Confirmed !
I still have the 1st battery in my Xpander,- since I buyed it new.
No leakage though,- and when I thought there\ufffds a replacement necessary, I\ufffdve found out the old is full up to now.
I\ufffdm sure it depends on usage of the Xpander/Matrix-12, if it\ufffds been switched on all day for a few hrs,- the battery holds your patches for decades.
P.
Am 12.07.2012 09:42, schrieb Karl Schmeer:
\ufffdHi Jeremy,
The RAM data ( patch/multi data\ufffd)\ufffdin 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\ufffd( Patch Saves) .
The Lithium battery used in the M12/ Xpander is one of the more durable and long
lasting batteries\ufffdI 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\ufffdthe 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\ufffdworked 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\ufffd
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