In the quest for more efficient energy storage solutions, rechargeable batteries such as nonaqueous lithium-ion and lead-acid variants have emerged as pivotal technologies. However, limitations in safety, cost, and reserve capacity hinder their widespread application, which has led to the search for safer alternatives with higher energy density. The growing demand for high-performance energy storage devices has driven extensive research into novel materials for battery technologies. This chapter focuses on MXenes, a class of two-dimensional (2D) materials composed of transition metal carbides, nitrides, and carbonitrides, which are showing great promise for enhancing battery performance. With their exceptional conductivity, large surface area, and tunable physicochemical properties, MXenes provide significant advantages for energy storage applications. The discussion delves into MXene synthesis methods, their structural characteristics, and electrochemical properties, offering a solid foundation for understanding their potential in a range of battery systems. The applications section explores how MXenes have been incorporated into various battery technologies, including lithium-ion, sodium-ion, potassium-ion, and lithium-sulfur batteries, demonstrating their versatility. Additionally, the chapter highlights recent advancements in the field, as well as challenges related to the use of MXene-based materials, focusing on their role in improving energy storage capacity, stability, and overall battery lifespan.