HPC charging speed

[proudZSowner]

want to know if anyone got more than 50kWh on a HPC charger like Ionity, Fortrum

max we got was 402V with 125A / 50kWh for a very short time between 25 and 35%

 

[KasEV]

I believe the ZS EVs onboard charger is designed to limit Charging rate which also depends on temperature, and how depleted the battery is and type of charger/power etc. The highest rate of charge therefore varies greatly and is never sustained for a very long time.

 

[Mark Holmes]

I was told, can’t remember where that it had the potential to go up yo 75 kWh on charging.

 

[KasEV]

I would be surprised if it went that high. ? 50kWh may be max.
If it goes up to 75 then we would have had shorter 0 to 80% rapid charge times and not 40 mins.

 

[Mark Holmes]

I’m sure I was told it could go up to that, or I read it somewhere, but at the time most rapid chargers or the majority only went to 50 kWh apart from Tesla..but now they are getting faster and faster. That’s said I could be wrong...

 

[Mark Holmes]

I would be surprised if it went that high. ? 50kWh may be max.
If it goes up to 75 then we would have had shorter 0 to 80% rapid charge times and not 40 mins.

Please watch the following

Regards

 

[proudZSowner]

I believe, I think, I guess - don't want to read speculation - every day experience would be great.

 

[KasEV]

Thanks Guys,
Your comments noted.
So I stand corrected. OK the charge rate can go above 75 for a few seconds, minutes even.
What matters is the average charge rate as this determines how long it takes an EV to charge. The average charge rate for ZS EV from 0% to 80% is not above 55kWh and that is why it takes 40 mins to charge.
The onboard charger in the ZS EV is indeed designed to limit Charging rate to prevent battery burn out. Depending on whether a DC or AC current is being used for charging and a few other factors it operates to limit current or voltage. That's just basic electronics. People show episodes of charge rate spiking to very high rates. Yes.
That does not change the basic electronics. The limiting systems of the onboard charger will kick in as and when needed. So in the end the average rate will be within a specified range which for ZS EV is not above 55 kWh. No matter what charger you use for the ZS EV and no matter how high the charge rate goes episodically one will never be able to charge it from 0-80% quicker than
35 - 40mins.

 

[Mark Holmes]

Thanks Guys,
Your comments noted.
So I stand corrected. OK the charge rate can go above 75 for a few seconds, minutes even.
What matters is the average charge rate as this determines how long it takes an EV to charge. The average charge rate for ZS EV from 0% to 80% is not above 55kWh and that is why it takes 40 mins to charge.
The onboard charger in the ZS EV is indeed designed to limit Charging rate to prevent battery burn out. Depending on whether a DC or AC current is being used for charging and a few other factors it operates to limit current or voltage. That's just basic electronics. People show episodes of charge rate spiking to very high rates. Yes.
That does not change the basic electronics. The limiting systems of the onboard charger will kick in as and when needed. So in the end the average rate will be within a specified range which for ZS EV is not above 55 kWh. No matter what charger you use for the ZS EV and no matter how high the charge rate goes episodically one will never be able to charge it from 0-80% quicker than
35 - 40mins.

Agreed, the interesting point from my perspective is that yes some car can go further between charges, that said if on the road or doing a road trip it’s pretty much pointless as when you have to stop you have to stop for longer.. so two shorter stops or one long stop still means down time in anyone’s calculations.

 

[KasEV]

@Mark Holmes
Definately for me one longer stop better for journey plans and the battery.
The less episodes of rapid charging the battery is subjected to the better.

 

[Mark Holmes]

I would rather more stops, one every 2 to 2.5 hours with a 30-40 minute stop rather than drive for 3 to 4 hours and stop for 60 - 80 minutes, option 1 is better suited to health and safety with more frequent breaks too.

 

[KasEV]

@Mark Holmes,
I see. More frequent Stops safer and OK if time allows and journeys are very long.
The frequency of stops you describe is standard for ZS EV.
What determines frequency of stops to charge is the limit of battery capacity of the ZS EV and range to empty.
For example 60 miles per hour on motorway and drive in normal mode for 2 to 2.5 hours
and then one will have range of about 10 to 15 miles (max 20miles ) left. So one has to stop anyway every 2 to 2.5 hours no matter what. I am doubtful one can do motorway speeds for more than 3hours non stop to charge with a ZS EV.

The "high charge load" rapid charging advocates do a rather funny regime of a 10 to 20 min charge very 30 to 60 miles. It means after cumulative period of 1 hour of Charging they will have travelled at least 180miles.
If one uses the standard stop regime for the same period one would have travelled a maximum of 120miles.
So that is what the buzz is for them.

 

[Mark Holmes]

@Mark Holmes,
I see. More frequent Stops safer and OK if time allows and journeys are very long.
The frequency of stops you describe is standard for ZS EV.
What determines frequency of stops to charge is the limit of battery capacity of the ZS EV and range to empty.
For example 60 miles per hour on motorway and drive in normal mode for 2 to 2.5 hours
and then one will have range of about 10 to 15 miles (max 20miles ) left. So one has to stop anyway every 2 to 2.5 hours no matter what. I am doubtful one can do motorway speeds for more than 3hours non stop to charge with a ZS EV.

The "high charge load" rapid charging advocates do a rather funny regime of a 10 to 20 min charge very 30 to 60 miles. It means after cumulative period of 1 hour of Charging they will have travelled at least 180miles.
If one uses the standard stop regime for the same period one would have travelled a maximum of 120miles.
So that is what the buzz is for them.

Sorry you’ve lost me a little bit with your response?!

 

[KasEV]

@Mark Holmes
Well how do I explain. OK
In a warm ZS EV battery on Charge on a HPC
the charge rate may go above 75 kWh for about 10min between 10% to 55% battery capacity.
This charge rate is above the 55kWh ZS EV average and gives a rapid accumulation of charge and range of 60 to 80miles very quickly.
So if one charges for 10 min within such conditions then drives for 60 miles then repeats this same process, one would spend only 20 to 30mins charging for every 180 to 200 miles of travel.
This means one travels further and spends less time Charging compared to the standard Charging regime you use which gives 120 to 140 miles for every 40 to 60 mins of charging.

 

[proudZSowner]

In a warm ZS EV battery on Charge on a HPC
the charge rate may go above 75 kWh for about 10min between 10% to 55% battery capacity.

no, unfortunately this doesn't happen, at least not ours - I load the MG to 90% with AC.
Off the highway, 100km to the HPC, so always firmly on the power pedal, at the HPC only 2% battery!
Battery definitely warm, outside temperature above 23 degrees Celsius - maximum charging speed ~ 48kWh!

 

[KasEV]

Yes. I know that does not usually happen. I use the standard Charging regime ie 40min Charging for every 120 miles.
But all over the net and You Tube etc you have a few people claiming they are able to fast charge their ZS EV at rates upto 90kWh and gain a better mileage to charge time ratio by doing shorter charges. They often film themselves rates of far above the average 55kWh stipulated by MG. So what is pushing the buzz about ZS EV being able to charge at rates of upto 90kWh?
What do you think the gain is for those pushing the claim that ZS EV charges at rates upto 90 kWh?

 

[KasEV]

@proudZSowner
Please watch the links You Tube @Mark Holmes sent on Tuesday at 1:49 pm.
You will find one such advocate of high charge rates on HPCs