Maximum charging speed

Icyfraser

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Hi all. Couple of questions:
  • New Wall box at home that is apparently running at 7kw(ac chargin). Car only receives at 4.5kw
  • Using local rapid 50kw Dc charger, car receives at 47-48kw
  • Using super duper Ionity DC charger at Gretna Green running at 350Kw car only receives at 175kw
I thought my issue was ac or dc but now I'm confused??
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kreshi

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Charging has so many factors. Mainly your starting state of charge and battery temperature. If you want the super ionity numbers your battery needs to be under 20% SoC and 30 degrees Celsius and up.
 

W1NGE

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Hi all. Couple of questions:
  • New Wall box at home that is apparently running at 7kw(ac chargin). Car only receives at 4.5kw
  • Using local rapid 50kw Dc charger, car receives at 47-48kw
  • Using super duper Ionity DC charger at Gretna Green running at 350Kw car only receives at 175kw
I thought my issue was ac or dc but now I'm confused??
The max charge throughput you can expect at home on a single phase supply will be 7.4kW. To achieve this your charger must be on a dedicated 32A supply from your fuse box and you must use the correct cables. It sounds like you are on a 16A supply or a 16A cable.

Home charging can only be AC.

The 50kW throughput you got is good / what to expect (it will never be 50kW) and depending on conditions and battery state of charge you might see 49kW throughput.

350kW can only provide 270kW max again a lot is dependent on the conditions and the battery state of charge, temp etc and if you have the charger protection enabled in the PCM which will throttle back to 100kW (or thereabouts). 175kW might seem low (it isn't really) and your battery might be close to the threshold where the rate is reduced to protect the battery.

50kW and 150kW are DC chargers - both are 400V and so the voltage is increased to 800V by the onboard voltage converter to match the native voltage of the battery.

350kW chargers are DC and are 800V - so ultra fast ... no voltage conversion and no step-up.
 
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Alex74

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The max charge throughput you can expect at home on a single phase supply will be 7.4kW. To achieve this your charger must be on a dedicated 32A supply from your fuse box and you must use the correct cables. It sounds like you are on a 16A supply or a 16A cable.

Home charging can only be AC.

The 50kW throughput you got is good / what to expect (it will never be 50kW) and depending on conditions and battery state of charge you might see 49kW throughput.

350kW can only provide 270kW max again a lot is dependent on the conditions and the battery state of charge, temp etc and if you have the charger protection enabled in the PCM which will throttle back to 100kW (or thereabouts). 175kW might seem low (it isn't really) and your battery might be close to the threshold where the rate is reduced to protect the battery.

50kW and 150kW are DC chargers - both are 400V and so the voltage is increased to 800V by the onboard voltage converter to match the native voltage of the battery.

350kW chargers are DC and are 800V - so ultra fast ... no voltage conversion and no step-up.
You have a 120kw on 800 V, since a few months. Pending on battery and t° outside, you can charge very quickly on a 350 kw charger.
I’ve loaded a taycan 4s who has 5% left at 267 kw/ h.
with a small trick you can charge some types of taycan at 290 kw, if you put your foot on the brake during charging.
Porsche Taycan Maximum charging speed 6FED66E8-C015-4A76-89CE-8A2F5E91367D
Porsche Taycan Maximum charging speed 207C3DD0-96A1-42CE-8889-3446263A802D
Porsche Taycan Maximum charging speed 207C3DD0-96A1-42CE-8889-3446263A802D
Porsche Taycan Maximum charging speed 6FED66E8-C015-4A76-89CE-8A2F5E91367D
 


Rcrewse7

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You have a 120kw on 800 V, since a few months. Pending on battery and t° outside, you can charge very quickly on a 350 kw charger.
I’ve loaded a taycan 4s who has 5% left at 267 kw/ h.
with a small trick you can charge some types of taycan at 290 kw, if you put your foot on the brake during charging.
6FED66E8-C015-4A76-89CE-8A2F5E91367D.jpeg
207C3DD0-96A1-42CE-8889-3446263A802D.jpeg
207C3DD0-96A1-42CE-8889-3446263A802D.jpeg
6FED66E8-C015-4A76-89CE-8A2F5E91367D.jpeg
I’ve never heard of 290kw being possible at all…can you explain this brake trick?
 

psglas

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I'd get your home installation checked. I've used 3 different home chargers and always get 7kW plus all the way up to nearly fully charged. The cable thickness and length of the cable run affect it but 4.5kW is very low.

I get anything from 40-49kW on Chargeplace Scotland 50kW chargers so 47-48kW is good. I've only once got 49kW, last weekend on the new charger at the Arnold Clark Innovation Centre in Glasgow.

Ionity will be very dependant on the SoC and temperature when you plug in. 175kW is normal for me at Perth. I've only had 220-240kW+ when starting from 10-15%.
 
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Icyfraser

Icyfraser

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Charging has so many factors. Mainly your starting state of charge and battery temperature. If you want the super ionity numbers your battery needs to be under 20% SoC and 30 degrees Celsius and up.
Makes sense thanks. My battery was about 40% when I charged up
 


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Icyfraser

Icyfraser

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I'd get your home installation checked. I've used 3 different home chargers and always get 7kW plus all the way up to nearly fully charged. The cable thickness and length of the cable run affect it but 4.5kW is very low.

I get anything from 40-49kW on Chargeplace Scotland 50kW chargers so 47-48kW is good. I've only once got 49kW, last weekend on the new charger at the Arnold Clark Innovation Centre in Glasgow.

Ionity will be very dependant on the SoC and temperature when you plug in. 175kW is normal for me at Perth. I've only had 220-240kW+ when starting from 10-15%.
Thanks. I use chargeplace Scotland too and that sounds about right. The company that did the install for home charger say everything is set up correctly their end and it MUST be a car issue. Car is scheduled in for software check for this
 

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I'd plug in another EV to it and see what rate you get. And/Or charge the taycan on a chargeplace scotland 7kW AC charger.
 

Alex74

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I’ve never heard of 290kw being possible at all…can you explain this brake trick?
When the battery is between 5-20% you can put your foot on the brake and then you can charge up to 290kw. Not all models can, we are testing if it’s pending on certain options too.
 

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I’m going to have to try the “brake trick”. I’m preparing to take a trip from Raleigh NC to Chicago IL later this month. Since I will be entering some charging areas with <10% SoC and will need to charge upwards of 95+% for the next leg, I decided to perform a test at my local 350 kW EA Charger. I pulled in with 7% SoC and charged to 100%.
7% to 96% (~71.1 kW) took 42 minutes with an average pull of 101.4 kW for that duration.
The highest charge I saw was at around 22% SoC where it peaked at 166 kW (it may have went higher as I didn’t stare at the EA Charger the entire time)
I will note that I did see my highest battery temperature to date at 110 degrees Fahrenheit.
The last 4% (8.8 kW) took an additional 9 minutes (average pull of 58 kW) for a total of 51 minutes to go from 7% to 100%.
I have a base 2021 Taycan RWD with the 79.9 kWh standard battery.
Porsche Taycan Maximum charging speed 3E24F09A-58E4-4B86-BF14-7ED06FA326AD

Porsche Taycan Maximum charging speed E3C7C456-3F66-4746-92AE-2234BD2E4EA7

Porsche Taycan Maximum charging speed 170032DD-054B-4820-B441-59EBC0E3E53E

Porsche Taycan Maximum charging speed C86F0BB6-3F0F-475E-9E9E-117C30D01C64

Porsche Taycan Maximum charging speed 5A1D3A7F-6916-4656-A53C-903AD762CB0E

Porsche Taycan Maximum charging speed 087BC81F-C3C8-4F10-BF3D-4FD9AD6416F8
 

submatrix

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I’m going to have to try the “brake trick”. I’m preparing to take a trip from Raleigh NC to Chicago IL later this month. Since I will be entering some charging areas with <10% SoC and will need to charge upwards of 95+% for the next leg, I decided to perform a test at my local 350 kW EA Charger. I pulled in with 7% SoC and charged to 100%.
7% to 96% (~71.1 kW) took 42 minutes with an average pull of 101.4 kW for that duration.
The highest charge I saw was at around 22% SoC where it peaked at 166 kW (it may have went higher as I didn’t stare at the EA Charger the entire time)
I will note that I did see my highest battery temperature to date at 110 degrees Fahrenheit.
The last 4% (8.8 kW) took an additional 9 minutes (average pull of 58 kW) for a total of 51 minutes to go from 7% to 100%.
I have a base 2021 Taycan RWD with the 79.9 kWh standard battery.
3E24F09A-58E4-4B86-BF14-7ED06FA326AD.jpeg

E3C7C456-3F66-4746-92AE-2234BD2E4EA7.jpeg

170032DD-054B-4820-B441-59EBC0E3E53E.jpeg

C86F0BB6-3F0F-475E-9E9E-117C30D01C64.jpeg

5A1D3A7F-6916-4656-A53C-903AD762CB0E.png

087BC81F-C3C8-4F10-BF3D-4FD9AD6416F8.png
Peaking at 166 kW on a 350 kW charger when starting at 7% SoC seems bad, am I missing something?
 
 




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