This present work meets the need for a simple, practical book on accumulator construction and management, and is addressed to all, whether professionals or amateurs, who use accumulators or who are interested in them. Contents Include: The Electric Current, Principle of the Accumulator, Construction of Accumulators, Instructions on Erecting and Starting an Accumulator Plant, Managing, Maintaining and Repairing an Accumulator Plant, Charging Accumulators from Direct Current Sources, Charging Accumulator from Alternating Current Sources, The Use of the "Booster" in Accumulator Plants, Various Types of Accumulators Described, Definitions of Chief Terms Relating to Accumulators, Home-made Pocket Accumulators. This book contains classic material dating back to the 1900s and before. The content has been carefully selected for its interest and relevance to a modern audience.