-LFP48-50E battery complies with UL1973, IEC62619, CEC, and other major international safety standards – giving you confidence in its performance, safety, and reliability for demanding environments.

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About BSLBATT®

Founded in 2012, BSLBATT is a leading Chinese lithium battery manufacturer known for producing some of the most advanced and safest LiFePO4 energy storage systems on the market. From solar to low-speed EVs and telecoms, BSLBATT’s solutions are trusted worldwide. With ISO, CE, UL1973, UN38.3, RoHS, and IEC62133 certifications, BSLBATT ensures every product meets the highest global quality standards.