Curtis Instruments, Inc. has undertaken to produce and make available this text as a part of its effort to more completely understand batteries and their use with electric fork lift trucks and other industrial electric vehicles, and to share that understanding with others related to the material handling industry.

In the future, we hope to distribute supplements to this book in the form of "application notes" addressing such areas as battery manufacturers' rating systems, how they compare and concepts of standardization of graphical displays for test data; a universal energy units conversion table; etc.

We welcome reader comments, additions, corrections (if any), etc. Keeping the information accessible and flowing will have a most definite positive impact on all our related industries.