Rapid charging only 22kW on Mk2 MG ZS EV SR

On my mk1, it takes about a half hour to charge from say 10 miles to 165 miles which equates to about 40kWh, so that must be more that 22kW. How long does it take on the granny, which is only 3kW?

I typically get around 2kW, so 8 hours overnight gets me about 16kWh, c. 55 miles, which is my typical weekly mileage. Which is why I'm happy with the granny charger for now. It's the 2 of 3 trips a year where I need to use public chargers is the problem.

Is yours a long range mk2? If so, it could be the charging profile is different from my mk1? Also trying to start a charge on DC at 70% could be the reason for a low charge rate as this starts to fall as it gets near 80%.

No, it's a standard range (SR). I considered the 70% a factor, but reading loads of threads about rapid charging, I see no mention of it charging at such a low number before getting into the 80's, which is why I have asked in a new thread.

Have you tried charging from under 50% on a Rapid?
Starting from 20-30% will get the peak rate

Fastned state their chargers deliver optimum output when the temperature of the battery is around 30 degrees C.

If it was 11 degrees and you had only driven 10 miles, then the battery may not have been at the optimal temperature.

Cold battery.

elkay62 said:

No, it's a standard range (SR). I considered the 70% a factor, but reading loads of threads about rapid charging, I see no mention of it charging at such a low number before getting into the 80's, which is why I have asked in a new thread.

Click to expand...

for fast chargers what they really recommend is to charge from when you are down to about 25% to charge up to 80% and drive off as after that takes much much longer to top up further... so your 70% definitely played a role to slow down the charge

I didn't expect the factors mentioned (low temp, highish starting point) would make so much of a difference, But I'll find out tomorrow, and let let you know the result

Couple of things.
70% SoC will lower the over all state of charge

Battery temperature. Ensure you turn on battery heating prior to attempting rapid charge.
Our Tesla MY preconditions the battery at least 10 mins before it gets near super charger.

Colder battery lower is the rate of charge

hermitdave said:

Couple of things.
70% SoC will lower the over all state of charge

Battery temperature. Ensure you turn on battery heating prior to attempting rapid charge.
Our Tesla MY preconditions the battery at least 10 mins before it gets near super charger.

Colder battery lower is the rate of charge

Click to expand...

Once in my Tesla i had to do a 100 mile trip to a SuC, the car started with the battery at negative 11 celcius and the destination was set for the supercharger.

Travel time was about 1½ hours.

The "Preheating battery for fast charging" message popped up as soon as i put it in drive in the driveway and the car was runing the heating for the entire 1½ hour drive to the SuC.

Takes a lot of time to heat 500 kg of batteries from -11 and up to about +40

hmadsen said:

Once in my Tesla i had to do a 100 mile trip to a SuC, the car started with the battery at negative 11 celcius and the destination was set for the supercharger.

Travel time was about 1½ hours.

The "Preheating battery for fast charging" message popped up as soon as i put it in drive in the driveway and the car was runing the heating for the entire 1½ hour drive to the SuC.

Takes a lot of time to heat 500 kg of batteries from -11 and up to about +40

Click to expand...

Good point. I have only super charged a handful of times but you are right from my recollection I had been driving an hour and it still popped th preheating on.

hermitdave said:

Good point. I have only super charged a handful of times but you are right from my recollection I had been driving an hour and it still popped th preheating on.

Click to expand...

I have tried a few times where my car was not charged up for a longer trip and suddenly work called and asked me to do this longer trip so had to do a charge session pretty quickly after leaving so not had time to heat the battery.

It really DOES impact the charge speed, once i elected to go to the Tesla charger that is 5 miles from where i live, but it was so painfully slow i elected to only charge until i would arrive at another SuC about 60 miles further away, but with a bit of headroom to allow for heating.

This saved me a lot of time because i arrived at the next SuC with a battery that was a lot warmer so it took 250KW for the first 20% until it started tapering down....First SuC was about 30KW and i bet a lot of it went into heating the battery.

I have even tried plugging in my own charger at home, just to have it say "Heating battery to accept charge" and it was plugged in to my charger at home for atleast 20 minutes before it started putting power into the battery, the first 20 minutes it was using all the electricity the "charger" was supplying to run the battery heater....Again sub zero temperatures outside.