Re: PB pram battery charging?

[Paul Nelson]

At 11:41 PM -0700 8/9/02, Dick Johnson wrote:
>Does anyone know of a charger available just for this setup?

Your Duo IS your charger!  Go to link below for 2400/Duo list.
Paul

>Duo/2400 List, The friendliest place on the Net!
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Re: PB pram battery charging?

[PeterH5322]

In a message dated 8/9/02 11:41:59 PM, [EMAIL PROTECTED] writes:

<<
An exhaustive search of the web turns up the info that the 6 volt double-disk 
lithium battery set probably can be re-charged. The coin-sized rig has three 
twisted  wires (white, black, red) that plug into the mother board.

Does anyone have an idea of how to charge this?
>>

The problem is a charger needs to be a constant current source.

But, you've got two cells, and these need to be independently charged.

So, I would build a two-chip charger, one for the +'ve cell and the other for 
the -'ve cell.

Lots of work, but it can be done with a pair of single-chip charger ICs as 
the current is so low.


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PB pram battery charging?

[Dick Johnson]

An exhaustive search of the web turns up the info that the 6 volt
double-disk lithium battery set probably can be re-charged. The coin-sized
rig has three twisted  wires (white, black, red) that plug into the mother
board.

Does anyone have an idea of how to charge this? I have a multi-purpose
charging rig that handles batteries from wafers to 9volt. I could connect
the lithium set with aligator clips to the positive and negative (red and
black, I should imagine).

A new set runs over $50 from a supplier, so I figure I don't have much to
lose by trying this. Once charged, the lithium is supposed to last for
years.

Does anyone know of a charger available just for this setup?

Dick



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