Energizer is all about longer lasting power and innovation. They made the whole Energizer MAX family of batteries to really put that into perspective. Among the Energizer MAX family is the Energizer D2 Alkaline General Purpose Battery. These D batteries made by Energizer offer up to an incredible 10 year shelf life. That and the fact that their proprietary Power Seal Technology is used in these batteries make sure that you can always rely on the energy delivery to be the best. The Energizer MAX Alkaline Batteries are long lasting, dependable, and can function across a wide array of appliances that you have in your home. Energizer is an industry leader and with good reason. From creating the world's first ever mercury free batteries to being where they are now with the D2 Alkaline Battery, they have come a long way.