"The battery cap is corroded on. How can it be removed?"に関する回答Thanks for the great info! I was about to take my keyboard into a shop to get fixed but found this thread. I used the water-nickel approach and was able to open the sealed cap in a few minutes (after trying to pry it open for nearly half hour with a screw driver and keys yesterday). Inside was two corrosive 2A’s. God bless you all. Apple keyboard now back in working condition again.