Surprise-surprise

[ny_quant]

A new AAA study finds that when the thermometer dropped to 20 degrees Fahrenheit, range fell by an average of 41 percent on the five models it tested… Some EV drivers recently found that range can drop by half when the mercury tumbles into negative territory.

https://www.cnbc.com/2019/02/06/aaa-confirms-what-tesla-bmw-nissan-ev-owners-suspected-of-cold-weather.html

Comments

[ny-quant.livejournal.com]

Must be true then

[misha-b.livejournal.com]

What is exactly your question? These are pretty basic facts about EV's. I don't have an exact analysis with full breakdown depending on your usage pattern. I am sure you can find them if you search online.

[ny-quant.livejournal.com]

The question is why would I believe your opinion more than AAA study?

[misha-b.livejournal.com]

There is no opinion here. Those are facts. The study seems to confuse different sources of energy drain. Your actual range depends greatly on your usage profile, if you are simply driving on a highway it will be much closer to the rated range (see the link I gave you).

[ny-quant.livejournal.com]

// The study seems to confuse different sources of energy drain

How so?

[misha-b.livejournal.com]

Here is an example: https://insideevs.com/tesla-model-3-road-trip-in-bitter-cold-2-feet-of-snow-video/

33% loss of range in much colder weather + snow on the ground.

[ny-quant.livejournal.com]

Thus your claim about "(3) is much smaller than 40% " is already debunked.

[misha-b.livejournal.com]

What do you mean debunked? Those conditions were much worse than in the AAA study. Much colder + snow on the road.

Are you saying that the car must drive close to its rated range under _any_ conditions? That is physically impossible and not true for ICE cars either.

[ny-quant.livejournal.com]

debunked means shown to be incorrect but maybe it is indeed not apples-to-apples comparison

No, I'm not saying this. IC engines powered cars also don't but it's much less of a problem for obvious reasons.

[misha-b.livejournal.com]

Everything depends on your usage pattern. If you are charging at home or at work, the range loss on a daily basis can be significant, but is not something you notice at all (at least with a reasonably long-range EV, such as Tesla or Bolt) (I suppose there are a few people commuting >200 miles daily for whom it is an issue).

If you do not have a place to charge during the day or overnight, the range loss can be a serious inconvenience.

Finally, if you are driving long distance, the expected range loss is typically smaller than what they report (perhaps ~20-30% in cold weather with heater on, depending on conditions). However one has to be aware of it and plan accordingly. That is the usage where EV is most difference from ICE cars.