The variety and scope of primary and secondary battery applications in domestic goods and capital equipment for civilian and military uses has steadily grown over the years. Annual global sales of the battery business are exceeding £4000 million, encouraging a number of books on individual battery systems. This book is intended to bring together the key features of five electrochemical power sources. Outlining the historical background and basic principles of the direct conversion of electrochemical energy into DC electricity, this book also gives salient details of the manufacturing processes, performances under different conditions of operations and the services for which the batteries are mainly used. This books aims to provide information to graduate electrochemists, engineers working in universities and technical colleges, in Government and other technological institutions, and particularly those engaged in the development of portable power sources and in the design and use of equipment using these devices.