hcbxzz@hcbxzz@lemmy.world

Replying to @⁨Mustachius_Grumpius@thelemmy.club⁩

Lets say you have a 300mi range EV. that sounds great, until you realize you can’t actually use it all.

We like to save the bottom 20% for emergencies and battery longevity, and fast charging is too slow above 80% to be worth it, so effectively, on a road trip. only the 20%-80% range is usable. Your 300mi+ range just turned into 180mi of usable range. And then factor in ~10% battery degradation over time, or range reduction in winter conditions, and you could easily have as little as 150mi of actual usable range between charging stops. And that’s assuming the charging stations are perfectly spaced apart.

That’s only a little more than 2 hours at highway speeds. And that’s not along time to be driving, even for a single person. In gas cars, we will regularly do 3-4 hours without stopping at all. And if we do stop for a break, it’s rarely at gas stations or places with charging stations. Those are typically awful places to spend the limited amount of time you have on a trip.

In practice, the charging interval is far, far less than the ideal 300mi and far more frequent.

Asetru@Asetru@feddit.org

Replying to @⁨hcbxzz@lemmy.world⁩

Except nmc batteries have no issue with being below 20 or above 80 percent soc, they have an issue with staying outside those values for longer periods of time. That’s why people say you shouldn’t charge above 80% in your day to day driving, because you’ll usually charge it to 100% and then just have the car parked in your driveway for hours with a full battery. When you’re on a road trip, you can absolutely use the bottom 20% of your battery as you’ll be charging it up immediately. You can also charge it up to 100% before starting your road trip with next to no effects on the battery for the same reasons.

So, yes, there’s obviously degradation for older cars and there’s the obvious effect of batteries charging slower the more charged they are, so I’ll give you that you won’t fully charge your car during a road (if you don’t have kids, I guess, as ours will absolutely drag out the break long enough to have the car sitting at 100%), but at the end of the day, the effects aren’t nearly as terrible as you describe, as you’d be at about 90% range for the first episode of the trip and about 80% for consecutive ones.

en