This new edition includes approximately 30% new materials covering the following information that has been added to this important work:- extends the contents on Li - ion batteries detailing the positive and negative electrodes and characteristics and other components including binder, electrolyte, separator and foils, and the structure of Li - ion battery cell. Nickel - cadmium batteries are deleted.- adds a new section presenting the modelling of multi - mode electrically variable transmission, which gradually became the main structure of the hybrid power - train during the last 5 years.