Battery leaked on old computer

[shed driver]

I've got an old, circa 1993 or so Risc PC. Its not been touched for about 15 years and the battery appears to have corroded.



Should I just plug it in and hope for the best, or is there a proper way to clean it?

SD.

[Mr Pointy]

That's the CMOS battery that keeps stuff like the clock going & all the configuration info in the BIOS. Don't just plug it in, remove the battery & clean up the corrosion with a damp cloth. If the terminals on the pcb are badly corroded you may need to clean them up with some fine sandpaper. You'll need a hew battery of course.

[mikef]

Clean off with rubbing alcohol or Jiff lemon on a Cotton bud