chargers away from home

[judithhogg]

Hello I’m new to Evs. Why am I only getting 39kW when at a 175kW charger. Same at the next one too?

 

[Jomarkh]

Is this a mk1 ZS?
You won't get the full 175kW as the car can't take that much i thought it would be over 50kW though.

 

[sgt4hed]

it could be that the charger is cold, give it a few minutes and it should speed up, the batteries in your car may be cold, again, give it time to warm up. max charge rate for a Mk2 is only something silly like 75kW (might be 90, I can't remember which) and that is usually only up until you reach about 80% SOC where it drastically dials back the power so you don't blow up your batteries.

In short, there are many reasons why a charger might not be giving your car the max rate it can take, obviously don't rule out charger fault and load balancing if they have multiple outlets and multiple vehicles charging at once.

 

[Deleted member 9196]

Hello I’m new to Evs. Why am I only getting 39kW when at a 175kW charger. Same at the next one too?

Because temperature.

 

[N2STY]

Hello I’m new to Evs. Why am I only getting 39kW when at a 175kW charger. Same at the next one too?

Did you use battery heater?

 

[apzs]

I've been noticing past few days that my MG ZS LR has been charging very slow. I have had the battery heater on. Brought it at a low state of charge and only hitting 57 or 58KW. Its becoming a bit annoying. The Kona I had before regardless of temperature would rocket up to peak charging as soon as I would connect it at low state of charge. Its getting frustrating as I rely solely on public charging. Car is still new with 4k miles only.

As you can see in the picture its a 175KW charger and the amps are not increasing.

 

[Striker]

It can be the charger, not the car. Even in ideal conditions in summer, connected to a 120KW charger, the rate was 50KW. A quick check on ZAP map comments, showed that this was common and that this particular bank of chargers didn't always deliver anywhere near their claimed rate

I did say "ideal" because as others have mentioned, temperature and state of charge, are also big factors

FYI my car is a ZS Trophy LR and has charged at 92KW on other chargers

 

[Roldorf]

I have only charged my car twice, still under 400km but, the first charge was at a 300Kw charger by ENBW and charged at 86kw. The second charge was at a Fastned 300Kw charger and it only managed 40Kw, temperatures were much the same both times. I think charge rate has more to do with available power for the charging station than the car.

 

[N2STY]

Speed will reduce if the cells are not balanced

 

[nwarddrfc]

It’s pointless ever using anything over 100KW as the most the zs can take is around 90KW up until 45 percent then drops to around 75KW and slowly drops till 82 percent so at that point may as well get back on with your journe.

info taken from MG ZS EV Long Range

 

[sgt4hed]

I've been noticing past few days that my MG ZS LR has been charging very slow. I have had the battery heater on. Brought it at a low state of charge and only hitting 57 or 58KW. Its becoming a bit annoying. The Kona I had before regardless of temperature would rocket up to peak charging as soon as I would connect it at low state of charge. Its getting frustrating as I rely solely on public charging. Car is still new with 4k miles only.

As you can see in the picture its a 175KW charger and the amps are not increasing.

The ZS will only charge at a max of 90kW anyway so the fact it is a 175kW charger is kind of irrelevant, you might even be paying more because it has a higher potential... I look for 50-100kW chargers as anything less is too slow and anything more is pointless.

 

[apzs]

The ZS will only charge at a max of 90kW anyway so the fact it is a 175kW charger is kind of irrelevant, you might even be paying more because it has a higher potential... I look for 50-100kW chargers as anything less is too slow and anything more is pointless.

The chargers I have here are 75Kw and 175KW. I know the car can take close to 90Kw but my question here was why I'm only getting under 60 even on lower SOC. I preheat the batteries as well for atleast half an hour.

I feel its the charger not pushing enough power. I'll have to try at another fast enough charger

 

[N2STY]

The chargers I have here are 75Kw and 175KW. I know the car can take close to 90Kw but my question here was why I'm only getting under 60 even on lower SOC. I preheat the batteries as well for atleast half an hour.

I feel its the charger not pushing enough power. I'll have to try at another fast enough charger

And your Upto date with balance charging?

 

[apzs]

And your Upto date with balance charging?

The car has had 4.2k miles on it. I have done it once when it was close to 1.5k miles. Mightneed to do it again at some point. Didn't think that would be an issue now.

 

[N2STY]

Don't know every DC charge will be slower than the one before in theory as the cells get more unbalanced and regen don't help the situation I suppose how many DC chargers you do?
In mg services book it says
In order to maintain the performance of the high-voltage battery pack, the customer shall carry out equalizing charge
regularly (at least once a month), as detailed in the User Manual.

 

[apzs]

Don't know every DC charge will be slower than the one before in theory as the cells get more unbalanced and regen don't help the situation I suppose how many DC chargers you do?
In mg services book it says
In order to maintain the performance of the high-voltage battery pack, the customer shall carry out equalizing charge
regularly (at least once a month), as detailed in the User Manual.

Hmm that's interesting. Once a month is a bit hard to do since I only rely on public charging.

Weird because I barely did that on the Kona I had before this. Over the course of the 13k miles. I think I charged it to 100% 4 or 5 times.

Guess, I'll try to charge to 100% tomorrow.

 

[N2STY]

Have you checked on zap map to see what others are saying about the charges your using?

 

[apzs]

Have you checked on zap map to see what others are saying about the charges your using?

No recent comments. I have noticed a skoda enyak pulled into that charger and was only pulling 60kw so I have a strong suspicion that the charger is not pushing enough.

 

[Lovemyev]

Hmm that's interesting. Once a month is a bit hard to do since I only rely on public charging.

Weird because I barely did that on the Kona I had before this. Over the course of the 13k miles. I think I charged it to 100% 4 or 5 times.

Guess, I'll try to charge to 100% tomorrow.

When charging from a D/C rapid unit very regularly, then the MG recommend balance cycle needs to be performed once a month on a A/C supply.
Balancing can not be achieved on a D/C unit of course.
I take it you are not charging to 100% full on every D/C rapid session, as throttling back on charging speeds makes this impractical.
Maybe ? charge to 80+% on a rapid and then move onto a A/C post to finish charging and balance a couple of times a month ????.

 

[apzs]

When charging from a D/C rapid unit very regularly, then the MG recommend balance cycle needs to be performed once a month on a A/C supply.
Balancing can not be achieved on a D/C unit of course.
I take it you are not charging to 100% full on every D/C rapid session, as throttling back on charging speeds makes this impractical.
Maybe ? charge to 80+% on a rapid and then move onto a A/C post to finish charging and balance a couple of times a month ????.

No tend to stick around the 80% mark on DC chargers. Yeah I was hoping to go to the lamppost charger near my house but as usual someone has been hogging the charger the whole weekend now

Guess I'll do this next weekend now