The 2 Packs of Energizer MAX 9V Batteries are single-use 9 volt alkaline batteries manufactured in the United States by Energizer. These batteries have an expiration date listed on the package and come in a convenient 2 pack unit. With a reliable brand like Energizer, these batteries are sure to provide long-lasting power for various consumer electronics and devices requiring a 9V voltage source. Perfect for everyday use and essential for keeping devices powered up.