Power supplies and standby batteries
A reading of NFPA 72 10.6 as it is commonly cited on an inspection report. The reading explains the section; it does not certify a building or close a citation. The inspector's finding and the code text govern.
MatchExact section: the decoder holds a reading for NFPA 72 10.6.
Evidence reviewReading prepared from the published text, NFPA 72 2025 edition; readings dated Oct 14, 2026; line-by-line source check pending. Text: NFPA free access (nfpa.org).
AdoptionWhether this standard is in force depends on the state or city that adopts it, and on the edition adopted. The decoder reads it against any of the 51 state records.
What it coversThe secondary supply must carry the system for 24 hours in standby plus the alarm period; batteries are tested and replaced per the standard and the manufacturer.
What usually closes itLoad-test the batteries; replace any past the manufacturer’s life or failing the test.
Who can do the workLicensed fire alarm contractor (licensing differs by state), or qualified in-house staff for the tasks NFPA 72 allows
Proof at re-inspectionBattery test results and dates.
Questions to ask next: which edition and section the finding is written against, in writing; what exactly was observed and what the inspector expects at re-inspection; the correction deadline on the notice. Disagree with the reading of the code? Ask the inspector for the section and edition in writing, then the fire or building official for a written interpretation.