A:AnswerIt does not turn off. There is only a button on the underside of the keyboard to initiate the wireless connection. I do not know how long the batteries will last because the alpha keys quit working after only 9 days so I returned mine for an upgrade.
A:AnswerIf I am not mistaken, the Smart TV's have USB ports on them, correct? You may be able to try it by plugging it in but I am not 100% sure it would work.