Q: Is my Magic Mouse Dead?

This worked!!! Thank you.

Just cleaning the contacts inside the Magic Mouse brought live back.

I tried several solutions, none of which solved my problem. The mouse simply would not connect. Finally, in desperation I looked on youtube and found this, which worked:

https://www.youtube.com/watch?v=nqgg3ljQN90

I tried several solutions, none of which solved my problem. The mouse simply would not connect. Finally, in desperation I looked on youtube and found this, which worked:

https://www.youtube.com/watch?v=nqgg3ljQN90

It simply entailed shutting the computer off, unplugging everything from the computer. Leave these unplugged for at least 15 seconds. Plug everything back in and boot the computer back up.

Cleaning the contacts did the job. I left my Magic Mouse for 1 year with old alkaline batteries inside (should pull them off before storing for a long period of time). Today I decided to use this mouse again and found out that the contacts were dirty with acid or something. I have cleaned the contact with alcohol and knife. It works perfectly now.

Great trick.

Worked like a charm.  My problem was the mouse was disconnecting and reconnecting constantly.

with some rechargeables having too large a positive end and they don't make a good connection -  this was my case thanks a lot

I know this is an old post, but for everyone searching for an answer, it can be as simple as just cleaning the battery contact points inside the mouse with a Q-tip and rubbing alcohol. Be sure to clean the contact points on the batteries before putting them back in, too. I found the tip here plus a few more ideas.