This is after 1 to 2 months it produces manifest weaknesses in terms of autonomy. It's pretty weird! It was announced to last more than a half day normal use (mainly mails and browsing) or more, and in fact I have to recharge my macbook every 2 hours or 1:30. This may be a fault on my battery? For the rest, everything is compatible and the product is of good quality. Too bad because it is above all the autonomy they demand in this kind of product.