We make our batteries in Fennimore, WI†, so you can rely on them in offices and work sites around the world. Rayovac Ultra Pro batteries are long lasting — plain and simple. Ultra Pro D alkaline batteries perform in high use equipment like 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, you can depend on Rayovac Ultra Pro for the long haul. †with US and global parts