The Rayovac Hearing Aid Batteries Size 13 are high-quality coin cell/button batteries designed for use in hearing aids. This pack of 6 batteries has an expiry date of April 2026, ensuring a long-lasting and reliable power source for your hearing aid. With the trusted Rayovac brand, you can rely on these batteries to provide the necessary power for clear and consistent sound quality. Ideal for daily use, these batteries are a convenient and essential aid for those in need of hearing assistance.