The battery will still be ridiculously heavy and very large, well outside the limits of human ability to move it. So you need some sort of machinery to do it, a

The battery will still be ridiculously heavy and very large, well outside the limits of human ability to move it. So you need some sort of machinery to do it, as well as a human operator. Also, keep in mind you don't just need very robust electrical quick-connects, you also need fluid quick-connects for the heating/cooling. As well as a system to bleed air from the loops inside the bus.