Long-lasting power and innovation are what Energizer MAX PLUS is all about. Energizer MAX PLUS 9 Volt batteries hold power for up to 5 years while in storage, so you have power when you need it most. Your most demanding devices stay powered up with the long-lasting energy you expect from Energizer. 1-pack of Energizer MAX Alkaline 9V batteries, Made to last. Not to leak, Non-stop energy for your non-stop family’s must-have devices—think smoke detectors, toys, remote control cars, clocks, and more, Holds power up to 5 years in storage—so you’re never left powerless, From the makers of the world’s longest-lasting AA battery: Energizer Ultimate Lithium, Energizer created the world’s first zero mercury AA alkaline battery, commercially available since 1991,