Duracell Coppertop 9 Volt alkaline batteries deliver reliable, long-lasting power to your everyday devices throughout the home, such as toys, remote controls, smoke detectors, flashlights, calculators, clocks, radios, wireless mice, keyboards, and more. With a guarantee of 5 years in storage, you can rest assured they will be ready when you need them most. Duracell also guarantees these batteries against defects in material and workmanship, ensuring quality you can trust. From storm season to holiday needs, Duracell is the #1 trusted battery brand for all your essential devices. You can count on Duracell for ultra reliable power, keeping your life running smoothly in the moments that matter most.