Korg Poly800/EX800 Users

I replaced my dead battery on my battery-modified mk1. The battery I 
used didn't have solder lugs, so I used super glue. It actually held 
up for a few months... But I knew it wasn't a real fix, and the wires 
eventually lost contact.

So, I ordered a new 3v Li coin cell WITH solder lugs from Mouser. The 
problem is, I ordered the wrong size. I got 10mm, and I probably 
should have gotten 20.5mm.

My question is this... If I install this small battery, how long 
would it last? Atleast a year or so? I need to use the synth for some 
gigs nextweek, and I can't wait around for a new order to arrive 
because I'll be out of town. Will this battery keep all the data 
atleast 2 weeks?!?

Thanks!
-Mike Walters
www.mysterycircuits.com