Energizer MAX batteries provide long-lasting power for everyday devices such as smoke detectors, torches and R/C toys. They have a 10-year PowerSeal shelf life and 0% Mercury content. MAX batteries have the long-lasting power and protection you'd expect from Energizer. They hold power for up to 10 years whilst in storage to power devices when you need to. PowerSeal technology offers reliable power and is suitable for toys and digital cameras. Long lasting and reliable, Energizer MAX batteries provide dependable power for household devices. With Power Seal technology, they lock in energy for up to 5 years - so they're always ready to go.