have had this problem for about a week - intermittent "lost Connection" followed by a "Connection" notification. Its been driving me nuts !
Have always used Duracell AA's and have NEVER had this problem. I believe my mouse batery cover has become loose with age and lots of use.
I went out and BOUGHT new ENERGIZER ADVANCED LITHIUM AA batteries and installed them in my mouse. This was after I did the following:
* removed AA Duracell batteries
* cleaned the contacts (both negative and positive) with rubbing alcohol and a clean q-tip
* Allowed inside of battery case to air dry
* used small pieces of aluminum foil on the BOTTOMS of each NEW battery where it meets the spring-like contact
* installed batteries
* installed a folded up piece of paper to ensure the battery COVER is secure. Clicked it into place
* disconnected Magic mouse from Bluetooth pairing on my iMac using a WIRED mouse.
* Shutdown iMac
* Removed all USB connected devices and pulled out power cord on iMac. Plugged everything in again after 30 seconds.
* Re-started iMac.
* Set up Magic mouse as a new device in System Preferences/Bluetooth
* Paired the device and it was recognized.
So far, its been about 20 minutes and the situation SEEMS to be corrected ! I will of course, report back if it FAILS me.
i am hopeful that the BATTERY type is actually what has resolved this matter.
By the way, I have a bluetooth printer paired with this iMac and have had ABSOLUTELY no issues with it. This is a magic-mouse-only matter.
G O O D L U C K to anyone dealing with an unreliable Magic Mouse !
🙂🙂