Get the most from your essential devices with the reliable, long-lasting power you’d expect from Energizer. Stock up on Energizer CR2025 batteries for watches and wearables, as well as batteries for key fobs, remotes and alarm sensors. This battery pack is also a great choice if you need a new car key battery. Each Energizer lithium CR2025 battery holds power for up to 10 years while in storage and can withstand temperatures from -30o to 60oC. They’re also responsibly designed with zero mercury and child-resistant safety packaging.