This Listing is for 50 AA Energizer And 50 AAA Energizer Max Alkaline batteries Features -World's 1st Zero Mercury AA/AA Alkaline Battery: Energizer is a leader in the industry in powering people's lives responsibly Energizer MAX AA/AAA batteries now hold their power for 10 years. Energizer proprietary Power Seal Technology is assurance that you'll have power you can rely on, whether you're capturing baby's first steps, competing in the final level of a video game marathon, or preparing for a storm on the horizon. A 10 year shelf life means that you can be confident you'll always have power when you need it most. that's positive energy!