Varta custom makes Li-ion cell for hearing aid

Battery specialist Varta has tailor-made a lithium-ion cell for hearing aid manufacturer Eargo, for its its smallest and most advanced hearing aid to date, the Eargo 5.

The cell (shiny cylinder in photo right) has been shaped to fit the contours of the hearing aid and, charged for four hours, the button cell will deliver 16 hours of continuous use.

“Varta has been a partner for Eargo for over six years,” said Eargo engineering head Rory Pynenburg. “With Eargo 5 functionality, it became obvious that we would need more energy density. The switch to lithium-ion not only allows this, but also makes for a much more robust solution with faster, easier charging and a goal of supporting full run-time over several years.”