Long-lasting power up to 25 years shelf life in storage Performs in extreme temperatures rated from -40C to 60C 100% leak proof* (based on standard use) Energizer Ultimate Lithium AAA batteries (1.5V, FR03) are premium lithium cells built for high-tech and critical devices that require reliable, long-lasting power. These lightweight AAA lithium batteries deliver stable voltage, long shelf life and dependable performance in a wide range of temperatures ideal for cameras, smart home devices, thermostats, security cameras, game controllers and other electronics. The pack contains two AAA Ultimate Lithium batteries and is labelled with standard safety warnings and manufacturing origin details (Made in Singapore). The package also notes "No Mercury Added." Warnings & handling: Risk of fire or explosion if installed incorrectly, disassembled, charged, crushed, mixed with used or other battery types, or exposed to fire/high temperature. Keep out of reach of children. Keep in original package until ready to use. Dispose of used batteries promptly. If swallowed, seek medical attention.