The storage requirements for lithium-ion batteries are a mix of the right ventilation, managed humidity level, and location regulation. Designed to contain, protect, and regulate the conditions under which batteries are stored and charged, these cabinets combine technical precision with regulatory compliance to reduce the risk of. Lithium-ion batteries need a battery room if their capacity exceeds 20 kWh, according to fire codes. NFPA 855 outlines ventilation and safety requirements. Also, refer to NFPA 70E for further safety guidelines, and ensure proper exhaust ventilation. Because of a propensity to selfâheat, properly storing lithium batteries is necessary to avoid fires that can harm you and your property.