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Oh, hey dude. 40 amps at 200v will completely charge a Roadster in something like 7 hours. I don't know how long for a Model S, but it is probably longer. I am
by jblow 14y ago
Oh, hey dude.
40 amps at 200v will completely charge a Roadster in something like 7 hours. I don't know how long for a Model S, but it is probably longer. I am only familiar with the day-in, day-out of the Roadster so I will stick to that mostly.
So the "charge the car all night (7-8 hours) scenario" only makes sense if you need to charge up the battery 100%, i.e. you were on fumes before you plugged it in, which means you drove 200-240 miles the day before. This may be true for some people but it is not going to be true for most people most of the time.
I drive from SF to Berkeley and back most work days, a 25-minute commute each way, and I like to drive it like a sports car, so I use relatively a lot of power for that length of trip. Generally I use about 20% of the Roadster's battery on such a day, so that's probably about 1.5 hours to charge in a 220V outlet. If everyone did that, you would probably want to stagger the charging times, but it is totally doable even with current setups.
I do think that there would be some increased power draw and that we would want to beef up our electricity infrastructure a little. But that is pretty different than what I see as a Republican talking point, which is something like "there is no way that the USA can support everyone plugging in their EV, it's impossible." That is not my experience as an EV driver.
When I was coming up with the dryer analogy I was just using numbers I pulled off the Internet about what people were measuring their dryer's pull at. It's possible dryers just are not very efficient, I don't know! (Though I thought the whole Energy Star thing was supposed to put pressure on that).