Electric car home charging??

Sammysmiths

Sammysmiths

Well-known member
I’m possibly going to buy an electric car and wondering what is the difference between using a dedicated home installed charging point, and a 3 pin plug adaptor supplied with the car.
The car I’m looking at (MG4) has a 64kwh long range battery, and takes approx 8.5 hours to fully charge. Our home electricity rate is 29.29p a kw/h.
Thank you for any advice.
 
Sammysmiths said:
I’m possibly going to buy an electric car and wondering what is the difference between using a dedicated home installed charging point, and a 3 pin plug adaptor supplied with the car.
The car I’m looking at (MG4) has a 64kwh long range battery, and takes approx 8.5 hours to fully charge. Our home electricity rate is 29.29p a kw/h.
Thank you for any advice.
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Are you sure it takes 8.5 hours with a 3 pin?

I have a home charger and it takes around 6 hours to fully charge (to 300kms).
 
1finny said:
Are you sure it takes 8.5 hours with a 3 pin?

I have a home charger and it takes around 6 hours to fully charge (to 300kms).
Click to expand...

If my back of a spreadsheet calcs are right, that would mean a current of about 27 Amps to charge from 0% to 100%, or 22 Amps for an 80% charge. That would set your house on fire if attempted on a domestic 3 pin plug.
 
I think realistically, especially in the long term you will need to invest in a charger, so may as well do it straight away. I'd be looking at your costs of 29.29 a Kw/h as priority, most like myself are not paying a 3rd of that to charge our EVs
 
It’s all confusing.something about 150kw charging power? I really know nothing about the various charging options. I just need to know that it will be more cost effective charging it on a 3 pin plug, than putting diesel in my current car .
 
TheLodger said:
I think realistically, especially in the long term you will need to invest in a charger, so may as well do it straight away. I'd be looking at your costs of 29.29 a Kw/h as priority, most like myself are not paying a 3rd of that to charge our EVs
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How are you paying a cheaper rate? Do you charge elsewhere or through some sort of plug or other energy supplier?
 
Your standard three pin will not charge in that time. That reference will be for a standard home fitted 7kw charger.

Your three pin will take double that time as a minimum at a guess

Your 150kw/h quote is the max rate to charge it can take through DC charging points. You will see these superchargers around now that can charge upto 350kw/h but not many cars can hit that rate.
 
Sammysmiths said:
It’s all confusing.something about 150kw charging power? I really know nothing about the various charging options. I just need to know that it will be more cost effective charging it on a 3 pin plug, than putting diesel in my current car .
Click to expand...
Oh no, the gauntlet has really been thrown down by opening it up to comparison with diesel.

On for a double ton.
 
I used a local company, did a fine job, I paid a little more (£1100) because I chose local, ~I know that the big companies like Octopus are charging about £950 for full install.
 
3 pin takes about 3x as long as the 7 Kwh EV charger. Mine is about 12 hours 0-100% in the dedicated charger or 36hrs on 3 pin.
 
Not related to charging but specifically the MG4, have you checked out any of the forums? Software issues and transfer gearbox oil leaks?
 
I'm on the octopus tracker and I don't think it will have cost me more than £10.50ish (sometimes considerably less £7/8) to charge from 20% to 80/90% since February. The equivalent in petrol/diesel would be £30+.

Public charging isn't as cheap and is closer to petrol prices. Home charging is a game changer and much cheaper than petrol/diesel.

I wouldn't rely on 3 pin charging being your main charge though - you won't be going far if you do. You'll either need a 7kw/h installed at home, which will give you a full charge overnight or you'll be using public chargers.
 
My daily commute is 72 miles round trip but I lift share so maybe only drive once a week (sometimes twice). I’ll look at the Octopus options. Thank you for the advice.
 
SE4 Red said:
I'm on the octopus tracker and I don't think it will have cost me more than £10.50ish (sometimes considerably less £7/8) to charge from 20% to 80/90% since February. The equivalent in petrol/diesel would be £30+.

Public charging isn't as cheap and is closer to petrol prices. Home charging is a game changer and much cheaper than petrol/diesel.

I wouldn't rely on 3 pin charging being your main charge though - you won't be going far if you do. You'll either need a 7kw/h installed at home, which will give you a full charge overnight or you'll be using public chargers.
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I think you can get away with a 3 pin charge depending on circumstances. I only charge when I get low and do it overnight which is about once a week. There are occasions where I end up low and need it next day where the 3 pin wouldn't be any good but you can always stop and do a fast charge somewhere. If you are commuting half hour range every day it would be no good but if you are only needing to charge once a week then always plugging when you get home would solve that.

It is definitely more convenient though to have a dedicated charger, especially if you have a tethered connection so you don't have to mess about with cables.
 
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