Replacing an A2000 battery

[Bryan Pope]

I am currently in the process of replacing my Amiga 2000's battery...  On the 
one I was finally able to remove there *seems* to be some damage to the 
circuit board that was underneath and nearing the 68000.  Instead of the 
circuits being a nice green colour, it is now black.  Is there any way to 
tell if this is only a colour change?  Also, it looks like some of the 
copper has been eaten away around where the negative part of the battery 
was soldered to the motherboard.

I have cleaned all of the white crap off with vinegar and a toothbrush.  I 
then used "Precision Electronics Cleaner" from RS which is _supposed_ to 
leave no residue.

Also, how are the solder tabs affixed to the battery?  The replacement 
batteries I got don't have any.

Cheers,

Bryan Pope