Duracell Lithium Coin batteries provide reliable, long-lasting power for your specialty devices, so you can be confident these lithium coin batteries will be ready when you need them. Duracell has a tradition of investing in extensive development in features that can help keep children safe, specifically for its lithium coin batteries. Its latest innovation is a bitter coating on the cell that helps to deter accidental ingestions. Duracell also features child secure packaging which makes it nearly impossible to open with bare hands. For Electronics. Battery Type: Lithium; Battery Size: 2032; For Use With: Electronics; Voltage: 3 V.