Vintage Simmons Drums (UK) Users Group

Ok, so I've plugged in that SDS7 I had since 1986, and it powers on etc but no sound comes 
out.  I pulled all the modules and the card with the battery and it looks like this:

http://www2.snapfish.com/slideshow/AlbumID=210159546/PictureID=4404152712/a=720
87350_72087350/t_=72087350

http://www2.snapfish.com/slideshow/AlbumID=210159546/PictureID=4404152713/t_=72
087350/a=72087350_72087350

Looks like some corrosion on the battery.  So- Simmons made the battery permanent?
  What is it?

Thanks!


-Rob