Energizer AA Lithium Battery, 4-Pack is known for its exceptional performance and long-lasting power. These batteries are designed to deliver reliable energy for a wide range of high-tech and household devices. Featuring a leak-resistant construction, they help prevent potential damage from leaks, ensuring safe and dependable operation. These batteries perform exceptionally well in extreme temperatures, functioning effectively from as low as -40 degrees Fahrenheit to as high as 140 degrees Fahrenheit. I for powering smoke detectors, cameras, toys, and other gadgets, they provide stable and consistent power output you can trust. Model Number: L91BP-4