Per Guide: 250KW max charging and streaming services coming soon

[emoore]

Is this at EA chargers?? On neither of my rivians have I ever been able to sustain 220+ for more than 5 minutes without EA throttling down to about 37-40kw

EA throttling down to 37kw is due to the charging cable cooling failing. If you plug into a 150kw EA station you will get over 150kw for a much longer time.

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[Alieti]

Sure but the RAN also doesn't stay above 200kw very long. That's not EA's fault, that's due to Rivian's charging curve.

I’ve plugged in at a ran and got 200+ for about 15 minutes. The changing curve is 200+ from 0-45%. That’s a solid 15 minutes. EA can’t handle that because of their plugs. 150 chargers can, but that’s because max they go is about 170. And honestly I’m the 5 different ea stations I’ve tried in Florida, none of the old 150s ever work well for me.

 

[AYAYRON]

During a good session, my R1T will hold >200 kW for 15 minutes when starting from a low SoC (~10%). I was suitably impressed because it added 50 kWh in 15 minutes.

15 minutes is " a few minutes" in my opinion, but, that's an uneducated opinion, it feels like if it's 200kw capable (or 250 in the future) then you should expect 200kw delivery until 80% or so, my truck never makes it past 60% without throttling regardless of whether I'm getting 140kw or higher (most of the chargers I can use max out around 140kw) and it lasts about 15-20 minutes then throttles down, but, anytime I have to have more than 60% I have noticed it decline repeatedly at 60% then more at 70% and more at 80%, which it seems like 80% would be the accepted battery % to start throttling but the truck does it at 60

 

[Dark-Fx]

It seems incredibly foolish in our legal environment stating it can support up to 300KW of power from the beginning if they cannot deliver it. The recharge speed is a key item for me and I am expecting the charge curve to continue to improve as they have more data as we have seen already since they started rolling out.

It's entirely possible they have internally tested charging their batteries up to the required ~675A to hit the 300kW charge level. But, I wouldn't be surprised to find out this "250kW" news was because of the chemistry change for the max pack vehicles, meaning only available for the max pack. Faster charge rate would definitely make me consider upgrading, especially if they can hold it for a lot longer.

 

[WorldComposting]

I would just like the rear screen to allow the kids to control their own temperature, that is my only request. I mean my 2008 BMW X5 had this for goodness sake. It is the one thing I was genuinely surprised by upon pickup. Never even thought that it would not have 3 zone climate control.

I didn't realize this either and my Subaru Ascent has 3 zone. My kids end up switching seats based on who they want to sit behind as I blast the A/C and my wife turns her side off.

I've used the 350kw EA chargers to get over 200kw. Only once I got throttled to 37kw due to cable cooling broken.

I've had the opposite experience I've hit the EA chargers 6 times and only pulled more than 50kw 2 times. Each time I plugged into the 350kw first but if those didn't deliver I tried the 150kw and the entire station was only charging at 50kw.

EA throttling down to 37kw is due to the charging cable cooling failing. If you plug into a 150kw EA station you will get over 150kw for a much longer time.

I find all the EA stations either work at full rate or charge at 50kw. EA really needs to fix this issue especially in areas where they are the only high speed chargers in town!

 

[Nano]

I found this spec page for a Tesla Plaid which has voltage up to 407 volts and can hit 250kw for a short period of time.
We know the Rivian runs at 440 volts from previous posts so if I apply the same math it could theoretically handle 275kw for a period of time.

https://ev-database.org/car/1405/Tesla-Model-S-Plaid

I agree it is really more about the charging performance over time vs peak power. Same is true for life ?

I found it odd the guide went out of her way to reassure me improvements were coming soon where other topics like asking when we can get reinforced bumpers with winches and other items she just said are in development but no timelines.

As for the streaming apps I took that as being enabled on the main screen and not any others FWIW.

 

[vandy1981]

We know the Rivian runs at 440 volts from previous posts so if I apply the same math it could theoretically handle 275kw for a period of time.

That's the edit: maximum large max pack voltage which would only be available at a very high state of charge. You wouldn't want that max kW with full cells.

I'm guessing it's well below 400 volts when SOC is lower than 50%.

 

[Dark-Fx]

That's the max pack voltage which would only be available at a very high state of charge. You wouldn't want that max kW with full cells.

I'm guessing it's well below 400 volts when SOC is lower than 50%.

Voltage on the system has to go up when you are charging the battery. Lithium batteries charge at a constant current until it gets higher into the state of charge, then runs constant voltage to complete the charge. If your cell voltage goes too high it can damage them even if they would rest back below the limit.

 

[SeaGeo]

minutes" in my opinion, but, that's an uneducated opinion, it feels like if it's 200kw capable (or 250 in the future) then you should expect 200kw delivery until 80% or s

This would cause battery problems. The cells reach their nominal voltage at 500A at around 50% SOC. If you take the charging curve and overlay it on the lucid dream charging curve (it has the same cells) and adjust for number of cells, you see that overall they track pretty closely once they hit peak voltage. However, Rivian does a stair-stepped approach that's less efficient than a smooth reduction in current as SOC increases while maintaining pack voltage.

 

[bike123.com]

250kW will be nice, but the charging curve is much more important than top charging speed. If it could charge at 1mW for 1 sec, then the top end of 1mW means nothing to me.

Streaming will be nice when stuck at slower chargers, but I hope they include support for Plex.

Help me out experts
When we charge our pesky little bolts or Kona wagons, most dc L3 get the job done .
We see tgg he at CCS can vary from 24 to 350.
Will a 250 or 350 do no more than a 150?
Our hometown dc fast trickles 18 miles an hour.
The EA 350’s start at around 500 mi/ hr then trickle v e r y s. l. o w l. y at the end
thanks experts

 

[SANZC02]

Help me out experts
When we charge our pesky little bolts or Kona wagons, most dc L3 get the job done .
We see tgg he at CCS can vary from 24 to 350.
Will a 250 or 350 do no more than a 150?
Our hometown dc fast trickles 18 miles an hour.
The EA 350’s start at around 500 mi/ hr then trickle v e r y s. l. o w l. y at the end
thanks experts

In my experience the peak rates over 200kW do not last very long. I have seen rates in the 170s on the 150 units with my R1S so total time for me between a 150 or 350 kW EA charger is under 5 minutes.

 

[Revelation]

Help me out experts
When we charge our pesky little bolts or Kona wagons, most dc L3 get the job done .
We see tgg he at CCS can vary from 24 to 350.
Will a 250 or 350 do no more than a 150?
Our hometown dc fast trickles 18 miles an hour.
The EA 350’s start at around 500 mi/ hr then trickle v e r y s. l. o w l. y at the end
thanks experts

So a couple of things...

If a CCS charging station advertises 250kW or 350kW means nothing if your vehicle does not support that charging speed. Bolts charge at a max of 150kW. That means it doesn't matter what the station offers, you can only charge at 150kW.

For instance my R1T can charge at 220kW, at least the highest I have ever seen it, so it won't ever hit 350kW if the charging station is a 350kW one.

Now we get into charging curves. Today, no battery design / chemistry allows for high charging rates through most of the battery. In other words I cannot charge at 220kW in my R1T from 0-100%, it's just not possible.

I don't have a handy R1T charging graph, but if memory server me correctly I can hit 220kW up to the 50-65% SoC. (State of Charge) Charging would then reduce at certain SoC to ensure the battery is not being damaged by putting too much energy in it too quickly. By the time I hit 90% I would be down to around 50kW, again if memory servers me correctly. Your Bolt would drop to below 100kW at around 50% SoC. By 90% your bolt is somewhere around 20-50kW max charging speed.

If you are only getting 18 mi/hour you are not truly DCFC fast charging. Whether it is a DC or AC charging station you are really only getting 6-9kW of power delivered to your vehicle - depending on your EV. Here, the battery size and efficiency of your EV will determine what your miles per hour charging speed is, so it is best to talk in terms of kW delivered to ensure we are on the same page.

 

[bike123.com]

In my experience the peak rates over 200kW do not last very long. I have seen rates in the 170s on the 150 units with my R1S so total time for me between a 150 or 350 kW EA charger is under 5 minutes.

Ok
I won’t avoid the 150’s if that’s what we find on tomorrows 400 miler from DC to bumfork Va ( Bristol)

So a couple of things...

If a CCS charging station advertises 250kW or 350kW means nothing if your vehicle does not support that charging speed. Bolts charge at a max of 150kW. That means it doesn't matter what the station offers, you can only charge at 150kW.

For instance my R1T can charge at 220kW, at least the highest I have ever seen it, so it won't ever hit 350kW if the charging station is a 350kW one.

Now we get into charging curves. Today, no battery design / chemistry allows for high charging rates through most of the battery. In other words I cannot charge at 220kW in my R1T from 0-100%, it's just not possible.

I don't have a handy R1T charging graph, but if memory server me correctly I can hit 220kW up to the 50-65% SoC. (State of Charge) Charging would then reduce at certain SoC to ensure the battery is not being damaged by putting too much energy in it too quickly. By the time I hit 90% I would be down to around 50kW, again if memory servers me correctly. Your Bolt would drop to below 100kW at around 50% SoC. By 90% your bolt is somewhere around 20-50kW max charging speed.

If you are only getting 18 mi/hour you are not truly DCFC fast charging. Whether it is a DC or AC charging station you are really only getting 6-9kW of power delivered to your vehicle - depending on your EV. Here, the battery size and efficiency of your EV will determine what your miles per hour charging speed is, so it is best to talk in terms of kW delivered to ensure we are on the same page.

That adds perspective
We’ve been unplugging when the charge rate drops to 50 mph and hitting the road again.

 

[pc500]

Maybe the 250 is the max pack.

 

[azbill]

That's not true, GM uses 800V architecture in the Hummer EV and upcoming Silverado EV and they are switching to NACS. NACS supports up to 1000V, whether some, all or none of their stations support it today is a different discussion.

Only V4 will support it, and none of those exist yet in the US.

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