R2 10-80% charge test (by State Of Charge)

[rogunenode]

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[macb00kemdanno]

I'd like faster charging just as much as the next guy, but after looking at my stats over the past year, my usage nearly mirrors what RJ expected for fast-charging sessions. 89% of my time is spent charging at home, 4% at my MiL's beach house, and the other 7% is Supercharging. And this is from someone who drives ~20,000 miles/year.

I think I'll do just fine with the R2's charging curve

 

[rogunenode]

10-80 in 27min is fine for my needs. Would be nice if Rivian could improve the curve to save a few minutes.

Interesting that Tom had an a CCS adapter pin melt when using an adapter due to the R2's high amperage draw.

 

[Jeremy3292]

10-80 in 27min is fine for my needs. Would be nice if Rivian could improve the curve to save a few minutes.

Interesting that Tom had an a CCS adapter pin melt when using an adapter due to the R2's high amperage draw.

You won't find a 400v car that charges faster. Have to go to 800v to see anything better. Tom did say you maybe could shave off 1 more minute in his video though.

The CCS adapters are only rated for 500 amps; he pulled over 600 amps.

 

[Jeremy3292]

Interesting Tom said he thinks they can shave another 2 minutes off with an OTA update once they have enough real world user data presumably. That would be 10 to 80% in 25 minutes.

Either way the best plan for road tripping is 10% to 70% in 20 min. No need to wait til 80%, diminishing returns.

 

[tivoboy]

10-80 in 27min is fine for my needs. Would be nice if Rivian could improve the curve to save a few minutes.

Interesting that Tom had an a CCS adapter pin melt when using an adapter due to the R2's high amperage draw.

In my TM3 LR RWD (which is one of the faster charging speed tesla) I can do 10-80% in 22-24min, ONE time when all things aligned it was 20, but it’s usually 22-24..I’m fine with an extra FIVE MINUTES even when charging. That’s a couple more email I can get to before heading on my journey.

If this was going to be an UBER or Robotaxi type of product, or traditional high commuter vehicle, TIME IS MONEY, and charging curves need to be nearly half these types of speeds. (The Chinese are already totally there, with charge speeds about ONE THIRD these speeds)

But I just don’t see it being a key differentiator for this type of vehicle.

 

[River Ghost]

Is an 800 volt architecture better? The most widespread DC fast charger is the Tesla version 3 Supercharger. Charging an 800 volt car typically only can reach 150 kW at a version 3 Supercharger while the 400 volt Rivian R2 reaches 230 kw. On an Electrify America fast charger an 800 volt car can charge much faster although these chargers often have issues that lower the charging speed or fail to charge at all. So while 800 volt architectures can charge faster in theory in practice they often charge slower. There are version 4 Tesla Superchargers and other newer DC fast chargers that will support the full charging speed of 800 volt architecture.

https://www.bozy.com/2025-hyundai-ioniq-5-charging-vs-tesla-supercharger/

 

[iamnid]

Is an 800 volt architecture better? The most widespread DC fast charger is the Tesla version 3 Supercharger. Charging an 800 volt car typically only can reach 150 kW at a version 3 Supercharger while the 400 volt Rivian R2 reaches 230 kw. On an Electrify America fast charger an 800 volt car can charge much faster although these chargers often have issues that lower the charging speed or fail to charge at all. So while 800 volt architectures can charge faster in theory in practice they often charge slower. There are version 4 Tesla Superchargers and other newer DC fast chargers that will support the full charging speed of 800 volt architecture.

https://www.bozy.com/2025-hyundai-ioniq-5-charging-vs-tesla-supercharger/

It depends on the specific car. Some 800v cars can go from two 400v packs wired in series (800v) to two wired parallel (400v) to achieve maximum speeds from a 400v DCFC like a v3 tesla charger. GM vehicles do this as does the cybertruck.

You are correct though, for the ones that can't do that, they get very poor charging on 400v DC fast chargers.

 

[electruck]

I know I'm likely in the minority on this but I don't actually get excited about the prospects of 10-80% charging that's going to take anywhere in the 5-25 min range. I simply can't complete a rest stop and relieve the dogs, hit the restrooms, get snacks/food, etc that quickly. so, if charging completes while I'm away from the car, I'm rudely blocking a charger at best or incurring idle charges at worst. unless they can get 10-80% down to about 5 mins (and of course we're nowhere near that with current battery chemistries), which is about the limit for how long I'm willing to stand by watching the electrons flow, then slightly faster charging only creates an inconvenience for me. I've done numerous road trips over the past 3+ years of R1 ownership and I have yet to find myself hanging out waiting on charging to complete. but I've also never had to deal with idle fees or blocking others because my R1 was done charging but I'm still away from the vehicle.

 

[savethemanual]

Do Rivian DCFC's deliver 600 amps to maximize R2 charge curve? I sure would hope so.

 

[2kwik4u]

I'd like faster charging just as much as the next guy, but after looking at my stats over the past year, my usage nearly mirrors what RJ expected for fast-charging sessions. 89% of my time is spent charging at home, 4% at my MiL's beach house, and the other 7% is Supercharging. And this is from someone who drives ~20,000 miles/year.

I think I'll do just fine with the R2's charging curve

Where did you pull those stats from? I drive similar amounts and would love to investigate this.

 

[lefkonj]

It has enough range and is quick enough with regards to charging for me. I have not had any issues with 3.5 years of my R1S, the R2 seems fine.

 

[Jeremy3292]

In my TM3 LR RWD (which is one of the faster charging speed tesla) I can do 10-80% in 22-24min, ONE time when all things aligned it was 20, but it’s usually 22-24..I’m fine with an extra FIVE MINUTES even when charging. That’s a couple more email I can get to before heading on my journey.

I'm gunna be honest with you as I simply don't believe this as someone who owned a 2021 M3 LR and a 2024 M3P. 10 to 70% sure but definitely not 10 to 80%. In fact I did 10% to 80% a month ago as a test at an empty V4 supercharger at 8am in 75 degree weather and it took 30 minutes. I can post the charging session from the Tesla app if needed lol.

 

[Jeremy3292]

I know I'm likely in the minority on this but I don't actually get excited about the prospects of 10-80% charging that's going to take anywhere in the 5-25 min range. I simply can't complete a rest stop and relieve the dogs, hit the restrooms, get snacks/food, etc that quickly. so, if charging completes while I'm away from the car, I'm rudely blocking a charger at best or incurring idle charges at worst. unless they can get 10-80% down to about 5 mins (and of course we're nowhere near that with current battery chemistries), which is about the limit for how long I'm willing to stand by watching the electrons flow, then slightly faster charging only creates an inconvenience for me. I've done numerous road trips over the past 3+ years of R1 ownership and I have yet to find myself hanging out waiting on charging to complete. but I've also never had to deal with idle fees or blocking others because my R1 was done charging but I'm still away from the vehicle.

R1 charging is considerable slower than R2 is, but I agree with your thoughts as 20 minutes or less is ideal for me. I'll be splashing and dashing in the 10% to 71%ish range.

 

[iamnid]

Where did you pull those stats from? I drive similar amounts and would love to investigate this.

These look to be screenshots from the Tesla app

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