BSLBATT® 51.2V 100Ah 5.12kWh RACK MOUNTED Energy Storage Battery BLACK EDITION (Main UK Dealer)

BSLBATT® 51.2V 100Ah LiFePO4 Lithium Battery | 5.12kWh Rack Mount Energy Storage | Victron Approved | 10 Year Warranty

Power your home or business with the robust and reliable BSLBATT® B-LFP48-100 51.2V 100Ah Lithium Iron Phosphate (LiFePO4/LFP) battery. This rack-mounted LiFePO4 battery delivers 5.12kWh of scalable energy storage, perfect for solar energy systems, off-grid applications, and emergency backup power. Victron Approved, this battery ensures seamless integration with leading inverter/charge controllers.

Key Features & Benefits

• High Capacity & Scalability – 5.12kWh capacity, expandable up to 63 modules in parallel for systems ranging from 5.12kWh to 322kWh. Ideal for residential and commercial energy storage.
• Safe & Reliable LiFePO4 Technology – Cobalt-free LFP chemistry eliminates thermal runaway, fire propagation, and toxic cooling. Proven safety and industry-leading performance.
• Built-in Battery Management System (BMS) – Advanced BMS with multilevel safety features, including overcharge/discharge protection, voltage/temperature monitoring, cell balancing, and short-circuit prevention.
• High Efficiency & Performance – 99% efficiency rate, fast charge/discharge capabilities, and >6000 cycle life. Round trip efficiency 95%.
• Wide Operating Temperature – Operates reliably from -4°F to 140°F (-20°C to 60°C).
• Long Lifespan & Warranty – 10-year warranty, designed for daily cycling.
• Easy Installation & Maintenance-Free – Rack-mounted design (4U), plug-and-play connectivity, and minimal maintenance. Power and communication cables included.
• Broad Inverter Compatibility – Seamless integration with Victron, Goodwe, Studer, Deye, SunSync, LuxPower, Afore, Solis S6, and other industry-standard inverters.
• Compact & Energy-Dense – Ultra-compact design maximizes energy storage in a small footprint.
• On-Grid & Off-Grid Versatility – Perfect for solar, wind, and hybrid energy systems.

Specifications

• Model: B-LFP48-100 (48V100Ah LFP battery)
• Nominal Voltage: 51.2V
• Voltage Range: 47V – 55V
• Nominal Capacity: 100Ah
• Nominal Energy: 5.12kWh
• Max Charge Current: 100A (5.1kW)
• Max Discharge Current: 100A (5.1kW)
• Size: 442mm (L) x 538mm (W) x 136mm (H) (4U)
• Weight: 53kg
• Cycle Life: >6000 cycles
• Certifications: IEC62619, UN38.3

Applications

• Residential Solar Energy Storage
• Off-Grid Solar & Wind Systems
• Emergency Backup Power
• Commercial Energy Storage
• Telecomunications power backup.

5.12 kWh 16 Cell Large Capacity

BSLBATT® 100Ah Lithium Battery 48v has a large capacity of 5.12kWh and is composed of 16 high quality LiFePO4 cells connected in series, with an actual voltage of 51.2V.

Why 16 cell batteries are better than 15 cell lithium batteries

48V LiFePO4 Batteries can be made of 15 cells and have a nominal voltage of 48v but 16 cell batteries have a nominal voltage of 51.2v 16x 3.2v = 51.2v however it is common for manufactures label both of these as 48v batteries so why is it better to have higher voltage?

To achieve a 48V battery, you typically need 16 cells in series and a nominal battery of 51.2V.

Having higher voltage is better for a number of reasons really – higher battery voltage means your inverter/chargers and solar chargers can produce more power – or are less restricted – create voltage and current can flow smaller voltage – less current can flow.

4U Rack Battery

BSLBATT® 48V 100Ah Lithium Battery is a standard 4U Rack battery size, which is smaller size compared to ordinary batteries of the same capacity, can save an appropriate 1/3 volume and improve space utilisation.

Safety you can trust

B-LFP48-100E 4U complies with UL1973, IEC62619, CEC, and many other international authoritative certificates. This also means that our batteries meet the world’s highest standards in terms of safety, reliability, and performance, and are suitable for various demanding applications.

About BSLBATT®

Founded in 2012, BSLBATT is a renowned Chinese Li-ion battery manufacturer specialising in the development and supply of the safest and most advanced LiFePO4 batteries on the market. Famous for its superior performance, durability and safety, BSL lithium batteries offer standardised solutions suitable for material handling, low-speed power vehicles and solar energy storage. By utilising innovative lithium-ion technology and high quality materials, BSLBATT ensures that the batteries meet the highest quality standards such as ISO, CE, UL1973, UN38.3, ROHS and IEC62133, providing customers with reliable energy solutions.