The Energizer CR2025 BP2 Li-ion Batteries are suitable for long-lasting dependable performance in speciality devices like heart rate monitors remotes keyless entry systems calculators and toys. This battery pack is also a great choice if you need a new car key battery. Each lithium battery holds power for up to 10 years while in storage and can withstand temperatures from -30º to 60º. They’re also responsibly designed with zero mercury and child-resistant safety packaging. Get the most from your essential devices with the reliable long-lasting power from Energizer. Keep away from children as flat batteries are dangerous if ingested.