Casio CZ/ VZ/ FZ - Pro Series

> As far as I know the Poly 800 doesn't come with a battery.
> It's fairly common to add as a modification but I think only the
> EX-800 and Poly 800 II actually come with memory backup batteries.
> I don't think it would be hard to add a battery to a CZ but I don't
> know of anyone who has done it.

It was a Poly-800 Mk II, so it had a dedicated 3V battery installed on 
the board -- the 3V battery had just run out, so I soldered on a new 
one.

If we could hack the CZ-101 / CZ-1000 / etc. to have this sort of 
dedicated memory, it would finally end our dependency on six expensive 
D cells (which I've found rapidly run out, even when I ONLY use the AC 
adapter!).

And in addition, that 3V cell in the Korg Poly-800 lasts for a good 7 
years or so. Let's brainstorm.

Any schematics anywhere?