Some audiologists include in the costs of hearing aids a litany of perks, like follow-up care, refittings, warranties that cover damage, and free hearing aid batteries—so you may not actually have to pay for them. Free batteries are sometimes offered for the same term as the warranty, and sometimes for a fixed amount of time. Packs of hearing aid batteries typically cost between $10 and $17 for packs of 18 batteries, or several weeks’ worth of power. Depending upon hearing aid style and use, total battery cost may be as little as $30 per year, or as much as $150 per year.
How often you change your hearing aid batteries will depend mostly on two things: the style of hearing aid you use and how often you use it. Many of the smaller units — the invisible units, for instance — require smaller batteries that have less power. Using these units for most hours of the day might yield only three to five days of use per battery. Batteries for larger styles, however, like behind-the-ear units, can last for weeks if used for only a handful of hours each day. Wearers of these units can typically expect their batteries to last for five to seven days if used regularly.