Hearing aid battery life depends on several factors, including the hearing aid model, how many hours per day the hearing aid is used, the battery manufacturer and type. Battery life can range from around 80 hours for size #10 batteries to 300 hours for size #675 batteries. To maximize battery life, turn the hearing aid off when not in use and store unused batteries indoors at room temperature in their original packaging.

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HEARING AID BATTERY LIFE
Even though it might seem to be a simple question to ask just how long hearing
aid batteries will last, it isn’t. How long hearing aid batteries will last depends on
quite a few variables. Battery life depends on the model of your hearing aid, and
may vary widely across different models developed by the same manufacturer.
The length of time your hearing aid batteries will last also depends on the way in
which you use the hearing aid – hearing aids demand constant power as long as
they are on, so the more hours of the day you use yours, the faster you’ll go
through batteries.
There are even varying battery lives in the same size of hearing aid battery
depending on the manufacturer, and depending on if you are buying that
manufacturer’s “premium” line or their
“normal” line of batteries. Hearing aid
battery life also depends on battery
type; for example some types are only
discharging power when they are
inside a hearing aid that is switched
on, while other types (such as, zinc-air
batteries) start burning power as soon
as you take away the adhesive strip
on the bottom of the battery and
they’re in contact with oxygen,
regardless of whether the hearing aid
is on or not.
If you are looking for a new hearing aid, you may want to do some research in
advance to see which have the best ratings for battery life, because that may
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 trying to find the batteries with the best performance for it; you can
uncover a great deal from consumer ratings and comparative reviews.
Fortunately, when shopping for hearing aid batteries, their manufacturers have
made things a lot simpler for you by standardizing their sizes and color-coding
each size; the identical color codes are used by all manufacturers. The following
list of battery life is an approximation, of course, but it may give you a general

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idea of how long hearing aid batteries of each size should last:
• #675 – Blue tag – 300 hours
• #312 – Brown tag – 175 hours
• #13 – Orange tag – 240 hours
• #10 – Yellow tag – 80 hours
To ensure the longest life for your hearing aid batteries when they’re in the
hearing aid, turn the device off when you are not wearing it. To ensure the
longest shelf life for hearing aid batteries you’ve purchased but haven’t used yet,
store them indoors, at room temperature, and in their original, unopened
packaging.