Re: Charge or just swap the batteries?
Teslas were all built in a way that allows the battery to be swapped. At one point in 2013 there was even a demo and announcement about an initial roll-out in the US where you'd be able to pull in and the battery would be swapped for a full one.
However the whole thing was shelved in 2016 in favour of rolling out more fast chargers. It can be done, it has been demonstrated, but I'm not sure if more recently built examples still support the concept.