Considerations for Selecting and Sizing Batteries

Selection and sizing of storage batteries are often thought of as simply applying a formula to a load profile; however, in practice, when selecting an optimum battery many factors should be considered. These factors include battery type, plate material, plate construction, specific gravity, battery application, and so forth. Various applications will be discussed and illustrative examples will be provided as required. Although the emphasis of this paper will be on stationary batteries, uninterruptible power supply (UPS) and photovoltaic system batteries are also discussed. The guidance provided will enable the user to understand the requirements for a specific application and aid in selecting an optimum battery.