Energizer Industrial 9V batteries deliver long-lasting power with a lithium composition that performs reliably in extreme temperatures ranging from minus 40 to 140 degrees Fahrenheit. This case of 72 batteries is 25 percent lighter than traditional alkaline 9V batteries, making them suitable for portable devices. Designed to be 100 percent leak-proof, they help protect sensitive and expensive equipment. The batteries are commonly used in industrial applications where durability and consistent power output are essential.