About hearing aid batteries. All batteries are toxic and dangerous if swallowed. Keep all batteries (and hearing aids) away from children and pets. If anyone swallows a battery it is a medical emergency and the individual needs to see a physician immediately and call the Battery Hotline at 202-625-3333. One question often asked is "How long do batteries last?" Typically they last 7 to 14 days based on a 16 hour day. Batteries are inexpensive, costing less than a dollar each. Generally, the smaller the battery size, the shorter the battery life. The sizes of hearing aid batteries are listed below along with their standard number and color codes. Size 10 (or 230): YELLOW Size 13: ORANGE Size 312: BROWN Size 675: BLUE Today's hearing aid batteries are zinc-air. Because the batteries are air-activated, a factory-sealed sticker keeps them inactive until you remove the sticker. Once the sticker is removed from the back of the battery, the battery is "turned-on". Many hearing aids do not have off switches. To conserve battery life, open the battery door when not in use. Zinc-air batteries have a shelf life of up to three years when stored in a cool, dry place. Storing batteries in the refrigerator does not extend the shelf life. In fact, quite the opposite may be true. The cold air may cause moisture to form under the sticker causing the battery to drain. If you have more questions, feel free to call our office. Lesner Hearing Center Seminary Professional Village 5232 Dawes Avenue Alexandria, Virginia 22311 (703) 820-3800
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