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Rechargeable hearing aid cells?

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Salmon Egg

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Jun 14, 2012, 12:08:58 AM6/14/12
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I am relatively new to hearing aids. It seems that the default primary
cell is a zinc-air cell. Output is at1.4 or 1.45 volts. The size
designatgion is 312.

My hearing aids came with rechargeable cells. I am not sure what the
specs for these secondary cells are difficult to find. My guess is that
they are NiMH cell with a nominal output of 1.2 volts. I am not all that
familiar with such cells. Ahain, I am guessing that these secondary cell
when fully charged measure 1.3 to 1.35 volts before settling to a lower
voltage. Does anyone have enough knowledge or experience to let me know
just what is used for secondary cells.

The charger charges these cell inductively. That is, there is no
electrical connection from the charger to the cell. The coupling is
magnetic to the hearing aid assembly itself. Any rectification is in the
hearing aid itself.

--

Sam

Conservatives are against Darwinism but for natural selection.
Liberals are for Darwinism but totally against any selection.

Tom Biasi

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Jun 30, 2012, 4:12:25 PM6/30/12
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On 6/14/2012 12:08 AM, Salmon Egg wrote:
> I am relatively new to hearing aids. It seems that the default primary
> cell is a zinc-air cell. Output is at1.4 or 1.45 volts. The size
> designatgion is 312.
>
> My hearing aids came with rechargeable cells. I am not sure what the
> specs for these secondary cells are difficult to find. My guess is that
> they are NiMH cell with a nominal output of 1.2 volts. I am not all that
> familiar with such cells. Ahain, I am guessing that these secondary cell
> when fully charged measure 1.3 to 1.35 volts before settling to a lower
> voltage. Does anyone have enough knowledge or experience to let me know
> just what is used for secondary cells.
>
> The charger charges these cell inductively. That is, there is no
> electrical connection from the charger to the cell. The coupling is
> magnetic to the hearing aid assembly itself. Any rectification is in the
> hearing aid itself.
>
What is the make and model of the hearing aids? The battery requirements
should be clearly specified in the booklet.
If not, the manufacturer can provide this. If you bought internet
generic hearing aids throw them away.

Tom

Salmon Egg

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Jul 2, 2012, 5:29:23 AM7/2/12
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In article <4fef5d8d$0$6077$607e...@cv.net>,
Tom Biasi <tomb...@optonline.net> wrote:

> What is the make and model of the hearing aids? The battery requirements
> should be clearly specified in the booklet.
> If not, the manufacturer can provide this. If you bought internet
> generic hearing aids throw them away.

It seems that when health products are involved, the ability to get good
information in the absence of regulation is difficult. That is why I
asked for information from a knowledgeable source. The information you
get is to use a rechargeable hearing aid battery size 312. For anything
else, see your hearing aid provider.

Tom Biasi

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Jul 2, 2012, 7:56:54 AM7/2/12
to
On 7/2/2012 5:29 AM, Salmon Egg wrote:
> In article <4fef5d8d$0$6077$607e...@cv.net>,
> Tom Biasi <tomb...@optonline.net> wrote:
>
>> What is the make and model of the hearing aids? The battery requirements
>> should be clearly specified in the booklet.
>> If not, the manufacturer can provide this. If you bought internet
>> generic hearing aids throw them away.
> It seems that when health products are involved, the ability to get good
> information in the absence of regulation is difficult. That is why I
> asked for information from a knowledgeable source. The information you
> get is to use a rechargeable hearing aid battery size 312. For anything
> else, see your hearing aid provider.
>
Once again, who is the manufacturer and what make do you have and maybe
I can help.

Tom

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