Charging Curve Is.. Terrible

[4sallypat]

Tesla Supercharger experience:
80 degrees - using A2Z NACS adapter -

20% started at 112 kW
90% ended at 31 kW

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[thekat03]

Looks like an EVgo charger. What's the max rate for the charger? That might be the bottleneck, rather than the car, although starting DCFC at 55% SoC is higher than I typically do. That being said, I see faster charging rates in that percent SoC, but also have a California Route 1, and it appears you have a Select, so max charging speed is only 115 vs 150 kW.

 

[Adventureboy]

Tesla Supercharger experience:
80 degrees - using A2Z NACS adapter -

20% started at 112 kW
90% ended at 31 kW

This is normal for me too on a decent DCFC station.

 

[dbeth]

Check the amp output as well for that station. We have a charger near my house listed as a 180kW charger, but it is limited to 200A output. Thus, I can only max out in the 70'skW at any state of charge. I HATE when chargers only list kW output and hide their amp output.

 

[Garbone]

I'd really like a "precondition now" button on the car when I'm going to a DCFC but not navigating there.

Well, considering my wife "free" navigation has run out and I refuse to pay $80 a year to use the silly thing, precondition button would be the cats Pajamas.

 

[apwelsh]

Any idea what’s happening here? Trying to figure out if it’s the charger or the car. It happens consistently enough at this charging location but haven’t had a chance to test elsewhere. (I don’t often have opportunities to fast charge.) I suspect the latter, but really don’t want to give my car up to Ford for however long while they diagnose.

If I charge at a 300kW DCFC, and I am around 10-20% charge, I get 140kW or more. It every 10% of charge, the charge rate drops. By the time I am at 70%, the charge rate is around 60kW or so.

this is normal. As electrons are packed tighter inside the battery the heat generated by charging the battery grows, so the charge rate must be throttled to keep total heat production down. The coolant system can only help so much.

but ai also had a 150kW charger that would not give me more than 50/60kW. So now I only go to 300kW DCFC, as they seem to actually give me better charging rates. It shouldn’t matter.c but for me, so far, it seems to be the case.

 

[Gloff]

If I charge at a 300kW DCFC, and I am around 10-20% charge, I get 140kW or more. It every 10% of charge, the charge rate drops. By the time I am at 70%, the charge rate is around 60kW or so.

this is normal. As electrons are packed tighter inside the battery the heat generated by charging the battery grows, so the charge rate must be throttled to keep total heat production down. The coolant system can only help so much.

but ai also had a 150kW charger that would not give me more than 50/60kW. So now I only go to 300kW DCFC, as they seem to actually give me better charging rates. It shouldn’t matter.c but for me, so far, it seems to be the case.

Likely because some of those 150kw units are limited by the cable to 80kw at 400v. The advertised figure is at 800v.

I recommend watching the entire video, but here's the relevant information from Aging Wheels on youtube. Some of the information is outdated (like Teslas only at Tesla stations)

If you're at a location with 150kW and 300+ capability, check the cable on the 150 unit to make sure it's rated >300 amps, if it is, use that unit instead of the higher KW one.

 

[A-A-Ron]

Well, considering my wife "free" navigation has run out and I refuse to pay $80 a year to use the silly thing, precondition button would be the cats Pajamas.

Not to mention the majority of people that prefer to use CarPlay and AndroidAuto.

Outside of the bug where my car starts up trying to navigate to some random place and I have to go in and cancel navigation, I never bring up the Sync Nav screen.

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