> The base model, however, only supports 400V charging for its smaller 73.6kWh battery, This suggests the base model is 400v, while the other models are 800v.

> The base model, however, only supports 400V charging for its smaller 73.6kWh battery, This suggests the base model is 400v, while the other models are 800v. That in turn means that the onboard charger, DC/DC, motor inverters and AC compressor inverter must be different between the models, or that they have designed 400v/800v dual-mode hardware for all those things. Having so many parts different between models drives up costs. Having dual-mode hardware also drives up costs - typically the power electronics have cost ~proportional to max voltage * max current. If you need a fixed output power, you are only using half of either voltage or current if the hardware is dual-mode, so you are wasting half of the power electronics cost, which is huge. (before someone points out that Tesla cybertruck has dual-mode 400v/800v since it can rewire the battery to charge at either voltage... Well it never drives along in the 400 volt mode. And even then, I'd bet the AC compressor is at dramatically reduced power output while on a 400v charger)