Power your favorite devices with these Energizer Eco Advanced AAA Batteries UNH12BP-4 the world s first AA and AAA battery made with recycled batteries. They deliver high performance as well as more responsible energy (versus Energizer s other alkaline batteries which do not contain recycled batteries). The Energizer batteries come in a pack of four and are made of high-performance material that is transformed from used batteries. Each cell contains 4 percent recycled batteries. Four energy rings boost performance and make this a long-lasting alkaline battery. They hold power up to 12 years in storage so they re ready when you need them.