Duracell Lithium Coin CR2016 3 Volt 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 the CR2016 3 Volt 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 CR2016 3 Volt 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.