Reasons for changing battery life?

I’ve been getting 7.5 days out of a battery (312 size - I have a single RIC Widex aid). The last 3-4 batteries, all from the same batch of bulk batteries, have been coming in at 7 days. Losing that extra 1/2 day isn’t a big inconvenience, it’s actually pretty nice that the battery runs dry the same time and the same day each week. I’m trying to figure out what might be different that would cost an extra 6-8 hrs of battery life. I wouldn’t think that environmental factors (temp/humidity) would make a big difference in a RIC aid. I don’t think my noise environment has changed all that much that would make the battery work harder. Maybe it’s just a difference in battery lots?

It can be just a small variation in the chemical mix with in the batch. I can be environmental, temperature, moisture, noise, you haven’t said anything about streaming. And it could be that something is changing in the aids such as an aging component. I can even be a stopped up wax guard or mic filter.

My Oticon HAs had something like an 8-day life in the summer and 7-days in the winter. So, if you’ve only just begun tracking battery life, it could be that the weather has turned a bit cooler where you live (as is the case here in MA, where it’s now snowing like a champ).

I haven’t had my Marvels long enough to get a bearing on battery life. I know that, if I eschew streaming, I’ll get more time than if I do stream.

I’ve avoided streaming. When I first got the aid I streamed a lot, and did a lot of other playing around with it and I still got 1/2 day extra battery life.

I stream all of my calls, and I stream the TV to my hearing aids. I notice about a day difference in how long the batteries last. But it is worth it to me. Streaming my calls is the only way I can hear on a phone, and streaming the TV is the best way for me to hear the voices.

Do you allow the battery to “breath” for a couple of minutes before placing it in the aid? It is known to give a little longer life by allowing air to get to the chemical inside the battery better, rather than taking the battery straight out of the pack & straight into the aid.


Here is a link to a Ray-O-Vac article on battery life. I see they recommend not putting batteries in a dryer overnight with the aids. I recall a hearing aid dryer company did a study which found the opposite. They claim life was extended by leaving the battery in the aids and putting them in the dryer.

Factors Affecting Hearing Aid Battery Life

Regardless, I can’t be bothered to take the batteries out of the aids, and just open the drawer a bit to turn them off. A few minutes either way on battery life is inconsequential as they are so cheap to buy at Costco.

Concerning this issue, I am a very happy camper. I have Phonak BTE UP aids with size 13 batteries. I was getting very close to 7 days with Ray-O-Vac and Duramax batteries. Now my audiologist is selling Power One (wireless approved) with their own logo on the package. These new batteries are giving me an extra one or two days in battery life on every change. It seems as if Power One has changed their formulation to get a bit more life out of their batteries.

Yes. I do properly allow the battery to activate. As far as I can tell, I haven’t changed anything.

At night I open the battery drawer to turn off the aid. This morning (Monday) I replaced it. I expect it will last until Sunday night (7 days), just like the last 4 or 5. Prior to that I would have expected it to last until Monday afternoon (7.5 days).

Similar to lgpiper’s post my “13”-batteries last at most 17 days in the summer and only 10-12 days in the winter. Now it’s starting the second winter here and the very different durations have been confirmed. I buy my packages in the winter so the batteries are not even fresh in the summer.

I’ve only had my aid since April, so this is my first winter. It will be interesting to see if battery life improves when temperatures and humidity start to rise again in the spring.

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Thanks for this. Like KSMatthew this is my first winter with HAs and I wouldn’t have thought to consider seasonal change if/when my battery life changes dramatically.

When I am in a hurry and I do not let the batteries breath I lose about a half a day out of my battery life. I run my batteries until one of them fails and I change both at the same time. I also rotate them in the hearing aids every day. There always seems to be one hearing aid that uses the batteries more than the other. And with my OPN1 aids it can vary due to which aid makes connection to my iPhone first.

My solution is to open and air up the battery when I get the first failing battery warning. Then I replace it when the second warning comes in (about a minute before it dies). That gives the battery about 10 minutes to air up. I have noticed that the aids shut down communication with my iPhone at the first warning tone. So, if one wants to use the phone to control the aids, you have to change right at the first warning. This is on a KS8.

I have worn Phonak Naid Q50 Ric for a few years and only got 5-6 days of battery life. #13

I’m now wearing Phonak Audeo B90 #13 and get 12-14 days of battery life.

I think one reason is new technology in newer aids, but I don’t know for sure.

One thing I do know with both aids is the more I change programs especially at parties and noises places the battery life doesn’t last as long. Maybe the batteries work harder with constant program changes. It seems to be.

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I only have my default program and the tv connect.
Now my default program auto senses the environment and also my reactions to that environment to automatically make the needed adjustments. If I am at home my batteries last longer as long as I am not streaming the TV. If I am on the road either driving or riding my scooter the batteries don’t last as long. As well if I am in a really noisy environment.
The aids react to environment changes and more it has to react the more battery usage it burns through.
I have noticed that my aids will eat batteries when I am out in the forest hiking it seems to automatically increase volume to try to pick up more of the sounds of the forest which I really love to hear. I love hearing the birds, an other animals, and even the wind blowing through the tree tops, and the brooks, and creeks and rivers.

I’d never thought of rotating batteries for that reason. When I was using the MFIs I would sometimes do that as a way of troubleshooting if the aids weren’t coming on.


I can get eight to nine days of battery on my Phonak Brio RIC’s using #13 battery. Since I buy batteries so cheap at Costco I find it much more convenient to just change them out on the same day every week.

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Just got the first “battery low” message. That’s approx 6 hrs earlier than the last 3-4 batteries. Yesterday I did spend 6+ hrs working outside. Air temps were on the cool side, even though the yard work was making me sweat. I don’t know what temps and humidities my RIC was feeling. This week should be much colder but I won’t be working outside in it. I’m going to try to remember to note when my next battery wears out. I should have been paying more attention to these trends, maybe I could find a brand difference, too.