Magic Mouse battery contact is loose

Thanks! Yeah i saw that, but i didn't find a fix and that teardown didn't make me more confident of opening the thing up, with all that glue.

If you look carefully you'll see the contacts are independent of each other. One rests against the PCB on the right and the other rests against the on/off switch. It appears there is a difference of depth the spring contacts can travel. If you not the contact its self is loose the plastic weld which holds it may have snapped on the back side.

Apple does not offer any parts for their mouse's or trackpads.

Ok so that would explain exactly what i see. Thanks a bunch! My keyboard started to show the same behaviour, as well as a bluetooth audio device. So it might not be the mouse. Thanks again for the information!

When you open the battery cover you find the + contacts withdraw into the frame, when you open the mouse up the + contacts have broken away from the feeble plastic mounts inside and have been pushed too far away from the post on the battery (less than 1 mm.). This is more pronounced on an older rechargeable battery with the plastic negative case lining swelling and fattening through use. Quick dodgy fix , roll a small loose ball of aluminum foil (5mm) and gently squash it into both + holes to extend the contact area. I haven't fixed the two ones I have pulled apart yet but I'm thinking, hold the contact plates back where they should be with a needle then hot glue the be-jeesus out of em. The left side doesn't push back so far as it hits a block but the right side has nothing behind it and just keeps bending.