There are 4 main sizes of hearing aid batteries, often referred to by the colour of the packet for ease of reference, yellow, orange, brown and blue. If you need help to find the right size for your hearing aid please contact us.
Using Zinc Air chemistry, the system uses oxygen from the atmosphere as an active ingredient which allows the battery to pack in an enormous amount of energy for their size & weight. These hearing aid batteries all have a small hole in the case that allows air into the battery, which is used as part of the chemical reaction. The battery is not activated until the plastic seal is removed.