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Section R327 Stationary Storage Battery Systems
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Stationary storage battery system shall comply with the provisions of this section.
Stationary storage battery systems shall be listed and labeled for residential use in accordance with UL 9540.
Exceptions:
- Where approved, repurposed unlisted battery systems from electric vehicles are allowed to be installed outdoors or in detached sheds located not less than 5 feet (1524 mm) from exterior walls, property lines and public ways.
- Battery systems that are an integral part of an electric vehicle are allowed provided that the installation complies with Section 625.48 of NFPA 70.
- Battery systems less than 1 kWh (3.6 megajoules).
Stationary storage battery systems shall be installed in accordance with the manufacturer's instructions and their listing, if applicable, and shall not be installed within the habitable space of a dwelling unit.
Indoor installations of stationary storage battery systems that include batteries that produce hydrogen or other flammable gases during charging shall be provided with ventilation in accordance with Section M1307.4.
Stationary storage battery systems installed in a location subject to vehicle damage shall be protected by approved barriers.