Replacing your hearing aid batteries is a common task if you wear hearing aids. Your hearing aid battery will usually last for 10-14 days when used for 14 hours a day; this is for the most common size 13, For size 10 this will typically last less time (between 3-10 days) and for larger sizes you can expect to get an additional few days out of each set of batteries – usually up to 20 days.

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