I hadn't connected the dots that all the various pumps (and fans) have to switch from mechanically connected to the engine via the accessory belt to electrically driven. That's a fair point.
It has been optimal to run accessories electrically for ICE already for several reasons. It has been difficult based on some of the loads on a 12v battery (agm has really helped this)
- Start stop is smoother (and more available) without accessories
- Cooling a turbo after the motor is off - true for the engine as well, heat soak on water pump off can go ~20f over the thermostat
- Brake Boosting without a vacuum (Valvetronic or Hybrid)
- Start stop is smoother (and more available) without accessories
- Cooling a turbo after the motor is off - true for the engine as well, heat soak on water pump off can go ~20f over the thermostat
- Brake Boosting without a vacuum (Valvetronic or Hybrid)
- Air Conditioning at idle