>Sorry, the battery I was referring to is the PRAM battery, about the
>size of five quarters stacked, with a plastic outer shell and a
>three-wire bus to a connector that plugs into
>the board. I don't know if it's rechargeable; that would be
>convenient! they could last the useful lifetime of the computer!
Yes, they are rechargeable NiMH button cell batteries, I forgot to
track down the sanyo type number listed on them.
Unfortunately I have my Duo2300c -not- apart at this time *g* so
somebody else could do this easier.
I also think, you could just solder two 3V NiMHs together (with a
wire to the middle), but for me it was always much less work to find
any working PRAM battery in some of my sparepart duos.
They last very long (as they were recharged, you can try, when you
leave out the main battery and plug in the power adaptor� it was
somewhere stated either in the apple til or in the service manual)
and if it don't recharges (you could also probe it with a voltmeter -
if they do not have ~6V current when they should be charged, they
assume to be dead) then you have to replace it.
Axel.
>
>Luc Verhelst wrote:
>
>> > Date: Thu, 19 Jul 2001 22:49:18 -0700
>> > From: "Robert E. Gruber, Jr." <[EMAIL PROTECTED]>
>> >
>> > I removed this battery, thinking it could have a
>> > problem--date changes, etc.
>> > I checked its voltages, and they were ~3v per cell, for a
>> > total of ~6v (no load). Does
>> > anyone know what voltage a new battery has?
>> > I think this actually is a battery; two ~3v cells, with the
>> > midpole also having a
>> > tap--ergo, a three-wire connector to the motherboard.
>> > Seems one could fashion this from two 3V button batteries, no?
>>
>> As long as it's rechargeable batteries. I don't know if they're
>>NiMH or NiCad. You may have a problem soldering the wires to the
>>batteries. Certainly NiMH's don't like the heat.
>>
> > Luc
> >
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