For Multipurpose - AAA - 1.5 V DC - 2 / PackNothing 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 20 years... making Ultimate Lithium batteries the clear choice to dependably power the essential devices in your life.