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Not sure about home charging speed?

KMWNAZ

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So I have a 220v line in my garage and I'm charging my R1S Dual Motor on it. It's set to start charging at midnight and it says it added 195 miles added (to 80%) in 5hr. 8min. 67kWh. so that means it should have been done at 5:08 this a.m. but when I checked at 9:00 a.m. it was still going? Weird or am I bonkers?
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67kwh of charge is possibly in just under six hours - if you’re charging at 11.25+\- kW aka 48 amp on that 240. If you truly at 220 then you won’t be able to push more than ~10.5 kW.


you don’t say what your EVSE is actually out-putting though - let us know that

What said it was still charging - the EVSE or the Rivian?
 

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a 220v line doesn't really provide us as much useful information nor does miles charged as the circuit and the amps you're charging at. Best practice for safety is to only charge at 80% of the rated amps for your given circuit. For example, I'm currently charging on a 50amp circuit which is set to 40 amps or about 9 kWh per hour. Likewise you could be on a 30 amp circuit and only be charging at 24amps or about 5-6 kWh/hour. Once you know the kWh/hour, then it's simple math to be able to determine if you're charging as you should.

Miles charging per hour is hard for each person to quantify online as there's likely 6+ miles per hour of charging as battery size, motor config, and tires on each vehicle determine the miles. For example, my current charging says 19 miles/hour with a Quad and AT 20a wearing Pirelli OEM tires. Your miles per charge will likely be different.
 
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KMWNAZ

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67kwh of charge is possibly in just under six hours - if you’re charging at 11.25+\- kW aka 48 amp on that 240. If you truly at 220 then you won’t be able to push more than ~10.5 kW.


you don’t say what your EVSE is actually out-putting though - let us know that

What said it was still charging - the EVSE or the Rivian?
Kind of new to this. Where would I get that info?
 

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So I have a 220v line in my garage and I'm charging my R1S Dual Motor on it. It's set to start charging at midnight and it says it added 195 miles added (to 80%) in 5hr. 8min. 67kWh. so that means it should have been done at 5:08 this a.m. but when I checked at 9:00 a.m. it was still going? Weird or am I bonkers?
I don't know what this means.

You can start by telling us about your charger. Something like "Rivian Wall Charger, hardwired to a 60 amp breaker" - without this information, we can't tell you what to expect in terms of charge rate.

Your charge rate will show on the screen in your Rivian and in your app when you're charging. Don't tell us miles/hour - that is not really useful. Tell us the rate in kW. If the screen behind the steering wheel shows miles/hour, go to the Energy screen on the center display and toggle the setting to show kW instead of miles/hour.

"it was still going" - what does that mean? Is it charging past 80%, is it still below 80%? Is 80% the limit you set in the app or in the car on on your charger? Where do you see the information that says the car is still charging?

67kWh in 5 hr 8 min is too much. Rivans only charge at 11.5kW max (Level 2), so in 5 hr 8 min you can't get more than ~60kWh from Level 2 charging.
 

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KMWNAZ

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I don't know what this means.

You can start by telling us about your charger. Something like "Rivian Wall Charger, hardwired to a 60 amp breaker" - without this information, we can't tell you what to expect in terms of charge rate.

Your charge rate will show on the screen in your Rivian and in your app when you're charging. Don't tell us miles/hour - that is not really useful. Tell us the rate in kW. If the screen behind the steering wheel shows miles/hour, go to the Energy screen on the center display and toggle the setting to show kW instead of miles/hour.

"it was still going" - what does that mean? Is it charging past 80%, is it still below 80%? Is 80% the limit you set in the app or in the car on on your charger? Where do you see the information that says the car is still charging?

67kWh in 5 hr 8 min is too much. Rivans only charge at 11.5kW max (Level 2), so in 5 hr 8 min you can't get more than ~60kWh from Level 2 charging.
Apologies for not having an intelligent question. Like I said I am new to this. Don't know much about electricity or EV vehicles.

- I am charging using the Rivian charging cable connected on the wall to a Nema 14-50 receptacle. (so it says on the electrician's invoice)
- Connected in the Circuit Box to (2) 50amp breakers. Voltage Output ??? Guessed at 220. I have no way of knowing.
- The numbers and times I quoted were from the iPhone App charging detail. If its wrong (which apparently it is) apologies.
- Using the Power Info in the car it shows much different information than the app. Ergo when the app said it was complete and I said it was still charging that's what I meant
Rivian R1T R1S Not sure about home charging speed? IMG_0343.JPG

So I guess the charge I received in 9hrs and 9mins to 80% capacity is correct.

T
 
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You can look at a detailed charging history from last session on the app
Rivian R1T R1S Not sure about home charging speed? IMG_3139
 
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KMWNAZ

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This is what the app screen shows which is different than what the car shows.
Rivian R1T R1S Not sure about home charging speed? IMG_0347.PNG
 
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The way that Rivian displays charging time is usually wrong. It will display how long it's been plugged in vs. the actual total charging time. My guess is your truck got to 80% in 5 or 6 hours and then it topped off again around 9am. Therefore Rivian shows that it charged for 9 hours when in reality it's probably closer to 6.
 

majorfriend

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I think the truck is right in this case, you are just using the charger that came with the truck correct?

If so max charging speed of that charger is 32 Amps, or about 7.6 kW/hr. The truck says it took on 66.5kW in just over 9 hours which is about 7.4kW/hr. Take into account some losses and that seems to line up.

I'm guessing you started charging around 30% and then charged up to 80%, if so 9 hours on a 32amp charger seems about right.

I've had occasional times where the truck loses connectivity (I think my garage door blocks the cell signal somewhat), and that makes the app think my truck stopped charging, but it didn't.

If you're looking for faster charging you could get a standalone EVSE, with a 50 amp breaker you can go to 40 amps of charging, or about 9.6kW/hr. At that rate this same charge would have taken about 7 hours. That's the fastest you can do on a NEMA 14-50.

There are many chargers out there, but I really like my Grizzle (Amazon link). This has the added benefit of letting you take the mobile charger with you everywhere in case you ever need to plug in, but don't have a charger you can get to.

Hope all that helps!
 

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Apologies for not having an intelligent question. Like I said I am new to this. Don't know much about electricity or EV vehicles.

- I am charging using the Rivian charging cable connected on the wall to a Nema 14-50 receptacle. (so it says on the electrician's invoice)
- Connected in the Circuit Box to (2) 50amp breakers. Voltage Output ??? Guessed at 220. I have no way of knowing.
- The numbers and times I quoted were from the iPhone App charging detail. If its wrong (which apparently it is) apologies.
- Using the Power Info in the car it shows much different information than the app. Ergo when the app said it was complete and I said it was still charging that's what I meant
IMG_0343.JPG

So I guess the charge I received in 9hrs and 9mins to 80% capacity is correct.

T
That indicates you might have charged at 32amps. With your Nema 14-50 and Rivian mobile charger, you should be able to get 40Amps top (equals to 9.6kW), so that same charging session (66.5kw) should've have taken roughly 7hrs.

From the menu where you took that screenshot, check the BOTTOM RIGHT option when your charger is connected, and see if you can up the AMPS to 40A.
 
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KMWNAZ

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I think the truck is right in this case, you are just using the charger that came with the truck correct?

If so max charging speed of that charger is 32 Amps, or about 7.6 kW/hr. The truck says it took on 66.5kW in just over 9 hours which is about 7.4kW/hr. Take into account some losses and that seems to line up.

I'm guessing you started charging around 30% and then charged up to 80%, if so 9 hours on a 32amp charger seems about right.

I've had occasional times where the truck loses connectivity (I think my garage door blocks the cell signal somewhat), and that makes the app think my truck stopped charging, but it didn't.

If you're looking for faster charging you could get a standalone EVSE, with a 50 amp breaker you can go to 40 amps of charging, or about 9.6kW/hr. At that rate this same charge would have taken about 7 hours. That's the fastest you can do on a NEMA 14-50.

There are many chargers out there, but I really like my Grizzle (Amazon link). This has the added benefit of letting you take the mobile charger with you everywhere in case you ever need to plug in, but don't have a charger you can get to.

Hope all that helps!
Thanks for the help.
 
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Sounds like you are using the mobile connector, which is limited to 32A.
 
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majorfriend

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That indicates you might have charged at 32amps. With your Nema 14-50 and Rivian mobile charger, you should be able to get 40Amps top (equals to 9.6kW), so that same charging session (66.5kw) should've have taken roughly 7hrs.

From the menu where you took that screenshot, check the BOTTOM RIGHT option when your charger is connected, and see if you can up the AMPS to 40A.
I think the mobile charger only goes to 32Amps
Rivian R1T R1S Not sure about home charging speed? 1731081838497-bv
 
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iamnid

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The way that Rivian displays charging time is usually wrong. It will display how long it's been plugged in vs. the actual total charging time. My guess is your truck got to 80% in 5 or 6 hours and then it topped off again around 9am. Therefore Rivian shows that it charged for 9 hours when in reality it's probably closer to 6.
Exactly! I noticed this in my first few days of ownership. I plugged it in about 2% below full and went to bed. The app told me "30 miles added in 9 hours" or something like that. It counts the entire time plugged in vs. the time it took to actually charge it which was about 15 minutes.
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