Nothing outlasts Energizer Ultimate Lithium AA Batteries. These household batteries are not only the world's longest lasting AA batteries, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40°F to 140°F. Use these AA lithium batteries to power a variety of high tech and household items, whether you need smoke detector batteries, camera batteries, or double A batteries to power your child's favorite toys and games. Ultimate Lithium Energizer AA batteries weigh one-third less than standard alkaline batteries, and they hold power for up to 20 years in storage, letting you keep a ready supply available when you need them. To ensure your favorite devices operate at their peak performance, depend on Energizer Ultimate Lithium batteries for work, play and home.