For every kW you would get about 7.5km/hour.
Example;
3,6kW 27km/hour
7kw 52,5km/hour
50kw 6,25km/minute

 

I am not sure in UK whether you can load a circuit at 100% continuously. In Canada you are supposed to keep the load at 80%. Assuming you can keep the load at 13A (240V nominal) will give you 3.1kW (13 x 240). It is going to take you at tad over 9 hours (28 / 3.1) to charge the battery from zero to 100% which in turn give you 200km range. For each hour it is going to top up around 22km (200 / 9) per hour.

If you can't load the circuit at 100% then you need to factor that in the load factor, instead of 13A to 10.4A for example at 80%. In turn you will get 2.5kW of energy per hour. It is going to take you 11.2 hours to fully charge the drive battery which translate to 17.8km per hour.

You can get a rough estimate using this formula:

Top up range in km per hour = 200 / (28 / (energy input)) where: 200 is the range of the vehicle in km, 28 is the vehicle drive battery capacity in kW

Energy input in kW = (Amp x Volt x Load factor)/1000 where load factor is the maximum sustained load capacity percent

 

EH chargers may not give 50kW but more like 34kW so these rapid chargers will not be quite so rapid.

 

More realisticly it might look more like this.
I havent doubblechecked the numbers but its close.
From a consumtion of 1,3kW pr km...

* 230V*9A = 2kW\1,3= 15km pr hour (Shuko at home)
* 230*30A = 7kW\1,3= 53km pr hour (Type2 AC Home/Public)
* CCS warm battery 45kW\1,3 =340km pr hour / 5,6 km pr minutt (CCS)
* CCS cold battery 35kW\ 1,3 = 270km pr hour / 4,5km pr minutt (CCS)

30minutts with Shuko (2kW) = 8 km (+4%)
30minutts with Type 2 (7kW) = 26 km (+13%)
30minutts with CCS (45kW) = 170 km (+85%)

 

Thank you all for your help and calculations.

I'm still amazed nobody has seen a quick guide chart.

Maybe I will put one together


I believe 10a is the usual charge rate in the UK via the granny lead.

 

Charts

For those of us who use KM and live in the colder parts of the world. (13kW/100km)
And use Shuko plug.
Made for myself with Norwegian spec. (9A max on granny)

I cant guarantee the accuracy of them, but its what my "mathskills" gave me in theoretical range.

 

Made for myself with Norwegian spec. (9A max on granny)

Did you measure it? That's what my printed manual also says. My printed manual says 9A for High, 6A for Medium and 8A for Low, which doesn't make any sense.

If you look for manuals on the internet, you find english and german versions saying 12A-9A-6A. That's what must be right. Because I measure it in my meter, and it says 11,3-11,6A (that's 12 with a safety margin).

 

In Portugal, and I guess continental western Europe, where mains already moved from 220V to 230V (supposedly for harmonization with the 240V in the UK, which in turn never moved), the ICCB charges at up to 12A (it stays at around 11,5A, according to my energy meter).

That would give over 2,5kW using the ICCB. One problem with the measurement, is that you don't know how much of the energy goes to powering the charger itself and how much goes into the battery. However, I'm pretty sure it is well above the stated 2,3kW.

Anyway, for quick figures you don't need a chart. Just take advantage of the correspondence 100% - 200km, each % is 2km.

• At 2,3kW it's about 8%/hour or 2% in 15'. That's 16km/h or 4km in 15'.
• At a 7,4kW charging point, it charges at about 6,4kW. We can round it up to 24% or 48km per hour and 12km in 15'.
• At a 50kW CCS charger, it's 3% or 6km per minute. At motorway speeds, better make think 5km per minute or so.

All round numbers, no chart needed.

And by the way, around here it charges pretty accurately at 49-50kW on 50kW CCS chargers. The problems we have here is that fast chargers can usually only charge one car at once in DC. It's just that the charging speed drops abruptly after 80% SoC.

If you are going to make a chart, you could make 100% correspond to the interval 160 to 240km, depending on how fast you go. And then, it would be, more accurately:

• At 2,5kW, 14 to 21km per hour.
• At 6,4kW. 36 to 55km per hour.
• At 50kW, 285 to 428km per hour or 5 to 7km per minute.

Given all uncertain factors, accurate figures don't beat a quick mental calculation, which you can then adjust as you see fit.

Finally, the car always seems to overestimate the charging time, doesn't it?

 

In Portugal, and I guess continental western Europe, where mains already moved from 220V to 230V (supposedly for harmonization with the 240V in the UK, which in turn never moved),

Not entirely true for UK

http://www.twothirtyvolts.org.uk/pdfs/site-info/Explanation_230Volts.pdf

 

In the US, 25 miles/hr. range added charging at 240V.