I'm not able charge over 120kw at EA 350kw

audiojerry · Monday at 11:54 AM

I'm not a frequent Electrify America user, but I've charged my Touring using EA's 350kw chargers 5 times and have never been able to get more than 120kw. The first 4 times occurred during the winter when temps were 35 on average. Yesterday the temp was 73 and I plugged in at 46% and charged to 66%. I just wanted to see if I was still getting free charging - I am not.

Any ideas on what is limiting my charging rate?

Adnillien · Monday at 12:06 PM

120kW seems about right for 46% SOC. What was your SOC the other times that you charged at EA?

audiojerry · Monday at 12:13 PM

Adnillien said:
120kW seems about right for 46% SOC. What was your SOC the other times that you charged at EA?

I was stopping to charge at about 30%, charging up to 80% while traveling cross country.

120kw seems right? Why is it limiting to 120 on a 350 charger? Does the Touring model limit the rate, or is EA not allowing 350?

Halodde · Monday at 12:17 PM

audiojerry said:
I was stopping to charge at about 30%, charging up to 80% while traveling cross country.

120kw seems right? Why is it limiting to 120 on a 350 charger? Does the Touring model limit the rate, or is EA not allowing 350?

Either the car or the charger can limit the power delivery. Sometimes you will get a message on the car display if the station is limiting it. And sometimes you can see a message on the charger display telling you what power the car is requesting to compare it to the power being supplied. Classic he said/she said lol.

Were all of these charging sessions at the same charger? I'd recommend getting you SOC low, precondition fully (up to 45 min) and then plug into a different charger at a different station for a good comparison.

HC_79 · Monday at 12:26 PM

Keep in mind that EA's 350's operate on balanced power so if the location is full (like most EA locations are) good luck ever seeing anything near 350kW. I've literally been pulling a high speed to only have someone else come in to charge and the moment they start charging you see your charging speed just drop.

As mentioned above, you'll also only see extremely high speeds when the car SoC is extremely low.

Adnillien · Monday at 12:57 PM

Under ideal conditions, the Touring will peak a little above 250kW. This is limited by the current that the battery can take. Even at 73 degrees, pre-conditioning is needed to bring the battery up to the best temperature for fast charging.

bikeriderbryan · Monday at 1:09 PM

Here is a charge chart from State of Charge. Should give you an idea of the charge curve under ideal situations.

segbrk · Monday at 1:15 PM

bikeriderbryan said:
Here is a charge chart from State of Charge. Should give you an idea of the charge curve under ideal situations.

But note this is a DE, not a Touring. The Touring will start around 250 and drop to/below the red line at 175kW around 35%. Using a 150kW stand vs a 350kW doesn't make a whole lot of difference.

bikeriderbryan · Monday at 2:49 PM

segbrk said:
But note this is a DE, not a Touring. The Touring will start around 250 and drop to/below the red line at 175kW around 35%. Using a 150kW stand vs a 350kW doesn't make a whole lot of difference.

Correct. This is why I wrote it should give them an idea of the charge curve. It isn't exact.

audiojerry · Monday at 4:16 PM

I did forget to pre-condition. Also I was travelling cross-country, so it was always a different EA along the route from WI to AZ. On 2 occasions I was the only person charging. It was always below 120kw and always above 100 until the charge was getting closer to 80% when the charge rate would drop dramatically.

A related question: At times I hear a loud whirring sound while the car charges. I'm guessing
the noise is from the system cooling the battery?

segbrk · Monday at 4:17 PM

audiojerry said:
A related question: At times I hear a loud whirring sound while the car charges. I'm guessing
the noise is from the system cooling the battery?

Yup. There are big fans that vent through the front wheel wells, they'll come on and even stay on for a while after fast charging especially if it's hot out.

borski · Monday at 5:25 PM

audiojerry said:
I did forget to pre-condition. Also I was travelling cross-country, so it was always a different EA along the route from WI to AZ. On 2 occasions I was the only person charging. It was always below 120kw and always above 100 until the charge was getting closer to 80% when the charge rate would drop dramatically.

A related question: At times I hear a loud whirring sound while the car charges. I'm guessing
the noise is from the system cooling the battery?

Yeah that sounds like a really solid charging session if you were around 40ish percent in a Touring. That’s working as expected.

chris · Monday at 6:55 PM

The most I've seen so far (briefly of course) at an EA 350 charger was 233kW but that was starting out at 11% SOC and I wasn't even properly pre-conditioned at that point but it was an 80 degree day. I don't think I've ever seen more than 122kW max at 45% or 46% but I'd have to pay much closer attention next time I see 46% to know for sure.

Buffalo Bob · Monday at 7:06 PM

chris said:
The most I've seen so far (briefly of course) at an EA 350 charger was 233kW but that was starting out at 11% SOC and I wasn't even properly pre-conditioned at that point but it was an 80 degree day. I don't think I've ever seen more than 122kW max at 45% or 46% but I'd have to pay much closer attention next time I see 46% to know for sure.

I think we may have discussed this before, as I have the same car as you. On any day with reasonably normal temperatures, no matter what SOC I start at, it takes 30-35 minutes to get to 80%. Every time! The higher the initial SOC, the lower the initial kW and the sooner the curve kicks in. I can live quite happily with that, but I sure won't complain if it improved.

Dog poop · Monday at 10:18 PM

I have an AT and here is my 20 minute preconditioning speed. It’s possible to see higher if you are low enough and you preconditioning.

segbrk · Monday at 10:20 PM

Dog poop said:
View attachment 27737I have an AT and here is my 20 minute preconditioning speed. It’s possible to see higher if you are low enough and you preconditioning.

Yes, the highest I've snagged in a picture was 243kW at 13%. It started a bit over 250, but I was too slow with the camera.

Dog poop · Monday at 10:28 PM

segbrk said:
Yes, the highest I've snagged in a picture was 243kW at 13%. It started a bit over 250, but I was too slow with the camera.

I started around 240 but couldn’t snap fast enough. Here is 13%. It drops almost as fast as my accelerator at a light!

Also I started charging to 100% to see if that made a difference in speed. I had no intention of going all that way.

DeaneG · 2025-04-01T08:02:52-0500

Note that fully preconditioning the Air can take up to 45 minutes in cold weather.

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