Panasonic CR2032 batteries are a coin style of cell which delivers a voltage of 3V and a high capacity of 210mAh. With a diameter of 20mm and height of only 3.2mm, these are high energy density cells. They have a weight of 3.1g. The lithium manganese technology means that these batteries provide a much more stable output than alkaline equivalents. They are interchangeable with the Duracell DL2032 and the Energizer 2032 cells. These batteries are ideal for low drain devices such as watches, alarms and computer memory backup systems and the compact, lightweight design makes them an excellent choice for portable and hand held devices.