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Discussion Starter · #1 ·
I stopped to charge at a BP Pulse on Sunday - 150kW chargers but it only charged at something like 37kW. ealier in the day I used Ionity and again that only charged in the high 50s to 60s. Nowhere near the 110kW it should be capable of.
Anybody else experiencing this or do you get the full fast charge rate?
 

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Not got my car yet so cannot speak from experience but what was the state of the battery ie how full was it that can I beleive affect the charge rate. Ie the higher the existing rate the slower it can be and certainly over 80% charge it slows considerably. Also external temps make a diff did you prepare the battery for charge either manually or by choosing the charge point via the navigation? Finally I know that here in France at the village chargers of 22kw more than one car (they usually can do 2) the supply is split so max power is reduced as it is shared. I would not expect that from a DC fast charger but one cannot help but wonder if at a location with several chargers the supply is also shared a bit. excuse Me if I am stating the obvious will also be interested in any responses from experienced users.
 

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Discussion Starter · #3 ·
I was the only car on the chargers and each time I did select it through the satnav so should have been prepared to charge. Just wondering if it could be an issue with the onboard charger, the cable or maybe a firmware update required
 

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I was the only car on the chargers and each time I did select it through the satnav so should have been prepared to charge. Just wondering if it could be an issue with the onboard charger, the cable or maybe a firmware update required
What was the ambient temperature? It does seem low a question I have is whether the chargers themselves sometimes dish out less for reasons as yet not understood? Will research a bit on the french forums to see if this sort of issue has been raised.
 

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Discussion Starter · #6 ·
What was the ambient temperature? It does seem low a question I have is whether the chargers themselves sometimes dish out less for reasons as yet not understood? Will research a bit on the french forums to see if this sort of issue has been raised.
Sunday morning it was probably about 18 celsius and later on probably more like 15 and raining. I'll probably have to use another one this weekend so will note the temperature, charge rate etc.
 

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See if you can find the charging stations in question on plugshare, people often post what power they managed to get out of them. I've charged my EQC on two "identical" UltraRapid 350kW chargers. On one it peaked at 109kW and on the other just 80, weather conditions were pretty similar... ambient of about 22C. On the faster one I was sharing the station with a Hyundai Ioniq, on the slower one I had it all to myself. A quick check on the slower one at plugshare revealed a Tesla Model X poster saying "80kW Really not 350kW".

The good charger took the car from 30% to 90% in 39 mins, with an average charge rate of 80kW. Some data points along the way were:
598


Predicted range at the end was 353km, which extrapolates out to 392km at 100%.
 

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Not got my car yet so cannot speak from experience but what was the state of the battery ie how full was it that can I beleive affect the charge rate. Ie the higher the existing rate the slower it can be and certainly over 80% charge it slows considerably. Also external temps make a diff did you prepare the battery for charge either manually or by choosing the charge point via the navigation? Finally I know that here in France at the village chargers of 22kw more than one car (they usually can do 2) the supply is split so max power is reduced as it is shared. I would not expect that from a DC fast charger but one cannot help but wonder if at a location with several chargers the supply is also shared a bit. excuse Me if I am stating the obvious will also be interested in any responses from experienced users.
Hi - new owner here, how do you manually set the battery precondition? I’ve found some motorway charges seem to be a bit hit and miss on the Sat Nav so can’t always be preselected
 

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Hi - new owner here, how do you manually set the battery precondition? I’ve found some motorway charges seem to be a bit hit and miss on the Sat Nav so can’t always be preselected
There is a button on the centre console I think shows the car and an electric cable on the passenger side in a uk car. My understanding is this sets the car battery to prepare for charge.
 

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There is a button on the centre console I think shows the car and an electric cable on the passenger side in a uk car. My understanding is this sets the car battery to prepare for charge.
Just had a little play and unfortunately that button seems to simply be a shortcut to the EQ screen.
I can’t find anything online or in the electronic user manual about manually preconditioning the battery at all.
The heating icon on the EQ screen seems to be for setting pre entry temp / leave times etc.
Beginning to wonder if the battery preconditioning is a bit of a red herring / only functional if a charger is selected from EQ or Nav settings.
(Think I’ll have to get a dust cloth for the screen and shelf above the vents!🧐)
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Sorry to send you up a blind alley will have a look in my manual see if there is anything there and dig about on the french forums though EQC are like hens teeth here. I never saw one in Paris when there for 4 days at the begining of Dec but the place was full of e and s class limos🙄
 

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I guess it might simply be a design / UX choice to only engage the battery conditioning when a location is selected through the MBUX / MM app to prevent accidental selection and battery drain. Or alternatively engaging it too soon to the same effect. Would make sense I guess but when the Nav charging points aren’t quite keeping up with available services it feels a bit of an oversight.
There’s an amateur reviewer on YouTube called Kris Rifa whose done some interesting vids on cold charging etc, some of the comments suggest preconditioning only accessible when preplanning a stop.
 

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Damn!

My car is AMG version with 11 kW OBC and ~10 000 km on board.
I usually charge @home on type II.
I've tried to charge on ccs 60 kW and I've only got 22-23 kW

0C Temperature outside, 47% battery, after a 150 km trip :(

I'll try another Fast charger :(
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Hi, I have tried a couple of scenarios that seem to have an effect. If you select a charging station through the button on the dash, 'Search for Charg. Station' find your chosen station and then select it as a destination in the navigation, or the navigation directs you to a charging station as part of the route guidance then it seems the car knows it is due to be charged and starts to pre-condition the battery. I have been able to charge at 110kW on a battery from about 25%. When the battery capacity gets higher, say 70% the charging rate reduces. If I just drove to a charging station not though the navigation route guidance then the charging rate was much lower, even when starting at 25%.
Essentially, let the navigation system take you to the charging station for best charging rate.

A bit wordy, but hope it makes sense.
 

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Any idea what the purple line in that display is indicating?

Cerere 379.0V/84A,125.0A

All the other fields are pretty standard on the DC chargers I've used, but I've not seen that one before.
 
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