Energizer® Max® batteries can provide long lasting energy* and they also lock in energy for up to 5 years** so you can rely on your batteries to be ready when you are - that\'s positivenergy!™ - Long lasting - Long lasting power when you need it* - Reliable - Holds power up to 5 years** - Responsible - From the manufacturers of the world\'s 1st*** Zero Mercury Alkaline battery - Ideal for: Low-drain household devices * versus Carbon Zinc **Shelf life ***commercially available since 1991