| Author |
Hearing aid batteries
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| Shutterbug 2004-08-25, 10:10 pm |
| I have often been asked why HA batteries cannot last as long as watch
batteries.
I use 2 kinds. The size 10 last about a week and size 13 aabout 2 weeks.
Watch batteries last at least a couple of years and they are about the same
size.
Shutterbug
"f8 and be there"
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| Susan 2004-08-25, 10:10 pm |
| Off the top of my head, two major differences
1. Watch batteries are lithium while HA batteries are zinc-air
2. Your watch battery only powers a cog to turn, your hearing aid
battery has a much higher level of drain
In article <NzaXc.23080$DG.1132984@news20.bellglobal.com>,
f8shutterbug@sympatico.ca says...
> I have often been asked why HA batteries cannot last as long as watch
> batteries.
> I use 2 kinds. The size 10 last about a week and size 13 aabout 2 weeks.
> Watch batteries last at least a couple of years and they are about the same
> size.
>
> Shutterbug
> "f8 and be there"
>
>
>
>
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| Malcolm Stewart 2004-08-26, 7:12 pm |
| "Susan" <hearinghelper@spamverizon.net> wrote in message
news:MPG.1b9704ac43767c5d9896c5@news.verizon.net...
> Off the top of my head, two major differences
> 1. Watch batteries are lithium while HA batteries are zinc-air
> 2. Your watch battery only powers a cog to turn, your hearing aid
> battery has a much higher level of drain
I've noticed that my size 13 ZA batteries tend to fail soon after I've done
a few hours of noisy motorway driving. As I don't do that much motorway
driving these days, the correlation is fairly obvious (at least to me).
--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk\oddimage.htm
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| ken kerrison 2004-08-27, 2:09 am |
| Wow - new town! (or do they call them 'old towns' now?).
Look for something temporarily blocking the air hole. I had odd
experiences years ago when batteries would fail and them come good for
no apparent reason.
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| Peter Weis 2004-08-29, 7:10 pm |
| "Shutterbug" <f8shutterbug@sympatico.ca> wrote in
news:NzaXc.23080$DG.1132984@news20.bellglobal.com:
> I have often been asked why HA batteries cannot last as long as watch
> batteries.
> I use 2 kinds. The size 10 last about a week and size 13 aabout 2
> weeks. Watch batteries last at least a couple of years and they are
> about the same size.
Hearing aids use much more energy than watches. Transforming electrical
signals into sound is very inefficient.
best regards
Peter
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| Malcolm Stewart 2004-09-02, 11:11 am |
| "Susan" <hearinghelper@spamverizon.net> wrote in message
news:MPG.1b9704ac43767c5d9896c5@news.verizon.net...
> Off the top of my head, two major differences
> 1. Watch batteries are lithium while HA batteries are zinc-air
> 2. Your watch battery only powers a cog to turn, your hearing aid
> battery has a much higher level of drain
I've noticed that my size 13 ZA batteries tend to fail soon after I've done
a few hours of noisy motorway driving. As I don't do that much motorway
driving these days, the correlation is fairly obvious (at least to me).
--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk\oddimage.htm
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