BSLBATT® 51.2V 50Ah 2.56kWh Rack Battery – UK Energy Storage

Power your home or business with the BSLBATT® B-LFP48-50-RM 51.2V 50Ah LiFePO4 battery, a compact, high-performance rack-mounted solution delivering 2.56kWh of scalable energy storage. Perfect for UK solar installations, off-grid systems, and emergency backup, it is Victron Approved for seamless integration with leading inverter/chargers. Built to last, it offers a 10-year warranty for long-term reliability.

Reliable Energy, Simplified with BSLBATT

BSLBATT® B-LFP48-50E-RM Rack Battery

Engineered for residential and commercial energy storage, theB-LFP48-50E-RM rack-mounted battery delivers 2.56kWh per unit with expandable capacity up to 161.28kWh. Featuring safe, cobalt-free LiFePO4 chemistry, smart BMS protection, and ultra-compact design, it ensures reliable backup power, seamless solar integration, and long-lasting performance across UK solar, off-grid, and hybrid energy systems.

Compact 3U Rack-Mounted Design

The BSLBATT® 51.2V 50Ah battery comes in a 3U rack-mounted form factor, delivering 2.56kWh of reliable energy storage while maximising space efficiency. Its compact design makes it perfect for residential homes, commercial setups, and off-grid solar or wind installations where installation space is limited.

Safe and High-Performance LiFePO4

Built with cobalt-free LiFePO4 cells, this battery includes a smart Battery Management System (BMS) that protects against overcharge, over-discharge, temperature fluctuations, and short circuits. The result is a safe, stable, and long-lasting energy solution suitable for daily cycling and continuous operation.

Flexible and Scalable Energy Capacity

Each unit provides 2.56kWh of energy, and the system is expandable up to 63 modules in parallel, supporting capacities from 2.56kWh to 161.28kWh. This flexibility makes it ideal for growing residential solar systems or larger commercial energy storage applications, giving full control over energy needs.

Victron Approved & Broad Compatibility

The BSLBATT® battery is Victron Approved and works seamlessly with a wide range of leading inverters and chargers, including Goodwe, Studer, Deye, SunSync, LuxPower, Afore, and Solis S6. Its plug-and-play design ensures easy installation and smooth integration into UK solar and off-grid energy systems.

Specifications

Discover the Power Within

Explore the detailed specifications of the BSLBATT® B-LFP48-50E-RM 3U rack-mounted battery. Designed for reliable, long-lasting, and scalable energy storage, this 51.2V 50Ah LiFePO4 battery delivers safe, high-efficiency, and compact power for residential solar, off-grid, commercial, and backup energy applications.

Parameter	Details
Model	B-LFP48-50-RM (48V 50Ah LFP Battery)
Nominal Voltage	51.2 V
Voltage Range	47 V – 55 V
Nominal Capacity	50 Ah
Nominal Energy	2.56 kWh
Max Charge Current	50 A (2.56 kW)
Max Discharge Current	50 A (2.56 kW)
Size (L × W × H)	350 × 483 × 136 mm (4U)
Weight	29 kg
Cycle Life	>6,000 cycles
Certifications	IEC62619, UN38.3