Reliable, long-lasting power for your medical, electronic, security, and other compatible devices, Duracell Lithium Coin batteries are guaranteed for 10 years in storage, so you can be confident they'll be ready when you need them. Duracell invests in the extensive development of features that can help keep children safe, especially for its Lithium Coin batteries which feature child-secure packaging which makes it nearly impossible to open with bare hands. From storm season to medical needs to the holidays, Duracell is the #1 trusted battery brand.