Abstract: This paper discusses the battery pack thermal management components for electric vehicles that are necessary for the batteries to operate effectively in all weather. Due to their high energy density and long-life cycle, lithium-ion (Li-ion) battery cells are utilized in electric vehicles. Operating temperature affects the Li-ion battery's performance and lifespan. Moreover, this project aims to review materials for electric vehicles battery pack casing by incorporating proper thermal management required for efficient working of batteries in any climatic conditions. Lithium-ion (Li-ion) battery cells are being used for electric vehicles because they having high density of energy and long-life cycle. Higher operating temperatures lengthen battery life and boost capacity. The use of air, water and phase change materials (PCMs) as thermal management techniques are explored and contrasted. Following comparison, a useful battery pack casing for temperature management system is discussed. In this study, we explore the phenomena of heat generation and temperature problems of Li-ion batteries