I had to pop the first one off minutes after installing it because I put the battery in wrongSeems to. You may want to get the dealer to email you the battery replacement instructions for your specific accessory just to be 100% sure. The one I found is for a CX5 one but I suspect it's the same but you never know!
Pushing in the middle and pulling on the edge worked. I was worried I might pull the new tape off but no issues.