The Sony CR2032 is a 3V lithium manganese dioxide battery commonly used in small electronic devices. Its specifications include a diameter of 20mm, a height of 3.2mm, and a nominal capacity of 220-225mAh. It is ideal for use in quartz watches, clocks, PC motherboards, and other devices. The battery is known for its reliability, leak resistance, and ability to work in temperatures ranging from -20 to +60 degrees Celsius. It is available in various pack sizes, such as a pack of 5, and is widely used in different electronic applications The capacity of the Sony CR2032 battery is nominal 220mAh to 225mAh with a 2.0V cutoff . This is the standard discharge current of 0.2mA . Other sources also confirm that the nominal capacity of the Sony CR2032 battery is 220mAh