If you are like me, you had a wireless Apple keyboard where there was AA batteries leakage and the threaded lid won't open. Something definitely to dread, especially when the replacement costs isn't cheap.
I hadn't used my keyboard for a while until I found this. I saw white grains around my desk and realised that there had been a battery leakage (some white corrosion is outside the threaded lid area).
The corrosion joined the parts together strongly in a chemical fusion.
I immediately tried to open it but no methods seemed to work, I used a coin, pliers, a screw driver with no avail.
I followed someone's tip online and removed the bluetooth module cover removes by squeezing the sides of the plastic tube together, which allows a jeweller's screwdriver to get under the rear edge and gently lever it up. I did this but just couldn't make it through to the battery.
I am writing this article to show you some photos of what I experienced, and some suggested steps to try. This includes:
Here's an Apple forum discussion on this topic if you're looking for others in the same boat and my photos below.
Here's the wireless Apple keyboard battery opening spot, you'll see the corrosion around it.