24 pack of Energizer MAX alkaline AA batteries and 24 Pack of Energizer MAX alkaline AAA batteries Our no.1 longest lasting Max battery powers everyday devices Leak resistant construction protects your devices from leakage of fully used batteries for up to 2 years. Bonus: it's guaranteed Holds power up to 12 years in storage so you're never left powerless From the makers of the No. 1 longest lasting AA battery (Energizer Ultimate Lithium), and the Energizer Bunny