The Energizer Ultimate Lithium AA 2X4 Pack is a set of 8 high-quality batteries with an expiration date of 12/2050. These 1.5V batteries are sealed and made with lithium chemical composition, providing long-lasting power for various electronic devices. With a capacity of 1.3 Ah, this pack offers reliable and consistent performance for all your power needs. Perfect for use in a wide range of consumer electronics, these Energizer batteries are a dependable choice for your everyday use.