What should occur when a hearing aid battery is low?

When a hearing aid battery is low, the device typically emits a soft beeping noise to alert the user that the battery needs to be replaced soon. This auditory signal serves as a warning, allowing the user to take action before the hearing aid ceases to function entirely. The beeping noise is designed to be noticeable without being excessively disruptive, ensuring that the user can still hear and manage their hearing aid effectively.

Other scenarios, such as a complete silence or a continuous high-pitched sound, would be less practical and could lead to confusion for the user. A soft beeping noise strikes a balance by providing a clear indication of the battery issue while still allowing continued use of the hearing aid until the battery can be changed. Intermittent functioning could occur as a battery runs very low, but it's not the primary signal intended to alert the wearer about battery status. Therefore, the soft beeping noise is the primary method of notification for low battery in hearing aids.