Why do hearing aid batteries last only about a week, but other small batteries can last more than a year?

Question by bbaarcke: Why do hearing aid batteries last only about a week, but other small batteries can last more than a year?
My wristwatch battery usually lasts over a year and the 10 year batteries in my home smoke alarms have made it over three years, so far. Is the very short life of hearing aid batteries because of planned obsolescence for greater sales?

Best answer:

Answer by Ben O
hearing aid batteries can last up to 5 years even more. That is why their so expensive.

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One Response to “Why do hearing aid batteries last only about a week, but other small batteries can last more than a year?”

  1. kd5fjf says:

    Because it is an audio amplifier that is on all the time.


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