[cogman10]

Most batteries have ~1C charging time (Which translates to being able to go from 0% SoC to 100% SoC in 1 hour).

For most flights, you are looking to anywhere from 1 to 2 hours to get a plane ready for the next flight. Plenty of time to plug it in and charge it up.

The bigger problem would be delivering the massive amount of juice needed to charge a plane up in that time frame. For that, maybe it would make sense to swap batteries and have some on reserve.