Keep your electronics functioning with the Energizer CR1632 3-Volt Lithium Coin Battery. It delivers power to various devices such as keyless entry, toys, heart rate monitors and more. Simple to install, the CR1632 3 volt battery delivers dependable and long-lasting power. It is available in a convenient two-pack of five batteries, so you can stock up and keep a fresh set handy for emergencies. Keep this Energizer lithium battery packed with your camping gear for peace of mind when the sun goes down at the campsite. This one-time use coin cell stores well in a cabinet or drawer until needed.