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Sold in Boxes of 40 batteries. Each box contains 10 packages, with 4 batteries per package.
At clearly hearing we carry premium zinc air hearing aid batteries. We are always comparing battery companies to make sure we are providing the longest lasting hearing aid batteries at the best possible price. When you purchase batteries from clearly hearing you will receive rayovac, power one, duracell or energizer branded batteries. At times our batteries will ship with our own private label.
Each Size 312 Battery will typically last 7-10 days depending on the hearing aid it powers and the usage.