[sdiy] battery backup

[Ken Stone]

>So forget the ni-cads. I'd prefer the dry-cell for cheap, or the lithium
>for better
>performance.  Don't use heavy-duty alkalines... if you can find them,
>regular carbon
>cells are better... alkalines self-discharge faster (so they DON'T last
>as long as the
>cheap-o's)

I used some ordinary AAA cells as memory backup on a couple of "non volotile
RAM" boards I made. and when last checked, they had been working fine for
over 15 years with the original set of batteries.

Ken
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>