The use of fast charging for lithium-ion batteries helps increase the autonomy of applications; however, it also accelerates the aging of these components. The performance and lifetime of lithium-ion batteries depend on several key factors, such as temperature, discharge rate, and charging protocols. The objective of this research is to deepen the understanding of lithium-ion battery aging mechanisms during fast charging and to develop an optimization strategy that identifies an effective compromise between charging time, battery aging, and energy efficiency. The objectives focus on analyzing the electrochemical behavior of lithium-ion batteries in order to capture the impact of fast charging on degradation phenomena and performance. This analysis requires studying both the initial operating mechanisms and their evolution over time, enabling the formulation of optimized charging strategies that extend battery lifetime while maintaining fast and efficient operation.