On 220V, mission claims the following charge times (assume 0 to 95%):
12 kWh 1.0h .. 11.4 kW, 52A
15 kWh 1.42h .. 10.0 kW, 46A
17 kWh 1.67h .. 9.7 kW, 44A
With maybe a bit of rounding, this is pretty consistent with a 10 kW charge rate.
DC charge rate is < 30 minutes for all battery sizes, meaning the highest capacity battery pack must be able to accept a charge rate > 35 kW.