Re
Rechargeable vs batteries
My batteries last 5 to 7 days
The best rechargeable lasts 10 to 12 hours.
Even with a pocket recharger that is unnacceptable.
I have perfectly good phonak H.A. that are over 7 years old, take batteries and work fine.
Rechargeable H.A. Batteries WILL die after 3 years or so and the H.A. cannot be serviced or batteries replaced.
You get to throw out an otherwise perfectly good $5000 pair of H.A.
The magic technology advances touted by the whhite coat H.A. Vendors (they are not docotrs, folks)
are not worth my spending another $5k . I am checking costco to see what they can offer for
$1k but I have to be quick and beat the “tarrif taxes”
Ymmv
I think you might want to take another look at the current generation of rechargeable hearing aids.
My "cheap" ($1,400) Jabra hearing aids have always lasted around 30 hours when fully charged, and they can be fully recharged in 3 hours or less.
So, your statement that rechargeable hearing aids only last 10-12 hours between recharges isn't correct for the current state-of-the-art hearing aids.
You also stated that the rechargeable batteries WILL die after only 3 years. I'm not sure where you got that info either, but I think it is very outdated.
In my personal experience, I have been using the same set of Jabra hearing aids since November of 2022 - over 3-1/2 years now - and their rechargeable batteries are still holding enough charge to keep them working for around 30 hours between recharges.
So far, they are still holding a charge just as long as they did when they were brand-new, out of the box.
20 years ago, rechargeable hearing aids (and laptops, and all other devices with a rechargeable battery) used NiMh (Nickel Metal Hydride) batteries. They were only good for 10-12 hours per recharge, and they were worn out after only 3 or 4 years.
But the newer rechargeable hearing aids (and other devices) that use LiOn (Lithium Ion) rechargeable batteries are MUCH better.
I would encourage you to take another look at the current generation of rechargeable hearing aids. They are far better than what was available in the past.
I don't get 5-7 days per charge - like you do with your hearing aids with replaceable batteries - but I don't have the ongoing cost of buying replaceable batteries either.
I just have to remember to put mine in the charger every night before going to bed. Not a big deal for me since I don't need or want to wear them while I'm sleeping.
Seems like a good trade-off to me, but YMMV.