This part of the IEC 62485 applies to the installation of one or more stationary secondary batteries having a maximum aggregate voltage of d.c. 1500 V (nominal) to any d.c. part of the power network and describes the principal measures for protections during normal operation or those that can be expected under fault conditions against hazards generated from: electricity, short circuits, electrolyte, gas emission, fire, explosion. This International Standard provides requirements on safety aspects associated with the installation, use, inspection, and maintenance of lithium-ion batteries used in stationary application. This standard covers industrial applications in separate closed Buildings/housings as well as in public buildings, offices and private residential / homes, maintenance and disposal of lithium-ion batteries used in stationary applications. Battery energy storage system (BESS) is an application. Batteries containing lithium metal are not covered by this standard. Examples for the main applications are: telecommunications, power station operation, central emergency lighting and alarm systems, uninterruptible power supplies, (UPS) stationary engine starting, photovoltaic systems .