8-pack of Energizer Ultimate Lithium AA batteries Energizer Ultimate Lithium is the #1 Longest-Lasting AA Battery Leak-proof construction protects the devices you love (based on standard use) Powers your most critical devices-ideal for your smart home devices, outdoor surveillance systems, digital cameras, and handheld games Holds power up to 20 years in storage for trustworthy backup energy, so you're always prepared Performs in extreme temperatures, from -40F to 140° F, for year-round, indoor and outdoor use See why nothing outlasts Energizer in high-tech devices Nothing outlasts the long-lasting power of Energizer Ultimate Lithium AA 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.
I usually use rechargeables for everything, but the shelf life on these is exceptional. They outlast alkaline disposables and Lithium Ion and nickel metal hydride rechargeables -- great for smoke detectors. They also operate well at extremely low temperatures, so they're great for car flashlights/warning lights, outdoor weather sensors, etc., especially in climates like New England (they operated well at sub-zero temps this winter where NiMH and alkalines failed)..