A:AnswerIf your devices have Bluetooth, you can pair them wirelessly. Also this speaker has a 3.5mm headphone jack to connect your devices with a cable.
A:AnswerYes you can use a battery bank to charge this speaker just need a micro USB cable like the one included with the speaker at the time of purchase.
A:AnswerI've never tried it, but mainly because I've already got speakers on two of my TV's and I don't think I have Bluetooth capable TV's. It works great with my phones though.