B-BOX-H5.1 High Voltage Battery 5.1kWh

SKU: BYD-B-BOX-H5.1 Categories: , ,


B-BOX High voltage Battery 

This part contains 4x B-Plus-H Battery modules with 1.28kWh each plus 1x Battery Base with 1x Battery Control Unit. 

Safe Battery Chemistry

B-Box is designed with LiFePO4 chemistry battery which has been widely recognized as one of the safest battery technologies. LiFePO4 chemistry features stable structures and its thermal runaway temperature is over 480 degrees. That’s 100% higher than NCM and NCA chemistry. It is designed for residential and commercial applications with absolute safety.

High Power Output

B-Box has the highest output power in industry, which brings the highest performance to customers. The system is able to reach C rate at max 1C and 2C at peak to support critical loads such as A/C and pumps, etc.

Easy Installation and Uninterruptible Maintenance

All B-Box systems have modular design featuring uninterruptible maintenance, and easy installation.

10 Years Warranty

10 Years Warranty provides the best guarantee of operation.

NOTE: Please note to create a fully working HV BYD battery stack you will always require 1x Battery Base with Battery Control Unit and between 4x and 8x BYD-B-PLUS-H1 battery modules. Depending on the charger used, multiple numbers of stacks in parallel are possible (5 maximum).


To ensure the best possible performance of the storage system Segen recommends updating battery and inverter firmware on commissioning.

Most up to date battery firmware file is available on the link below:


Please download the B-BOX HV Software File and extract the .ZIP file on to your drive. Firmware file needs to be ".img" extension to be recognized by BYD Battery.

As per BYD warranty document, the End User should register the Product in BYD’s after-service website within three months after the first installation. End user register website: http://www.eft-systems.de/Support/login.php?language=en