The Rayovac 9V High Energy Alkaline Batteries (2 Pack) are designed to deliver long-lasting and reliable power for your everyday devices. With a chemical composition of alkaline and a nominal voltage of 9 volts these batteries ensure consistent performance. The product comes in a convenient stick style configuration ideal for easy installation and replacement. Although not rechargeable these batteries boast a rated capacity of 565 mAh providing dependable energy for a variety of applications. Packaged in a compact two-pack they are perfect for capturing impulse purchases while taking up minimal storage space. Plus Rayovac's traditional carded packs are designed to hold power for up to 5 years making them a wise investment for future needs.