Hear every moment with long-lasting power in Duracell Hearing Aid Batteries. The Duracell Hearing Aid battery tab is extra-long, so it's simple to handle, and its packaging is easy to open. Batteries are color-coded, making it easy to find the size that's right for you. You get peace of mind knowing Duracell is the #1 recommended by the Arthritis Foundation for ease of use. Plus, Duracell Hearing Aid Batteries will last up to four years in storage. Size 312-Brown. Battery Type: Zinc Oxide; Battery Size: 312; For Use With: Home Medical Devices; Voltage: 1.45 V.