675 battery vs 13

i’ve pretty much decided my next pair of aids will be phonak.
been wearing aids for almost 40 years and until this last pair have always had the larger BTE using the 675 battery. my current pair are unitron BTEs using the 13 batteries. have had them about 4 years. I’m used to the 13 battery now but I remember when I first got them not liking the shorter battery life, like 10 days instead 3 weeks.

so now all 3 of the audis I’ve shopped with are pushing the 13 again. my question is why? I don’t mind the larger 675, in fact being larger the batteries are easier to handle. And I would definitely prefer changing batts less frequently. Plus there’s the difference in power/headroom between the SP aid and UP aid. Even though the SP should have enough power for me now it seems wise to have the extra headroom. my hearing has changed very little over the last 10 years but that’s not guarenteed for the next 10. Now that I’ve retired and living on fixed a income I want these aids to last more than 3 or 4 years.

but the audis don’t seem to think that should be a deciding factor(s) ???
what gives… what are they not telling me?
thanks,

I would always go with the UP even if my loss fitted in the SP.

The UP is only 4db more power but it does a lot better in the low frequencies.

You also get longer battery life with having the bigger battery.

The different between the SP and UP size is tiny.

I would always go with the maximum power aid that you can with your loss to allow for further decrease in hearing.

I wouldn’t want to be paying out in less the 2 years for new aids coz my loss has decreased. You never know when you will loose more hearing and if you will but I always would be ready.

And looking at this the 675 offers a big difference in mah

Battery Size: Milliamp Hours:
675 600 mah
13 260 mah
312 130 mha
10A 70 mah
5A 35 mah

You are paying for it so get what you want :slight_smile: The Audi is hoping properly to sell you new aids if you loss does go downhill.