Mg 4 long range battery

[Golea9]

Hi , I have a mg4 long range 64 kw battery capacity, a few days ago I charged from 3% to 97%, the total kw received was almost 55 kw, is this normal or the battery is not 64 kw?

 

[emmrecs]

@Alb @Rolfe

?Move this post to MG4 forum?

 

[Golea9]

@Alb @Rolfe

?Move this post to MG4 forum?

Hi , I'm new here! Can you move it for me , or I have to do it ? Thanks!

 

[Corindikev]

3% is about 2kWh & 97% is about 62 kWh. So 55 + 4kWh is 59kWh if you believe the values are mathematically accurate which they are not.

There is still battery capacity left when the car reads 0% & 100% is different if fast charged from a DC charger as balancing does not take place. Slow AC charging will balance the cells and can take half an hour or even longer if balancing has not been done for some time and can add a kW or 2 even after the software is reporting 100%.

The other complication is that of the 64kWh capacity only 61 kWh is useable.

So there is no definitive answer due to variable scenarios . The real answer is "It depends"

 

[emmrecs]

@Golea9

Welcome to the MGEV Community Forums!

No need to apologise for being a newbie!! We were all in that situation once.

I can't move your post and I don't think you can either. But I've tagged two of the Forum moderators who can move the whole thread.

 

[Alb]

Moved to the MG4 forum

 

[webhiker]

Also there is a differenced in "Delivered" energy versus "Received" energy aka losses.

 

[Anon70]

This is from 2 years and just over 8,700 miles in my XPower. Using the battery % vs what the chargers say they have delivered has show a difference of 219 kW over 137 charging sessions (108 AC and 29 DC, with 22 to 100%). About a 7% variance.

From the battery % this is roughly what the useable kW should be in an XPower

 

[Golea9]

Thanks for quick replies ! I'm trying to figure out why the battery drains so fast, with a full charge I get 120-130 miles when it's below 4 degrees and 200 mile on good weather even if I charge it slowly. I've had the car since it was new, I've always had the same range

 

[LenEV2016]

Thanks for quick replies ! I'm trying to figure out why the battery drains so fast, with a full charge I get 120-130 miles when it's below 4 degrees and 200 mile on good weather even if I charge it slowly. I've had the car since it was new, I've always had the same range

Could speak a debate about the right way and wrong way to do it but do you do equalisation charges?

And check you intelligent battery heating isn't on, that uses a lot of power and some people had it defaulted to on

 

[Golea9]

Could speak a debate about the right way and wrong way to do it but do you do equalisation charges?

And check you intelligent battery heating isn't on, that uses a lot of power and some people had it defaulted to on

It's off intelligent battery, equalisation mean under 10 % and charge on slow? I did it....could be from charging port lights ? lights are off but charging normally

 

[tsedge]

Thanks for quick replies ! I'm trying to figure out why the battery drains so fast, with a full charge I get 120-130 miles when it's below 4 degrees and 200 mile on good weather even if I charge it slowly. I've had the car since it was new, I've always had the same range

It is normal to get significantly less range in winter. It will be heavily influenced by how you drive, where you drive and the weather.

Biggest effects on range:

• Temperature (cold battery has less range to give)
• Speed (drive slower on the motorway makes a huge difference)
• Hills (reduce range significantly)
• Wind (can reduce range significantly if headwinds)

 

[LenEV2016]

It is normal to get significantly less range in winter. It will be heavily influenced by how you drive, where you drive and the weather.

Biggest effects on range:

• Temperature (cold battery has less range to give)
• Speed (drive slower on the motorway makes a huge difference)
• Hills (reduce range significantly)
• Wind (can reduce range significantly if headwinds)

Unless that is all motorway driving though it's seems very low for a long range

 

[tsedge]

Unless that is all motorway driving though it's seems very low for a long range

Missed that it was LR. Yes, it is very low for a long range. Possibly it has a problem then.