Duracell Coppertop 9V Battery, 2 Count, Smoke Detector, Long-lasting

HOME SAFETY ESSENTIAL: The go-to battery for smoke detectors, carbon monoxide detectors, security sensors, alarm systems, and emergency devices. Replace annually—always have Duracell 9V ready. 5-YEAR STORAGE GUARANTEE: Duracell Coppertop 9V batteries are guaranteed to last 5 years in storage. Always have a fresh battery ready for your annual smoke detector check. PROFESSIONAL-GRADE RELIABILITY: Also powers walkie-talkies, guitar effect pedals, multimeters, professional test instruments, and AED trainers—where reliable power isn't negotiable. QUALITY ASSURANCE: Every Duracell battery is guaranteed against defects in material and workmanship. The brand trusted by those who take safety seriously. ANNUAL REMINDER PACK: Whether you need 1 or 4, stock enough for every smoke detector in your home. Test them twice a year. Replace with Duracell every year.