Rely on Energizer MAX batteries for lasting performance in all your everyday devices. The Energizer MAX series is known for its enduring power and innovation. They maintain their performance during storage for up to 10 years, ensuring you have power available when you need it most. Additionally, MAX AA batteries offer leak protection for up to 2 years after being fully used, safeguarding your devices. Count on the long-lasting performance and device protection for your toys, flashlights, wireless mice, and other high-quality devices, just as you would expect from Energizer. Up to 2 years for fully depleted batteries in devices.