On Fri, 2009-09-11 at 07:06 -0700, Michael Hawkins wrote:
>
>
> If you have five C batteries in the Poly-800, then the patches should
> stay.
>
> But, there is also a location on the main printed circuit board for
> installation of a lithium battery.
>
> On some early main boards, there are no pads for the battery to
> install onto. But most boards do have the pads.
>
> They're right smack in the middle of the main board. Check to see if
> there's a lithium battery soldered in there.
Since all you need to do is ensure that /CE is high and there is power
to the chip, it should be easy enough to bodge in the required diode,
resistor and battery to any model.
Gordon MM0YEQ