The swap takes six minutes (example https://www.youtube.com/watch?v=VmWL1hZQmD0 https://www.youtube.com/watch?v=VmWL1hZQmD0). The swap stations charge the packs

The swap takes six minutes (example https://www.youtube.com/watch?v=VmWL1hZQmD0 https://www.youtube.com/watch?v=VmWL1hZQmD0). The swap stations charge the packs to 90%. So swapping in a 100 kWh pack that has been charged to 90 kWh is the equivalent of charging the car at 900 kW. Nio will start introducing 150 kWh packs in the same physical form factor which they charge to 135 kWh. Swapping one of those in would be the equivalent of charging at 1.35 megawatts.