Get the most from your essential devices with the reliable, long-lasting power you’d expect from Energizer. Pack of two, stock up on the Ultimate Lithium batteries for long-lasting, dependable performance in speciality devices like heart rate monitors, remotes, keyless entry systems, glucose monitors, toys and scales. This battery pack is also a great choice if you need a new car key battery. These lithium batteries hold power for up to 12 years while in storage and can withstand temperatures from -30º to 60ºC, for CR2032 3V battery power you can always depend on. Each lithium CR2032 battery is responsibly designed with zero mercury and secured in child-resistant packaging.