While the battery life for hearing aids might seem a simple question to answer, it actually hinges on a variety of factors. One factor is the manufacturer of the hearing aid. Battery life varies by manufacturer and also across models from the same company. The life of a hearing aid battery also depends upon the length of time each day that the hearing aid is turned on. As you would expect, the more you use your hearing aid, the more rapidly the batteries will deplete.
Additionally, there are variations in battery life across battery manufacturers, and the same manufacturer may have different lines of batteries, some that are supposed to last longer than others. Some batteries will not start to drain their power resources unless they’re inserted into a hearing aid that is powered on, and some (such as zinc-air batteries) will begin to lose power the instant you remove the adhesive covering on the bottom of the battery, and will continue to lose power even if the hearing aid is not on.
If you are looking for a new hearing aid, you may wish to do some research in advance to see which have the best ratings for battery life, because that could influence your choice of which type or which model of hearing aid to purchase. The same research recommendation holds true if you have an existing hearing aid and are searching for the batteries with the best performance for it; you can learn a great deal from consumer ratings and comparative reports.
Hearing aid manufacturers have worked to make things less confusing by standardizing their sizes and using specific color codes for each battery size which is the same for every manufacturer. The following list of battery life is estimated, of course, but it should give you a general idea of how long batteries of each size should last:
- Blue – Size 675 – 300 hours
- Brown – Size 312 – 175 hours
- Orange – Size 13 – 240 hours
- Yellow – Size 10 – 80 hours
For the longest battery life, remember to turn your hearing aid off when you are not using it. To ensure the longest shelf life for hearing aid batteries you have purchased but have not used yet, store them indoors, at room temperature, and in their original, unopened packaging.