Developed to provide a simulation environment for the analysis and design of the electrochemical system and detailed geometry of a single battery cell. A choice of three battery performance models is offered to the user, enhanced with significant developments relevant to contemporary cell design, such as multiple active materials or particle sizes. Through its integrated environment, BDS offers its users a faster battery design process and provides a standard platform connecting material suppliers, cell designers and battery users. This is achieved through a closely coupled 3D simulation which returns the electrochemical and thermal properties as complex distributions over the electrodes and battery cells. The internal construction of each cell is taken into account without the need to resolve all its layers independently, balancing computation effort with appropriate detail.