Xpantastic!

Hi Jeremy,

The RAM data ( patch/multi data ) in the M12/Xpander is battery backed. As 
opposed to FLASH ROM which is common in more modern designs. The only problem 
with battery backed RAM is you have to replace the battery every so often. It 
offers a theoretically endless number of re-writes ( Patch Saves) .

The Lithium battery used in the M12/ Xpander is one of the more durable and long
lasting batteries I have ever seen. 
I keep meaning to change mine but have not gotten around to it yet. It's been 
holding the patches fine since the late 1980's.

I have seen the same model battery leak once from a piece of test gear (not 
musical instrument) manufactured in 1981. It did not spill onto the board but 
developed some kind of white crystals around it's case. It still worked fine but
I replaced it anyway.

You can get exact replacements from Digi-Key which pretty much ships worldwide. 
And I happen to know they have a several European 
and far east distribution centers, if you need one right away.

http://www.digikey.com/product-search/en/battery-products/batteries-non-rechargeable-primary/394467?k=P226



Best

Karl



Hi,

Does anyone know how the Xpander stores its settings?

If you turn it on and off, it keeps the settings, for years and years. 
Is there a long-life battery?

Thanks for any explanations!

Cheers,

Jeremy.