With the recent regulations concerning electronic devices having to be charged, to take them on the plane, I'm wondering, do you also have to do this with electronics bought airside at the airport, which would presumably have very little charge when taken out of the box for the first time? Or do they get wrapped in a special bag like liquids do?
While it doesn’t specify if it must be fully charged
As the traveling public knows, all electronic devices are screened by security officers. During the security examination, officers may also ask that owners power up some devices, including cell phones. Powerless devices will not be permitted onboard the aircraft. The traveler may also undergo additional screening.
It must at least turn on, so if you buy a new electronic device if it can turn on there should not be a problem, of course as always it depends on the security guard.
But as Gregory says if you bought after the security check there shouldn’t be a problem