I'm charging at home off the UMC for now. So that's ~ 240V/10A = 2.4kW here in the UK. But I've heard that the climate control can use up to 6kw, and there's draw from the battery heater as well? If I pre-condition while on the UMC, does the climate system then draw down the battery, or just the mains, or both? Is there a set sequence in which this occurs?