Energizer batteries are world renowned for their high quality. These Energizer Lithium coin cell batteries can be used to power electronic devices such as personal care devices, calculators, remote controls, keys and much more. Lithium batteries are lighter than other batteries. Each battery has a voltage of 3 V, a 235 mAh capacity and measures 20 mm in width and 3.2 mm in height. It is sold in packs of 2.