A:AnswerIt takes a button battery that’s supposed to last a couple of years. The keyboard is only using battery when magnetically attached to the iPad.
A:AnswerWhen you get the PIN number to pair with your iPad, type in the number on your slim folio and press the enter key. The directions does not explicitly say this.
A:AnswerHey! No, the Slim Folio keyboard case is not available in Portuguese layout in the United States and Canada region. You may try checking with third party resellers.