Rechargeable hearing aids offer hearing aid users a new level of convenience and portability. Before rechargeable hearing aids, most hearing aids used zinc-air batteries that had to be replaced every 3 to 14 days, depending on device. Users with poor dexterity complained about having to change these small batteries so often. Also, the zinc air technology did not make it easy for the wearer to know when the aids would need new batteries. This left some users without functioning hearing aids when they needed them. For almost the last decade, rechargeable hearing technology has been developing rapidly. While a few different variations were developed, lithium-ion has recently become the most popular for a few reasons:

  • Lithium-ion is more durable in the long-term (older versions had to be replaced after 12 months)
  • These new batteries can often be "quick-charged", meaning the user can receive a decent charge (more than 50%) in under 45 minutes
  • On a full charge, these products can last the full day

Because of these reasons, lithium ion has become the go-to for hearing aid rechargeability.

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