Why does my imac mouse keep dropping out?

My bluetooth mouse on my iMac keeps dropping out even though it has relatively new batteries. Is there any hope for it?

Sometimes making a Bluetooth device a favourite can help. It fixed it for me when I had exactly the same problem:
System Preferences>Bluetooth, select the mouse on the left and then click on the small 'cog' at the bottom left of the window and select 'Show more info'. You should now get the option to make the mouse a 'favourite'.
I've also seen it suggested on here that adding a small piece of thin card/paper to where the batteries are can make them more secure and stop them breaking contact with the terminals. Not tried this one myself as I didn't need to.

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    ~~~~~~~~~~~~~~~~~~~~~~~
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    ~~~~~~~~~~~~~~~
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