“Which kind of battery do I buy for my hearing aid?” is a tough question to answer generally, because there are many different types of hearing aids, and each takes a battery that matches it and contains enough energy to supply it with power. If you already have a hearing aid, consult that device’s manual or the professionals who fit it for you to determine the proper battery size and type. For anyone purchasing a first hearing aid you will be able to discover a lot with a little bit of research. The reason behind this is that hearing aid batteries vary in price and in battery lifespan, and so a rough knowledge of how many of them you will need over time can affect your choice of which hearing aid to get.
The good news is that hearing aid battery packaging uses a standardized color coding scheme. Batteries of the same type and size will always have the same color code on their packages, no matter who made them.
The most common varieties are:
The color blue corresponds to Size 675 batteries. These batteries are fairly large and will hold a longer charge – as much as three hundred hours. Size 675 hearing aid batteries are prevalent in cochlear implants and larger Behind-the-Ear (BTE) hearing aids.
Hearing aid batteries with the orange color code are Size 13, and fit Behind-the-Ear (BTE) and In-the-Ear (ITE) types of hearing aids; their battery lifespan is normally around 240 hours.
Yellow indicates Size 10 batteries. These are the smallest and most plentiful size of hearing aid battery lasting an average of 80 hours. This size of battery is common in Completely-In-Canal (CIC) and In-The-Canal (ITC) hearing aids.
Size 312 batteries have a brown color code, and are typically used in In-The-Ear (ITE) and In-The-Canal (ITC) hearing aids; they have an average battery life of around 175 hours.
These four battery types address most hearing aids, however there are some exceptions that call for different batteries. If yours need one of these different types, most retailers that provide batteries can obtain them for you.
Before stocking up on batteries, make sure to read the owner’s manual that came with your unit to make sure it doesn’t run on rechargeable batteries; if it does, you need disposable batteries only as back-up. Also be aware that hearing aid batteries gradually lose their charge over time. You will get the best battery life by buying batteries that are new and storing them in the sealed original package in a cool place until you need to use them.