One of the best ways to save your battery life is to turn your hearing aids off when they’re not in use. You should also open the door to the battery compartment, as this can help dry out moisture that commonly accumulates there. At night when you sleep, you should remove the battery from the compartment. Moisture will cause your battery life to decline, as well as cause deterioration of the inside of the hearing aid over time. As such, when you store batteries, make sure that they’re not exposed to moisture or hot and cold temperatures.