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.