Final answer:
When not in use, a hearing aid should have its battery removed to extend both the device and battery's life, prevent corrosion, and avoid feedback noise or power wastage.
Step-by-step explanation:
When a hearing aid is not being used by a client, it should have the battery removed. This practice extends the life of both the hearing aid and the battery, ensures that the device does not accidentally turn on and waste power, and decreases the likelihood of battery corrosion damaging the hearing aid. Furthermore, storing a hearing aid without its battery can prevent unwanted feedback noises which can be disturbing and may also lead to unnecessary power drainage. It is not advisable to store the hearing aid in alcohol as this can damage the device's electronic components, nor is it necessary to leave it turned on or to give it to the client's family unless for a specific reason.