Panasonic CR1620 Lithium Coin Cell is a perfect replacement battery for a wide range of devices. Featuring a powerful Lithium Manganese Dioxide chemistry, this impressive battery produces 3 Volts of power and holds a sizable 75 mAh charge, providing all the power needed to run your small high-performance electronics. The CR1620 also features an incredibly low self-discharge rate, giving it a shelf life of 10 years and allowing it to kept around the house until it's needed.