The BYD HVS/HVM Battery Control Unit is the control unit of BYD’s High voltage batteries. It is essential when making a ‘stack’. The BYD HVS/HVM Battery Control Unit comes with the base for the stack.
The BYD HVS/HVM Battery Control Unit ensures that the batteries are safely charged and discharged. In doing so, it monitors battery life and performance.
All BYD products come with a 10-year warranty.
Also take a look at the datasheet.