The first one had replaceable batteries, while the second had a built-in battery you recharged.
How to Fix Magic Mouse Disconnect Problems
see if the batteries are reaching the terminals.
Check to see if the battery cover fits tightly enough.
Wait a few seconds and turn it back on.
Delete the Mac’sBluetooth Preference List(after backing up your data).
Re-pair the Bluetooth unit with your Mac.
First-Generation Magic Mouse Battery Issues
The first-generation Magic Mouse made use of good old-fashioned AA alkaline batteries.
This conventional power source soon earned the scorn of some users, who complained of short battery life.
Some users saw less than 30 days of life from a fresh set of AA batteries.
While that’s true, it isn’t a reason to avoid the Magic Mouse 2.
It could be a welcomed feature for anyone looking for a quick coffee break.
Double the recharge time to two minutes; the mouse can go nine hours before recharging.
So, plug it in and take a brief break.
The Magic Mouse’s battery compartment has what seems to be a weak design for the battery contacts.
No power means no Bluetooth connectivity.
Additionally, the disconnect may result from a weak spring in the contacts or a poor contact design.
you’ve got the option to also try adjusting the mouse sensitivity.
Hold downCTRLon the keyboard and click with the Magic Mouse.
Tofix a frozen mouse cursor on a Mac, force quit and restart the active app.
Then, update the gadget firmware and cycle your Mac.
