This document provides recommended design practices and procedures for storage, location, mounting, ventilation, instrumentation, preasembly, assembly, and charging of valve-regulated lead-acid (VRLA) batteries in stationary applications. As part of its 5-year life cycle, the Recommended Practice should be updated to be consistent with similar Recommended Practices. The general understanding of VRLA batteries has improved since the original release of this document, and this will be reflected in the update. Revision Standard - Superseded. This recommended practice provides guidance for the installation and installation designof valve-regulated lead acid (VRLA) batteries. This recommended practice is intended for all float-service stationary installations. However, specific applications, such as emergency lighting units and semi-portable equipment, may have other appropriate practices and are beyond the scope ofthis recommended practice. Alternate energy applications are not covered.