Although smoke alarms with lithium batteries are often marketed as ‘10-year alarms’, on average, these alarms do not remain functional for 10 years. This paper describes self-reported reasons for non-working lithium-battery alarms 6–9 months following a smoke alarm installation programme. Data presented are for a cohort of 754 homes that participated in the installation programme and subsequently completed follow-up. A total of 1487 smoke alarms were installed. At follow-up, 126 alarms (8%) were missing and 37 (3%) were observed to be non-working. Of the non-working alarms, residents reported that they had been disabled 57% of the time. Reasons for disabling the alarms most often included that the battery was chirping (38%) or that it sounded while someone was cooking (24%). Smoke alarm installation programmes using lithium-battery alarms should consider highlighting education about smoke alarm maintenance, the hush feature and resources to replace alarms that malfunction soon after installation.
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Funding Funding for this research was provided to the Johns Hopkins Center for Injury Research and Policy by Centers for Disease Control and Prevention (1R18CE001339): Dissemination of Research in Child Safety; and NIH/National Institute for Child Health and Human Development (1R01 H059216): Community Partnerships for Child Safety.
Competing interests None declared.
Ethics approval Johns Hopkins School of Public Health IRB.
Provenance and peer review Not commissioned; externally peer reviewed.
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