[Retric]

To pull this off efficenctly they are going to want a ~20,000 kg battery pack that's easily swapable on landing. That's going to take a fairly significant change to an airframe and weight distribution is going to an issue. On the other hand they would also want smaller gas tanks if it's really only doing 300 mile trips + buffer.

Longer term, they would want to start using electricity for propulsion and ramp that up as batteries improve.