Less convenient and less efficient. Charging on 120 V gives your EV a bigger carbon footprint and costs more also.
That's... Completely untrue. I have no idea how you could come to that conclusion.
120 V @ 15 Amps will not allow pre-heating without losing range on a cold morning. The Cybertruck will have a more powerful heat pump than the Model Y. In fact, in cold weather with a cold battery, 120 V won't even start charging for an hour or more after plugging in because it has to heat up the battery before the BMS will allow it to accept even a small charge.
The overhead of the charger running for more hours is less efficient. Yes, it's well established that charging at 120 V is less efficient than 240 V.
That's not how chargers work. At all. It's at most a percent difference or so.
I would get between 2 and 3.5 mph on my Model 3 depending mostly upon how cold it was outside. I averaged just under 3 mph. If you need a long extension cord it could be less because resistance becomes a factor when maxing out a 15 amp outlet and long extension cord. All connections will get a little warm.
Chargers have to rectify the AC into DC. A charger that is rated at 48 amps will be most efficient around 43-48 amps and 240V. Using 120V on a large battery and large charger creates all kinds of inefficiencies. The 10% overhead used as a rule of thumb does not apply when charging with 120V and only 15 amps. The inefficiency is nearly doubled. And the car does not go into the deep sleep because it's never done charging. Using 48 amps and 240 V the car will sleep most of the night.
Yes, 240V charging requires rectification also. The point is, the equipment is designed to be most efficient at or near its rated capacity. Running it at 1/10 power is very inefficient. I regularly get mid-forties in terms of charge miles per hour using 48 amps 240V. You do the math.
Even the Cybertruck with 110v would be *more* convenient than an ICE car. It’s like having an ICE car and the gas fairy sneaks into your yard and adds 4 gallons of gas every night. Even if you still occasionally need to hit the Supercharger, that will eliminate 80% of fuel stops. The range lost while you are heating up your **plugged in** charge is minimal. Unless you are actually doing a 320 mile trip you will never notice it.
I've shared my experience accurately as those of a cold climate Model 3 owner. Many live in even colder climates than I do and have had even a more difficult time of it. A Cybertruck owner will have a more difficult time of it due to it's higher energy consumption.
It makes perfect sense to cite miles added per hour as long as the amount of current is specified. That completes the comparison and is why I said, "you do the math".
That's not how chargers work.
At 120 V 12 Amps the circuitry is very lightly loaded and inefficiencies are introduced. This is only one part of the low efficiency at a very slow charge rate. Please see my explanation above. I have no idea how many charge circuits there are, I just know the net result of 120V charging is lower efficiency.
