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 -40°F 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. Battery Type: Lithium; Battery Size: 9V; Voltage: 9 V; Material(s): Lithium Manganese Dioxide.