Type-2 charging with 10.1 kW max, is this normal?

[pio]

My 2020 Taycan 4S should be able to charge at home with 11 kW. My home connection is 3x25A and my charging station is telling the car "you can charge with 19 amps", which is more than the 16A which the car can handle. The result is, I see between 15.1A and 15.6A being delivered on each phase to the car, and in the car's display it shows 10.1 kW. Never more than that, not even for a second. Even in ideal circumstances (temp, SOC), it never goes above 10.1 kW on the car's display.

I tried someone else's charger and same result, 10.1 kW max charging speed. I checked the cabling to the charging station, it's 7 meters of 6 mm^2 (5-wire), which should be adequate even for 3x32 A (which would be beyond my house connection limit). The voltage drop is below 1V, for example it shows 231 V at the start of the cable in the house, and 231 V at the station without load, and wiggles between 230 and 231 V on my multmeter under max load. I am measuring the actual cable connections of the final cable going from the charging box to the car.

I am happy to accept that there are losses and imperfections, but I'd expect closer to 10.8 kW or 10.9 kW charging performance in real life. Is my expectation wrong? Or do I need to do more debugging of this car / setup?

PS - on the attached image you can see "9.1 kW" this is what the EVSE shows while the car will show "10.1 kW" on the interior display. You can also see it is offering 19A.

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[Midlifecrisis]

So you are using 46.3A at 231V = 10.6953kW. Car says 10.1kW which is about 94.4% efficiency or just over 5% loss. That is about right for AC charging. Presumably the car “thinks” it can only pull this much from the charger for whatever reason. I would just accept it if I were you as any extra that you can eek out of it won’t really make any difference to you

 

[W1NGE]

My 2020 Taycan 4S should be able to charge at home with 11 kW. My home connection is 3x25A and my charging station is telling the car "you can charge with 19 amps", which is more than the 16A which the car can handle. The result is, I see between 15.1A and 15.6A being delivered on each phase to the car, and in the car's display it shows 10.1 kW. Never more than that, not even for a second. Even in ideal circumstances (temp, SOC), it never goes above 10.1 kW on the car's display.

I tried someone else's charger and same result, 10.1 kW max charging speed. I checked the cabling to the charging station, it's 7 meters of 6 mm^2 (5-wire), which should be adequate even for 3x32 A (which would be beyond my house connection limit). The voltage drop is below 1V, for example it shows 231 V at the start of the cable in the house, and 231 V at the station without load, and wiggles between 230 and 231 V on my multmeter under max load. I am measuring the actual cable connections of the final cable going from the charging box to the car.

I am happy to accept that there are losses and imperfections, but I'd expect closer to 10.8 kW or 10.9 kW charging performance in real life. Is my expectation wrong? Or do I need to do more debugging of this car / setup?

PS - on the attached image you can see "9.1 kW" this is what the EVSE shows while the car will show "10.1 kW" on the interior display. You can also see it is offering 19A.

I think this is 'on the money' and I don't think you'll get closer to the 11kW.

Try a public 22kW or 11kW AC charger to see if that gets closer to 11kW - if so then could be cabling or some communication difference with the EVSEs.

 

[AndiL]

Please also keep in mind that the electronics in the car (OBC, Battery Management, AC to DC converter) also need energy, which can easily be >700W. So what you are seeing is normal.

 

[daveo4EV]

So you are using 46.3A at 231V = 10.6953kW. Car says 10.1kW which is about 94.4% efficiency or just over 5% loss. That is about right for AC charging. Presumably the car “thinks” it can only pull this much from the charger for whatever reason. I would just accept it if I were you as any extra that you can eek out of it won’t really make any difference to you

the value you see inside the vehicle is the amount of power "hitting" the battery _AFTER_ charging over head losses - if you're getting 10.1 @ the battery - then there is more power "raw" being pulled from the mains - the values you are seeing are inline with expectations for a "raw" power feed of 11'ish kW

in North America my Taycan receives a "raw" power feed of about 9.6 kW - but the in vehicle value shows on the lower center screen as about 8.86 kW - this is is expected to do losses in the charging porcess (AC to DC conversion losses, heat, running other components, etc).

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