First bad impression: the battery does not fit perfectly with the mouse. Yes it was returning, but forcefully.
Subsequently confirm me my first doubts: the battery was not perfect contact inside the mouse: she was not well fed properly.
I have since returned my good old batteries, which they operate without concern.
Moreover, the concept would have been perfect (2 stars, not more) if the mouse is always charged when laying on the surface. We should have a mains charger is provided.
I'm sorry, but when I turn on my iMac, I use the mouse, so it will not load. When I need it anymore, I turn off the computer (I do not let the sleep if I leave a short time), and mouse load so never saw the Magic Charger loses power computer off. The concept, taken as is, is pretty silly, except for those who leave their computer on constantly of course ...
To load "off computer", which is in my opinion the most logical use, it will invest in a USB charger and more.
So disappointed. Not fit to be installed on an Apple product. When one is accustomed to quality, difficult to settle for about ...