Just sharing my own battery life study. I received my KS9s 385 days ago and I have always used Costco batteries. I kept every battery I have used and I just counted them today. I have used 174 total batteries in 385 days which works out to 4.425 days average per battery. Not too great.
I wear my hearing aids all day, every day for approximately 14-16 hours and I stream my phone, iPad and tv.
Not really. Think of it this way: 174 batteries were used or 87 pairs of batteries. Since they’re used in pairs, divide the 385 days by 87 pairs and ~4.4 days per pair of batteries. Each battery runs a hearing aid for about 4 1/2 days.
Very good contribution an is definitely useful to me. I as well have about 14 hrs average daily use haids. I as well use only Costco battery but size 13 wish I believe is little bigger that 312.
Because I cannot get to that accurate conclusion I was thinking 5 to 6 days is my average. You here allowed me me to confirm this. And I’m okay with anything above 5 days because I do streaming, all my phone call, phone system notifications, changing programs, use the phone landline in combination phone proximity, and I also want sleep with my haids.
I also have Costco KS9’s, wear them all day, roughly 16 hours and do a fair bit of Bluetooth. I get roughly the same life out of the Ray o Vac 312’s. I buy 60 at a time online and in the scale of current prices I’ve stopped fretting about the cost. It’s not much compared to the initial outlay. I even wonder if they will stop making HA’s with disposable batteries. Marketing seems to favour rechargeable but I’m not even sure I would prefer it. You pay a premium for rechargeable which might be more than I’ve spent on batteries in a couple of years.
My best 312 life dropped from around 6 days to 4-5 days when new aids added bluetooth and I added frequent audiobook listening. In the past 1- 2 years I have had to increase the overall output volume to 80% for better speech understanding, and it is more like 3-4 days now. Still love ‘em though. I work in health care so everyone has at least an N95 mask on…and some have the full spacesuit. I wouldn’t be able to work without them. I do always carry a pack of spare batteries…or preemptively change out the batteries if I will be in a setting where I can’t readily change them.
With the Costco batteries I consistently received a 4 day service life. I switched to RayoVac and saw a battery life increase of 3 days. In that my KS9 now run for 7 days it make remembering when to change out the batteries a scheduled event. Nice