Do hearing aid batteries expire?

They do. We guarantuee performance for up to three years after production. After this we cannot guarantee the battery will perform as well as it’s supposed to. Panasonic hearing aid batteries, or zinc air batteries, react with air. As soon as you pull off the seal, the battery will be able to release energy. Storing the battery after taking off the seal will also decrease the battery life, causing them to expire faster.

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