There are quite a few things you can do to get the most out of your hearing aid battery such as: Store batteries at normal room temperature. Wash your hands before changing batteries to keep oil and dirt from causing damage to the battery or clogging up the air pores. Leave the battery compartment in your hearing aid open at night to let moisture escape. Use a hearing aid storage container or dehumidifier. Check the expiration date on the package before you purchase new batteries. Try and purchase batteries with an expiry date that is a year in the future or further. Do not remove the protective seal on the battery until you’re ready to use it. Once the seal is removed, the battery begins to lose charge. Use rechargeable batteries. Our clinic staff would be happy to help you find a rechargeable option for your device.