BYD B-BOX 2.56kW LiFePO4 Lithium Battery Module (with BMS)

£1,099.99 (ex. VAT)
£1,319.99 (inc. VAT)

Out of Stock


The BYD B-Box is a lithium-iron phosphate (LiFePO) battery unit with battery management system (BMS) for use with an external inverter or charger. All systems can be expanded at any time with the battery modules B-Plus 2.5.

Furthermore, up to eight B-boxes can be connected in parallel. This increases the maximum capacity – flexible in 2.45 kWh steps – to 78.4 kWh (usable). At the same time, the excellent LFP battery technology from BYD shows its full effect. BYD batteries are well tested and can be found in the E-mobility.

This battery can be used as an off-grid solution but also in a grid tied solution for energy storage or self consumption.

The B-Box 2.5 focuses on flexibility. The modular design allows the desired performance and capacity to be achieved as desired.

The B-Plus 2.5 module is the core of the memory. Each B-Plus module is equipped with its own BMS (Battery Management System). This allows the full utilization of the performance even in modules of different age. The housing of the B-Box 2.5 – 10.0 is equipped with a BMU (Battery Management Unit) and can accommodate up to four of the 19 “B-Plus battery modules. A fully equipped housing (B-BOX 10.0) achieves not only 9.8 kWh usable capacity, but also a power of 10 kW.

The BMU is the communication interface between the battery modules and the external inverter.The compatibility is already available for well-known inverter manufacturers such as SMA, Victron or Studer, and is further expanded.


  • Expandable from 2.56kW to 80kWh
  • Additional B-Box 2.5 can be added at any time for complete flexibility depending on requirement and budget
  • Single and Three Phase Solutions available
  • Lithium-Iron Phosphate Battery giving maximum safety and performance (LiFePO4)
  • CE and TUV certified BYD B-Plus 2.5 module (U3A1-50P-A) meets the highest safety standards
  • Proven for use in telecom, off-grid and energy storage/self consumption applications worldwide

Technical Specifications

  • Dimensions (mm): 478mm x 482.6mm x 130mm
  • Material: Lithium Ion (LifePO4)
  • Voltage: 48V
  • Weight: 40kg


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