Latest charging curve?

[Aag12]

Can anyone share their dcfc charging curve post the latest update? Trying to see when it starts to taper hard.

Going on a road trip soon!

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[SeaGeo]

It starts tapering at about 40%. I'd leave a station at about 60 or 70% personally.

 

[Electrified Outdoors]

Been on one road trip so far. I have noticed it tapers down to about 100kw at ,60% and then at 80% it drops down again almost in half. This is approximate.

If you have home charging then I would use ABRP as it will tell you exactly when to leave the charger. Assuming the charger is not limiting power output it makes sense to charge up to 80% if needed. Anything above 80% is pretty slow. Only time I would go above that is if I couldn't make it to the next charger.

 

[Aag12]

Been on one road trip so far. I have noticed it tapers down to about 100kw at ,60% and then at 80% it drops down again almost in half. This is approximate.

If you have home charging then I would use ABRP as it will tell you exactly when to leave the charger. Assuming the charger is not limiting power output it makes sense to charge up to 80% if needed. Anything above 80% is pretty slow. Only time I would go above that is if I couldn't make it to the next charger.

Thanks. Have you seen any improvement with the latest update? Last time is dcfc was 4 months ago and I had the dreaded 'battery cooling' message that slowed my dcfc speeds

 

[zefram47]

https://www.rivianforums.com/forum/threads/new-charging-curve-example-2023-10-02.14592/

 

[Electrified Outdoors]

Thanks. Have you seen any improvement with the latest update? Last time is dcfc was 4 months ago and I had the dreaded 'battery cooling' message that slowed my dcfc speeds

I am on latest update. I didn't get any battery cooling messages or anything like that and it was pretty warm 90+ F. After the first two charges I used ABRP and manually routed to the next charge to keep the car from preconditioning. I felt like I was able to get better charging speeds when I didn't precondition the battery. Speeds ramped up fairly quickly and were constant until about 60% SOC at which time they dramatically decreased so it was clearly SOC and not thermal. same with the 80% drop off. The limiting factor were the chargers. The station only putting out 29kw had a message on all the chargers saying the charging was limited "to improve performance and for an update".

 

[MoreTrout]

Mine won't hold anything over 200kW for more than 30-60 seconds at most, then does the yo-yo from 200s to 140-150s and back until it starts the programmed taper around 60%. It actually starts a little before 60%, but I swear it used to start that taper in the low 50s, so maybe they let it go a few more %. I have charged on EA 150kW units that actually put out 175, and it will hold that consistently without the yo-yo. I just wish they would find the max it can handle without the yo-yo thermal throttling somewhere between 175 and 215 and let it only ask for that.

 

[duessell]

Mine won't hold anything over 200kW for more than 30-60 seconds at most, then does the yo-yo from 200s to 140-150s and back until it starts the programmed taper around 60%. It actually starts a little before 60%, but I swear it used to start that taper in the low 50s, so maybe they let it go a few more %. I have charged on EA 150kW units that actually put out 175, and it will hold that consistently without the yo-yo. I just wish they would find the max it can handle without the yo-yo thermal throttling somewhere between 175 and 215 and let it only ask for that.

That could be the charger rather than the vehicle.

 

[duessell]

This is weird. This is on my home JuiceBox that I have limited to 34 amp at 240 volts... So about 8 kW.

The chart in the Rivian app showed a spike to 43 kW at the start of the charge session.

 

[Dark-Fx]

This is weird. This is on my home JuiceBox that I have limited to 34 amp at 240 volts... So about 8 kW.

The chart in the Rivian app showed a spike to 43 kW at the start of the charge session.

Common glitch

 

[duessell]

Common glitch

Yeah, likely a math error in Rivian app. My JuiceBox didn't show the same thing.

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