Lithium-ion battery are rechargeable batteries used in various applications, including smartphones, laptops, and electric vehicles. They offer high energy density, making them lightweight and capable of holding a significant amount of charge. This technology relies on lithium ions moving between positive and negative electrodes to store and release energy efficiently. Their versatility, long cycle life, and low self-discharge rate have made them the preferred choice for portable electronics and electric mobility. However, proper management, cooling, and recycling are crucial to maximize their performance and minimize environmental impact, as lithium-ion batteries can be sensitive to misuse and overheating.