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This paper gives an overview of the 2007 revision of IEEE Std 937-2000 – IEEE Recommended Practice for Installation and Maintenance of Lead-Acid Batteries for Photovoltaic (PV) Systems, and its purpose. It discusses some of the basic differences between photovoltaic-system battery requirements and those of traditional stationary standby battery systems. Of particular interest to the audience is how a battery’s application and environment affect the recommended practices. Photovoltaic (PV) installations differ from industrial standby installations—such as telecommunications, uninterruptible power supplies, and utilities—in several key areas, including charge and discharge rates, depth of discharge, state of charge, and application temperature. Despite using the same lead-acid battery types, such conditions require changes in how the batteries should be installed and maintained. IEEE Std 937 can assist in maximizing battery life for those with atypical industrial applications that may have some of the same characteristics as a pure PV installation.