The Energizer Ultimate Lithium AA Batteries are a long-lasting and reliable power solution for a variety of electronic devices. With an expiration date of 12/2050, these batteries provide consistent energy for up to 10 years. Made with lithium-based technology, these 1.5V batteries offer superior performance compared to traditional AA batteries. Each pack includes 16 batteries, ideal for use in consumer electronics and other devices that require long-lasting power.