Battery technologies play a vital role in day-to-day life, and with the continued growth of the battery market, there is an increasing demand for a comprehensive text such as this, that encompasses aspects of electrochemistry, materials science, physical chemistry, and machine learning. Aimed at early-to-mid career battery engineers, this book addresses common problems that are likely to be encountered on the job. This book discusses several topics, including the prediction of battery longevity, how to extend battery life with machine learning algorithms, cost reduction and sustainability, and battery charging problems relating to wearables, electric vehicles, drones, smart phones, laptops, and portable devices. Designed to help readers obtain practical knowledge through intuitive explanations and broad coverage of battery topics, this one-of-a-kind book is a must have resource for practicing battery engineers throughout their career.