1) It runs on two double a batteries
2)you do not need to plug anything as it uses bluethooth (built into your mac)
3)it takes under a minute to set up (put batteries in, switch on, select the mouse under the bluetooth pane)
The Magic Mouse is natively fully compatible with all Apple Computers running Leopard 10.5.8 or Snow Leopard 10.6.1 or later and has Windows drivers as well. Setup only requires turning on Bluetooth and discovering the mouse.
It runs using bluetooth. Powered with AA batteries, which can be rechargeable.
Apple do have an AA battery charger, and they provide 6 batteries with it too.
Since buying my Magic Mouse in August. I've only just had to recharge.