With the increase in scope for electric vehicles, the durability and quality of batteries have become a major concern. The battery is an elemental component of an electric vehicle. Lithium cells are most widely used because of their high-power density. Proper battery management is critical to maintaining battery health and productivity. As Lithium cells undergo continuous charge and discharge in their lifetime, we have to monitor their state of health, state of charge and act accordingly to increase their life span and efficiency. A Battery Management System is the process in which we monitor various parameters of each cell and take a decision for the efficient working of the battery