Duracell Coppertop All-Purpose D alkaline batteries are not only dependable; they are long-lasting. These D batteries come with a 12-year guarantee in storage. You can rest assured they will be ready when you need them during storm season or power outages. Duracell Coppertop batteries deliver reliable power to everyday devices like toys, remote controls, flashlights, calculators, clocks, radios, wireless mice and keyboards, and more. Available in AA, triple A, D, 9V sizes, and size C batteries. Duracell guarantees against defects in material and workmanship, and will repair or replace any damaged device due to a battery defect. From storm season to holidays, Duracell is the #1 trusted battery brand.