Nothing outlasts the long-lasting power of Energizer Ultimate Lithium Batteries. Each battery's safety-conscious, leak-proof design gives you confidence that your most-loved devices are protected against leaks and corrosion. These batteries can perform in extreme temperatures (from -40F to 140° F) AND last in storage for up to 10 years… making Ultimate Lithium batteries the clear choice to dependably power the essential devices in your life (2 Pack).