BYD HVS 12.8 Battery Box Premium 12.8 kWh 512V LiFePo4 storage unit

The HVS Battery Box from BYD offers you a usable storage capacity of at least 5.12 kWh and can easily be expanded to a maximum capacity of 12.8 kWh per tower by adding additional high-voltage battery modules. To reach the maximum capacity of 38.4 kWh, up to 3 identical HVS towers can be connected in parallel. Furthermore, the system can be expanded later by adding additional HVS modules or parallel HVS towers. This makes it ideal for powering high-power consumers and supports you even during power outages, thanks to the integrated emergency power function, as well as in off-grid operation. The HVS series is once again equipped with state-of-the-art LFP battery cells, which are known for their durability and safety

• Powerful emergency/backup power
• Off-grid functionality
• Patented modular plug-in design
• Good scalability
• Award-winning efficiency thanks to true series connection
• Compatible with leading single-phase and three-phase inverters
• Cobalt-free lithium iron phosphate (LFP) battery
• Battery control unit and battery base
• Highest safety standards according to VDE2510-50 / IEC62619 / CEC / CE / UN38.3
• 10-year warranty—you can find information on the warranty terms here

The BYD HVS Set includes:

• BYD HVS 2.56 kWh high-voltage battery module (modular; 2–5 units depending on selection)
• 1x BYD HVS/HVM battery control unit + base

A compatibility list for BYD with over 30 inverter models, including Fronius, GoodWe, SMA, and Sungrow, is available for download in our attachments (Compatible Inverter List).

HVS 2.56 kWh Battery Module

The HVS 2.56 kWh high-voltage battery module from BYD impresses with its high cycle stability and remarkable longevity thanks to its LiFePO4 technology. The battery’s modular and stackable design allows for versatile use in various scenarios and is characterized by a very straightforward installation. It delivers outstanding performance, even under heavy loads. Along with the battery management system, the battery is the core component of the BYD HVS Battery Box Premium. This storage system can be easily expanded in series to include up to 5 modules without the need for cables. Connecting up to 3 identical battery boxes in parallel additionally enables a maximum capacity of 38.4 kWh.

The New System Generation

The new BYD generation is based on the proven storage systems and offers all the same features as before. They are introducing a battery module to the market that has a higher storage capacity than its predecessor. Thanks to advancements in cell technology, the system weight has been reduced by nearly 30% and the depth by 8 cm, which requires less floor space and results in a sleeker appearance. A highlight of the new storage systems is their IP55 protection rating, which enables outdoor use. In addition, the new generation offers even greater flexibility and scalability. Up to three battery towers can now be connected to form a single system. BYD remains true to its approach regarding charge and discharge rates, as each battery can deliver its rated capacity as power—that is, at 1C. This makes the new series ideal for on-grid, on-grid plus backup, and off-grid systems.

Modular Battery System

The HVS Battery-Box can be configured with 2 to 5 HVS battery modules arranged in a series connection. This allows for a capacity ranging from 5.1 to 12.8 kWh. To achieve the maximum capacity of 38.4 kWh, up to 3 identical HVS towers can be connected in parallel. It is also possible to expand the system later by adding additional HVS modules or parallel HVS towers.

Powered at All Times: BYD Backup Power and Off-Grid Function

The HVS set is extremely versatile and can be used in both on-grid and off-grid systems. Its integrated emergency power function is particularly practical and in high demand. This function enables the system to supply power to the entire household during a power outage, either on a single phase or on three phases. This requires a compatible hybrid or storage inverter that supports both emergency power and off-grid functions. A list of compatible inverters can be found in the “Downloads” section.

Power and Storage Capacity: Scalability Made Easy

BYD places great emphasis on the scalability of its storage systems. The new B-Box HVS is easy to retrofit and allows for simple expansion. A simple plug-in connection eliminates cable clutter and unnecessary complexity in the product design. It is possible to add additional storage modules. Furthermore, by connecting up to three storage towers in parallel, a maximum storage capacity of 38.4 kWh and a discharge power of 38.4 kW can be achieved. It is important to note that each storage tower must have the same number of modules.

Technical Specifications per Battery

• Capacity: 2.56 kWh
• Max. output current: 25A
• Peak output current: 50 A (3 sec)
• Rated voltage: 102.4 V
• Voltage range: 80–115.2 V
• Dimensions: 233 x 585 x 298 mm
• Weight: 38 kg
• Operating temperature range: -10°C to +50°C
• Protection rating: IP55
• Battery efficiency: >96%
• Communication: CAN / RS485

Control Unit and Base

The BYD battery control unit and base provide protection, monitoring, and a secure mounting surface for the BYD high-voltage battery storage system. This compact two-component set can be used with both the HVS and HVM battery boxes.