Why does my magic mouse lose the connection when I lift and place down again on surface?
Solution 1:
It must be about the batteries but for what I've experienced so far it's not about energy, but about their length, at a very slight scale.
Since two days I had this problem again - it occured like almost 10 times this morning. So I removed the battery cover, and put a flat piece of folded paper towel upon the batteries, in a way that when I put the cover back again, it is slightly bent, just what it needs to ensure a firm pressure on the batteries, so they won't move at all.
My conclusion is : problem solved.
tl;dr : you can fix Apple's 80$ mouse with 2 sheets of toilet paper
Solution 2:
I had exactly the same problem with the magic mouse connection being lost when I lifted the mouse.
I have now switched the batteries from my wife's magic mouse into my mouse and it works perfectly.
When I switch my batteries back into my mouse the problem comes back. The batteries are the exact same type (Energizer Advanced) as the ones in my wife's mouse.
At this point I thought that the issue lay with my batteries, until I switched my batteries into my wife's mouse and the mouse worked perfectly. So my batteries cause the problem in my mouse but not my wife's mouse.
So all I can suggest is that you get another pair of batteries and hope they work.
Solution 3:
I had this same problem and I tried adding the paper shim without success. What is working for me right now is leaving the cover off completely. So far so good but it is only day one.