Currently, the Li-ion battery has become a more significant subject in power battery research and development and its application in EVs. Most of the researchers throughout the world are now concentrating on developing and modifying the lithium ion chemistry to achieve better performance considering the costs and other physical effects.

EMS aims to help power companies get the optimum operating system in accordance with the various realities of the shortcomings and all the advantages contained in the electric power system. An overview of the battery monitoring
and management system, charge and discharge control, protection, state estimation, energy storage and assessment are
explained towards improving the performance of the existing
Li-ion batteries in EV applications. Issues and challenges regarding the safety, environmental impacts, performance and applications are highlighted for future research and development guidelines.