Talk: Hearing aid energy sources then, now and in the near future

The challenges in powering still more power hungry hearing aids with miniature energy sources, mainly batteries, are described by some history and examples. An overview of future technology for hearing aid energy sources is provided and examples are explained. Primary battery (non-rechargeable) technology like zinc air (ZnAir) and secondary technologies like nickel metal-hydride (NiMH), silver zinc (AgZn), are compared with respect to capacity, energy density, cycle life and power (“rate”) capability.

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Kim Rasmussen

Kim Rasmussen spent most of his career working with application of batteries. With Chartec Labs. from 1991-2000, he explored, developed and patented fast charging methods for NiCd, NiMH and Li-ion batteries for use in handheld radios, power tools and mobile phones. In Nokia, 2000-2004, he worked in the technology scouting dept. and investigated new energy sources, battery behavior and performance in mobile phones applications. From late 2004 till now in 2017, he works in GN Hearing with energy management topics, focused on low power challenges with primary zinc air cells and rechargeable Li-ion batteries.

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