Apple Magic Mouse - Manual (Page 7)

7
Latch
You may have to click your Apple Magic Mouse
once to reconnect it with your Mac.
WARNING: Replace both batteries at the
same time. Don’t mix old batteries with new
batteries or mix battery types (for example,
alkaline and lithium batteries). Don’t open or
puncture the batteries, install them backwards,
or expose them to fire, high temperatures, or
water. Don’t charge the nonrechargeable AA
batteries that came with your mouse. Keep
batteries out of the reach of children.