Store your batteries in a cool and dry place. But don't store your batteries in a refrigerator or a freezer. Warming the batteries to room temperature may cause condensation and corrosion and does not prolong their life span. Keep batteries away from small children or pets and store them apart from medicines. Do not carry loose batteries in your pocket or purse.
Metal objects can prematurely discharge the batteries.
Before inserting the battery into your hearing aid, the battery should be dry and at room temperature. If you see this dust or crust, do not attempt to clean off the battery and use it anyway, as damage to your hearing aid can result. When your hearing aid is not in use, remove the battery or at least open the battery door. This will help reduce corrosion. Keep batteries away from small children or pets and store them apart from medicines.