Chosen Solution

aluminum keyboard model A1314 I have tried to turn the battery compartment disc with a screw driver and a coin. It does not budge. Is there a safe way to get it off so I can get the batteries out of the keyboard?

You could try a penetrating lubricant like WD-40. I don’t think it would damage anything in the battery compartment as long as you aren’t drowning the thing. Then just make sure to clean it up really well when you’re done.