Rayovac Extra Mercury Free Batteries, Size 312, Box of 60

Made in the USA, Rayovac Extra batteries provide consistent air flow throughout battery life resulting in a better performing hearing aid battery every time. Let hearing aid batteries sit untabbed for one minute before putting them into the hearing aid. Giving the battery that extra minute allows air to enter and activate the battery. Shelf life of 4 years.

Batteries come on a card with 6 cells. There are 10 cards per carton. Sold per carton or 60 cells.