Duracell® Lithium Coin batteries provide reliable, long-lasting power for your electronic, security, medical, and other compatible devices. These batteries are guaranteed for 10 years in storage, so you can rest assured they will be ready when you need them. Duracell® has a tradition of investing in the extensive development of features that can help keep children safe, especially for its Lithium Coin batteries. With its latest innovation these battery cells are bitter on both sides! The non-toxic bitter coating on the cell that is designed to help discourage swallowing, is now applied on both sides of the cell. Duracell® Lithium Coin batteries also come in a child-secure packaging which is nearly impossible to open without scissors. From storm prep to holiday needs, Duracell® is the # 1 trusted battery brand.