{"pageUrl":"https://www.comparethespecs.com/technology/smart-home-security/which-smart-smoke-detector-has-the-longest-battery-life","lastUpdated":"2026-09-13","totalProducts":11,"niche":"Which smart smoke detector has the longest battery life?","description":"Which smart smoke detector has the longest battery life?","products":[{"brand":"X-Sense","model":"Interconnected Wireless Smoke and CO Detector","price_gbp":33.2,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","connectivity":"Wireless RF 869.25-869.3 MHz","temperature_range":"4.4-37.8°C","carbon_monoxide_detection":"Electrochemical sensor; 50 ppm, 100 ppm, and 300 ppm detection levels"},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/X-SENSE-10-Year-Battery-Wireless-Interconnected-Smoke-and-Carbon-Monoxide-Detector-with-LCD-Display-and-LED-Light-1-Pack-SC07-W/340948900","currency":"USD","source_country":"US","price":44.99,"price_gbp":33.2,"scraped_at":"2026-08-31T05:23:07.018212"}],"summary":"The X-Sense SC07-W is a wireless interconnected detector combining photoelectric smoke detection with electrochemical carbon monoxide detection. Its sealed 10-year lithium battery and ability to connect with up to 24 compatible alarms make it suitable for whole-home protection without hardwiring or an app.","ideal_for":"This product suits the question because its sealed 10-year battery provides long-term operation without battery replacement, making it a strong choice for longest battery life among interconnected detectors."},{"brand":"Kidde","model":"P4010DCS-W (Kidde 10-Year Worry-Free Battery Powered Interconnected Smoke Detector with Voice Alerts, 2-Pack)","price_gbp":42.1,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","connectivity":"Radio frequency wire-free interconnectivity"},"confidence_score":null,"sources":[{"label":"Home Depot","url":"https://www.homedepot.com/p/Kidde-10-Year-Worry-Free-Battery-Powered-Interconnected-Smoke-Detector-with-Voice-Alerts-2-Pack-P4010DCS-W-21028749/302682495","currency":"USD","source_country":"US","price":89.97,"price_gbp":66.39,"scraped_at":"2026-06-24T15:47:48.736294"},{"label":"Crown Supply","url":"https://www.crownsupply.com/itemdetail/04787127308","currency":"USD","source_country":"US","price":57.06,"price_gbp":42.1,"scraped_at":"2026-06-24T15:47:48.736294"}],"summary":"This Kidde kit includes two 10-year, sealed-battery smoke alarms with voice alerts. The alarms are interconnected wire-free using a proprietary radio signal, so connected units sound when one alarm detects smoke. They also provide supervised interconnect so the system can alert if an alarm loses connection.","ideal_for":"For the longest battery life, choose this Kidde model because it uses a sealed 10-year lithium battery with no battery replacement during the alarm's life."},{"brand":"First Alert","model":"SC5 Smart Smoke and Carbon Monoxide Alarm Battery Powered","price_gbp":95.9,"origin_country":null,"specs":{"alarm_volume":"85 dB at 10 ft","connectivity":"Wi-Fi","carbon_monoxide_detection":true},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/First-Alert-SC5-Battery-Smart-Smoke-and-Carbon-Monoxide-Alarm-FSMCO600NVCL1/337593875","currency":"USD","source_country":"US","price":129.96,"price_gbp":95.9,"scraped_at":"2026-08-31T05:20:47.398548"},{"label":"Best Buy","url":"https://www.bestbuy.com/product/first-alert-smoke-and-carbon-monoxide-detector-battery-powered-white/JJ8Z8VQ4FV/sku/6633004","currency":"USD","source_country":"US","price":129.99,"price_gbp":95.92,"scraped_at":"2026-08-31T05:20:47.398548"}],"summary":"The battery-powered SC5 is a smart combination smoke and carbon monoxide alarm with photoelectric and electrochemical sensors, voice alerts, wireless interconnectivity, and mobile notifications through the First Alert and Google Home apps. It suits households seeking app-connected fire and CO monitoring without hardwiring, especially those replacing Google Nest Protect alarms.","ideal_for":"It is a strong fit for someone seeking a smart smoke detector with long battery life because it uses six replaceable 3V lithium CR123A batteries, though the manufacturer does not state a battery-life duration."},{"brand":"First Alert","model":"SM210V 10-Year Battery Smoke Alarm with Voice Alerts","price_gbp":33.19,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10"},"confidence_score":null,"sources":[{"label":"Lowe's","url":"https://www.lowes.com/pd/First-Alert-FA-10YR-BATT-PHOTO-SMK-W-VOICE-8E/5014520195","currency":"USD","source_country":"US","price":44.98,"price_gbp":33.19,"scraped_at":"2026-08-31T05:20:47.398548"}],"summary":"The First Alert SM210V is a photoelectric smoke alarm with a sealed 10-year lithium battery, voice and location alerts, Precision Detection technology, and an end-of-life warning. It suits homeowners who want long-lasting, low-maintenance smoke protection without hardwiring or battery replacements.","ideal_for":"This product suits the question Which smart smoke detector has the longest battery life because its sealed lithium battery lasts 10 years and it adds voice and location alerts for easier emergency guidance."},{"brand":"X-Sense","model":"XP0A-iR Smart Smoke and CO Detector","price_gbp":27.29,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"1","connectivity":"2.4 GHz Wi-Fi","temperature_range":"40-100°F","carbon_monoxide_detection":"Electrochemical sensor"},"confidence_score":null,"sources":[{"label":"X-Sense","url":"https://www.x-sense.com/products/x-sense-wifi-smoke-and-co-detector-xp0a-ir","currency":"USD","source_country":"US","price":36.99,"price_gbp":27.29,"scraped_at":"2026-08-31T05:23:07.018212"}],"summary":"This smart combination detector uses photoelectric smoke sensing and electrochemical carbon monoxide detection, with app alerts over 2.4 GHz Wi-Fi. It suits homeowners who want remote notifications, voice alerts, a real-time CO display, and a replaceable battery.","ideal_for":"It is not ideal for the question of longest battery life because its replaceable CR123A battery lasts 1 year under weekly testing."},{"brand":"Kidde","model":"RGCUAR-RW Ring App Enabled Smart Smoke and Carbon Monoxide Detector","price_gbp":55.32,"origin_country":null,"specs":{"alarm_volume":"85 dB at 10 ft","connectivity":"Wi-Fi","temperature_range":"40°F to 100°F","carbon_monoxide_detection":"Electrochemical sensor"},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/Kidde-Hardwired-Smart-Smoke-and-CO-Detector-Plus-AA-Battery-Ring-App-Enabled-Wireless-Interconnect-Voice-Alerts-RGCUAR-RW-21033275/334373575","currency":"USD","source_country":"US","price":74.97,"price_gbp":55.32,"scraped_at":"2026-08-31T05:23:07.018212"},{"label":"Newegg","url":"https://www.newegg.com/kidde-rgcuar-rw/p/09H-01RJ-00217","currency":"USD","source_country":"US","price":108.98,"price_gbp":80.42,"scraped_at":"2026-08-31T05:23:07.018212"}],"summary":"This hardwired smart detector uses two AA batteries for backup and connects to the Ring App over 2.4 GHz Wi-Fi. It detects both smoke and carbon monoxide, provides real-time notifications and voice alerts, and suits homeowners who want smart monitoring with whole-home interconnectivity.","ideal_for":"It suits the question because its hardwired design provides continuous power, while two AA backup batteries maintain protection during short-term outages, although a battery-life figure in years was not found."},{"brand":"X-Sense","model":"SC07 Wireless Smoke and Carbon Monoxide Alarm","price_gbp":31.73,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","connectivity":"Standalone","temperature_range":"40-100°F (4.4-37.8°C)","carbon_monoxide_detection":"70 ppm for 60-240 minutes; 150 ppm for 10-50 minutes; 400 ppm for 4-15 minutes"},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/X-SENSE-10-Year-Battery-Smoke-and-CO-Alarm-with-LCD-Display-and-LED-Light-1-Pack-SC07-SC07/340947462","currency":"USD","source_country":"US","price":43.0,"price_gbp":31.73,"scraped_at":"2026-08-31T05:23:07.018212"}],"summary":"The X-Sense SC07 is a standalone combination alarm with a 10-year sealed battery, photoelectric smoke detection, electrochemical carbon monoxide detection, and an LCD that displays real-time CO concentration. It suits homeowners who want long-term fire and CO protection without replacing batteries or setting up a wireless network.","ideal_for":"This model suits the search for a smart smoke detector with the longest battery life because it provides 10 years of battery life, although its standalone design does not provide app or Wi-Fi connectivity."},{"brand":"Kidde","model":"30CUD10-V DETECT Combo Smoke and CO Alarm, 10-Year Battery Powered","price_gbp":51.63,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","temperature_range":"40°F to 100°F","carbon_monoxide_detection":"Electrochemical sensor"},"confidence_score":null,"sources":[{"label":"The Home Depot","url":"https://www.homedepot.com/p/Kidde-10-Year-Battery-Powered-Smoke-and-Carbon-Monoxide-Detector-with-Voice-Alerts-30CUD10-V-21032779/328175570","currency":"USD","source_country":"US","price":69.97,"price_gbp":51.63,"scraped_at":"2026-08-31T05:23:07.018212"},{"label":"WebstaurantStore","url":"https://www.webstaurantstore.com/kidde-detect-series-30cud10-v-battery-powered-smoke-and-carbon-monoxide-alarm-with-voice-alert-and-10-year-battery-21032779/47221032779.html","currency":"USD","source_country":"US","price":74.49,"price_gbp":54.97,"scraped_at":"2026-08-31T05:23:07.018212"}],"summary":"This battery-powered combination alarm detects both smoke and carbon monoxide and includes voice alerts that identify the danger. Its sealed 10-year battery, self-testing, and reduced nuisance alarms make it suitable for residential living spaces where low maintenance is important.","ideal_for":"It suits shoppers seeking the smart smoke detector with the longest battery life because its sealed battery is designed to last 10 years while providing smoke and electrochemical carbon monoxide detection."},{"brand":"First Alert","model":"SC5 Smart Smoke and Carbon Monoxide Alarm Hardwired","price_gbp":95.19,"origin_country":null,"specs":{"alarm_volume":"85 dB at 10 ft","connectivity":"Wi-Fi","temperature_range":"40°F to 100°F","carbon_monoxide_detection":"Electrochemical sensor"},"confidence_score":null,"sources":[{"label":"Home Depot","url":"https://www.homedepot.com/p/First-Alert-SC5-Hardwire-Smart-Smoke-and-Carbon-Monoxide-Alarm-FSMCO600NVACCL1/337593929","currency":"USD","source_country":"US","price":129.0,"price_gbp":95.19,"scraped_at":"2026-08-31T05:20:47.398548"},{"label":"Abt","url":"https://www.abt.com/First-Alert-SC5-Hardwire-Smart-Smoke-and-Carbon-Monoxide-Alarm-FATFSMCO600NVA/p/237990.html","currency":"USD","source_country":"US","price":129.99,"price_gbp":95.92,"scraped_at":"2026-08-31T05:20:47.398548"},{"label":"Office Depot","url":"https://www.officedepot.com/a/products/7987642/First-Alert-SC5-Hardwire-Smart-2/","currency":"USD","source_country":"US","price":129.99,"price_gbp":95.92,"scraped_at":"2026-08-31T05:20:47.398548"}],"summary":"The First Alert SC5 is a hardwired smart combination smoke and carbon monoxide alarm with a 3V lithium battery backup, Wi-Fi connectivity, mobile alerts, voice warnings, and interconnect capability. It suits homeowners replacing compatible Nest Protect alarms or building a connected home safety system.","ideal_for":"It suits buyers who want continuous hardwired protection with lithium battery backup, but it cannot be confirmed as the smart smoke detector with the longest battery life because no battery-life rating was found."},{"brand":"First Alert","model":"SMI110 10-Year Battery Smoke Alarm","price_gbp":19.89,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","connectivity":"None","carbon_monoxide_detection":false},"confidence_score":null,"sources":[{"label":"First Alert Store","url":"https://www.firstalertstore.com/store/products/first-alert-10-year-sealed-battery-smoke-alarm-smi110.htm","currency":"USD","source_country":"US","price":26.95,"price_gbp":19.89,"scraped_at":"2026-08-31T05:20:47.398548"},{"label":"Tractor Supply Co.","url":"https://www.tractorsupply.com/tsc/product/first-alert-sealed-10-year-battery-smoke-alarm-6126828","currency":"USD","source_country":"US","price":28.99,"price_gbp":21.39,"scraped_at":"2026-08-31T05:20:47.398548"}],"summary":"The First Alert SMI110 is a standalone ionization smoke alarm with a sealed 10-year lithium battery, Precision Detection technology, and a test and silence button. It suits homeowners who want simple installation, no battery replacements, and reliable smoke protection without smart-home connectivity or carbon monoxide detection.","ideal_for":"This model suits someone seeking the longest battery life because its sealed lithium battery lasts 10 years, although it is not a smart smoke detector and has no app or wireless connectivity."},{"brand":"DETECT","model":"20SD10 (DETECT Smoke Alarm, 10-Year Battery Powered)","price_gbp":23.96,"origin_country":null,"specs":{"alarm_volume":"85","battery_life":"10","temperature_range":"40 to 100 F (4.4 to 37.8 C)"},"confidence_score":null,"sources":[{"label":"Home Depot","url":"https://www.homedepot.com/p/Kidde-10-Year-Battery-Powered-Smoke-Detector-with-Photoelectric-Sensor-20SD10-21031466/328119795","currency":"USD","source_country":"US","price":32.47,"price_gbp":23.96,"scraped_at":"2026-06-24T15:47:48.736294"},{"label":"Friedman's Home Improvement","url":"https://www.friedmanshome.com/detect-smoke-alarm-with-10-year-battery-2000032716","currency":"USD","source_country":"US","price":32.99,"price_gbp":24.34,"scraped_at":"2026-06-24T15:47:48.736294"},{"label":"Buyrite Electric","url":"https://buyriteelectric.com/products/kidde-20sd10-detect-smoke-alarm-10-year-battery-powered","currency":"USD","source_country":"US","price":32.47,"price_gbp":23.96,"scraped_at":"2026-06-24T15:47:48.736294"}],"summary":"This is a DETECT smoke alarm with a sealed 10-year battery, designed to avoid battery replacements for the life of the device. It uses photoelectric smoke sensing and includes fast alerts with an 85 dB alarm and multi-color LED status. It suits homes needing reliable, long-life smoke detection without wiring.","ideal_for":"For the longest battery life, the DETECT 20SD10 is a sealed 10-year battery smoke alarm with no battery changes for 10 years."}]}