No quibble at all. My keyboard ca. 2010 years old is two batteries. No question but that the A1255 had three, the A1314 which I have is two. Duh! (for me). I didn't think initially about model numbers and I got enough out of this to make it work

Thanks to this post I managed to remove a stuck battery on an A1314, pushing the battery out with a letter opener.

The ribbon cable is not hard to remove, but a little trick to open and relock it back? I just had cataract surgery which didn't help, but it's pretty obvious when you take a close look.

There was no corrosion; the keyboard was working. Someone installed off-brand batteries, no leaks just stuck. New name brand (copper tops) slide in and out without a problem.