R1S Charging speeds and range

[Vladimir123]

I just looked at my last trip from MD-FL. I typically just let the car plan the route and leave when it tells me to. I could probably stretch out the miles if I did 80% and let the car recalculate. I have a 2023 Log Range X refreshed model with 100KW battery and 20-inch wheels, but I think it's only 93% usable, AC on 70 and drive 5 over the limit. Ken definitely did better than I did, I travel this route every other month and the stops are always the same just a little more or less KW added depending on weather. Typical costs $97-$112. My Ford Explorer 4 cylinder does it with a cost of $95-$115, so no cost benefits just EVs are fun to drive,

Here are my numbers - the reverse trip is the same stops except if I charge to 100% at the house, I can make it to Daytona (231 miles far less than the advertised 326) with a 10-12% left, eliminating 1 stop.

			Miles traveled	KW Added
largo MD	to	Stoney Creek VA	159​	45​	Started off with 79%
Stoney Creek VA	to	Benson, NC	136​	60​
Benson, NC	to	Saint George SC	203​	56​
Saint George SC	to	brunswick GA	152​	63​
brunswick GA	to	daytona	156​	53​
daytona	to	Port St Lucia	147​	32​	had to stop to get enough to get home
Port St Lucia	to	home	84​		Arrived with 8%

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[Rividiculous]

In my first 1,000 miles, I haven’t paid much attention to charging speed. (DC fast charged twice and it seemed fine.)

I have noticed, though, that I am spot on with Rivian’s range estimates. If I go 61.5 miles, I use 15% of the battery. (15% of the 410 range.) I’m sure it wouldn’t be the case if I were regularly highway cruising at 75mph+, but I guess my use case matches the EPA testing regime. I’m generally driving in the greater NYC area with lots of stop and go and occasional highway speeds. Occasionally maybe 80 mph but mostly 65 mph and below both due to traffic and because I don’t want to kill anyone.

I’ll see a big hit when winter arrives, I’m sure, but it’s almost funny how close I am to the range estimates now.

 

[usulio]

I think you’re overestimating the real world, usable range. You’d be fast charging about every ~200 miles on a long trip.

141.5 kW battery
2.3 miles/kWh on the highway
using from 80% down to 15% SOC
Equals 212 miles between charging

You could get the Rivian app and test the route planning for the model you’re looking at.

I think this is a good realistic assessment. Note that efficiency is very speed dependent due to air resistance, the answer at 80mph will be worse than at 75.

 

[Vladimir123]

I think this is a good realistic assessment. Note that efficiency is very speed dependent due to air resistance, the answer at 80mph will be worse than at 75.

Thank you - so what I am seeing from several comments is that the EPA rating of 410 miles compared to the real-world miles is worse than the Tesla estimates.
I was really looking at the R1S to replace the X hoping the 410 would actually give me enough range to hit some remote places, after owning 3 Teslas over the years I know speed, rain, wind and everything else effects the range just was hoping the Rivian was better. Guess I keep my Tesla and use around town or where the chargers are abundant and the ICE for remote road trips.

 

[Dave Cundiff]

I think I get about the rated range at 55 mph or lower, outside temp 75F or higher, All Purpose mode, standard height, and reasonably continuous travel. If I'm outside those parameters, I plan accordingly. Often the Rivian Nav or ABRP take my actual driving style into account in their estimates.

I agree with other commenters: Rivian should use the test method and verification standards that best match other manufacturers' test methods and verification standards.

Best to all!

 

[usulio]

Thank you - so what I am seeing from several comments is that the EPA rating of 410 miles compared to the real-world miles is worse than the Tesla estimates.
I was really looking at the R1S to replace the X hoping the 410 would actually give me enough range to hit some remote places, after owning 3 Teslas over the years I know speed, rain, wind and everything else effects the range just was hoping the Rivian was better. Guess I keep my Tesla and use around town or where the chargers are abundant and the ICE for remote road trips.

My Gen 1 R1S (Quad, Large) will easily exceed the rated range when it comes to back roads and adventures with an average speed under 55mph. I'm sure that'll be true for you too. Where it's a different story is highway driving at 75+. My understanding is that Tesla is not better than Rivian in this regard.

 

[emoore]

Thank you - so what I am seeing from several comments is that the EPA rating of 410 miles compared to the real-world miles is worse than the Tesla estimates.
I was really looking at the R1S to replace the X hoping the 410 would actually give me enough range to hit some remote places, after owning 3 Teslas over the years I know speed, rain, wind and everything else effects the range just was hoping the Rivian was better. Guess I keep my Tesla and use around town or where the chargers are abundant and the ICE for remote road trips.

Not sure how you came to that conclusion but it’s your choice if you want a Rivian or not.

 

[Vladimir123]

Not sure how you came to that conclusion but it’s your choice if you want a Rivian or not.

Maybe I am not looking at this correctly by focusing on the highway driving. Several comments said 200 miles of range at highway speeds 80%-15% and it looks like 35 minutes to charge. My Tesla will do 197 miles 80-10% with a 20 minute charge time.
I need to look more at the non highway speeds. I own a lot of stock in Rivian and I want them to CRUSH Tesla so I want to move away from Tesla.

 

[MidnightM00N]

Maybe I am not looking at this correctly by focusing on the highway driving. Several comments said 200 miles of range at highway speeds 80%-15% and it looks like 35 minutes to charge. My Tesla will do 197 miles 80-10% with a 20 minute charge time.
I need to look more at the non highway speeds. I own a lot of stock in Rivian and I want them to CRUSH Tesla so I want to move away from Tesla.

I think your assessment of the data provided to you is fairly accurate. I think everyone just has to be really clear on how much of the battery they are willing to use, what efficiency can be expected, and what reasonable charging times are on a personal level.

I'm getting about 2.3-2.4mi/kWh on my Gen 2 Max (22" range wheels) over 1,500 miles, mostly at 75+mph speeds.

On a max battery, you'd get a bit over the 200 miles of ranges that's been estimated if you use 65% of the battery (80%-15%):
141.5kwh * 2.3mi/kWh * 0.65 = 212mi

If you're willing to use 80%-10% = 228mi

More efficiency (drafting, slowing down, or putting the suspension in low) will obviously change that equation.

I, like you, am coming from a Tesla (2015 MS with poor charging speed and okay range) and made a quick reference when I was thinking about different builds and real world range:

Those actual range numbers are obviously for 100%-0%, but just calculate whatever fraction of the battery you're willing to use. DM Large rated range seems quite dubious, btw. Std and max are optimistic but more attainable.

Charging speeds I'm less clear on at this point. The charge curve seems solid if you can get a DC charger that will provide good numbers. If most of your routes include v3 Tesla chargers open to Rivian, then you're in good shape (mine sadly do not).

Hope that helps your decision-making some.

 

[CarlM408]

Odd, Tesla is pretty universally derided for having inflated EPA range numbers compared to other manufacturers, but maybe it's the devil you know...
https://www.consumerreports.org/car...ts-models-that-beat-epa-estimates-a1103288135

 

[Vladimir123]

I think your assessment of the data provided to you is fairly accurate. I think everyone just has to be really clear on how much of the battery they are willing to use, what efficiency can be expected, and what reasonable charging times are on a personal level.

I'm getting about 2.3-2.4mi/kWh on my Gen 2 Max (22" range wheels) over 1,500 miles, mostly at 75+mph speeds.

On a max battery, you'd get a bit over the 200 miles of ranges that's been estimated if you use 65% of the battery (80%-15%):
141.5kwh * 2.3mi/kWh * 0.65 = 212mi

If you're willing to use 80%-10% = 228mi

More efficiency (drafting, slowing down, or putting the suspension in low) will obviously change that equation.

I, like you, am coming from a Tesla (2015 MS with poor charging speed and okay range) and made a quick reference when I was thinking about different builds and real world range:

Those actual range numbers are obviously for 100%-0%, but just calculate whatever fraction of the battery you're willing to use. DM Large rated range seems quite dubious, btw. Std and max are optimistic but more attainable.

Charging speeds I'm less clear on at this point. The charge curve seems solid if you can get a DC charger that will provide good numbers. If most of your routes include v3 Tesla chargers open to Rivian, then you're in good shape (mine sadly do not).

Hope that helps your decision-making some.

Thank you for this - this really helped. I will probably get the Rivian in April when the Tesla is paid off.
I am lucky enough that a lot of the chargers on the East Coast are V3 or at least one in range so that would help a lot. Hopefully the CSS chargers will realize that thy are losing money with everyone going to Tesla superchargers that they will step up their networks.

 

[Vladimir123]

Odd, Tesla is pretty universally derided for having inflated EPA range numbers compared to other manufacturers, but maybe it's the devil you know...
https://www.consumerreports.org/car...ts-models-that-beat-epa-estimates-a1103288135

Yes its the devil I know and the devil I hate.

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