Battery System Modeling provides the latest advances on the modeling of lithium-ion batteries. Offering step-by-step explanations, the book systematically guides the reader through the modelling of state of charge estimation, state of energy prediction, state of power evaluation, state of health estimation, and active control strategies. Using applications alongside practical case studies, each chapter also shows the reader how to use the modeling tools provided. Moreover, the chemistry and characteristics are described in detail, and algorithms are provided in every chapter, providing everything needed for accurate and reliable modelling. Providing a technical reference on the design and application of Li-ion battery management systems, this book is an ideal reference for researchers involved in all aspects of batteries and energy storage devices at various scales. Moreover, the step-by-step guidance and comprehensive introduction to the topic makes it accessible to audiences of all levels, from experienced engineers to graduates.