Ultra Pro alkaline batteries are long lasting and perform in high use equipment like smoke detectors, flashlights and wireless devices. The packaging is easy to open and helps protect and organize the batteries so they're ready when you need them. Plus, with a 10-year shelf life\/5-year shelf life for 9V, you can depend on Rayovac Ultra Pro for the long haul. Rayovac Ultra Pro alkaline batteries deliver long lasting power and savings, with packaging specifically designed for today's industrial customer. They are engineered for professional use to deliver dependable performance.