hearing aid fuel cell

Hearing Aid Fuel Cells?

In a previous article, in discussing hearing aid power supplies, it was mentioned that depending on its design, a power supply (battery) may obtain its energy from different types of energy sources, including electrical energy transmission systems, energy storage devices such as batteries, and fuel cells.   Hearing aids have used storage batteries for many…

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hearing aid battery holes

Why Are There Holes in My Hearing Aid Battery?

The zinc-air hearing aid battery (cell) of today has small holes in it.  Why is this? Background Hearing aid batteries currently are identified as zinc-air batteries (in hearing aids, actually a cell rather than a series of cells comprising a battery). The use of zinc-air cells for hearing aids was mandated in the U.S. by…

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