Regen strength

[robrymond]

Picked the car up yesterday and did some driving around with about 20% battery and regen on high seemed on par with the Audi Q4 I drive where it is nearly one touch driving.

However tonight I've been out and the battery was on 99% and it just didn't feel as though there was any resistance in the highest setting. Is this because the battery is fully charged?

 

[aitch]

Basically yes

 

[robrymond]

Basically yes

Interesting, never noticed when the Audi is fully charged any difference in the resistance.

 

[Diggsy]

As above, yes as there is nowhere for regeneration to go at full or close to full charge

 

[Ayoull]

You'll also experience the same if the battery pack is too cold or too hot... Basically the regen is like a cricketer... It needs to be just right

 

[jonney]

There is no regen between 95-100% charge. Most cars have this as there's nowhere for the current to go.

 

[siteguru]

I find regen minimal down to about 90%, but maybe that's an SR model characteristic.

 

[PeteC]

There is no regen between 95-100% charge. Most cars have this as there's nowhere for the current to go.

When my old BMW i3 was fully charged and I lifted off the accelerator it automatically applied the brakes to slow down at about the same rate as regen would when it wasn't fully charged, so it always behaved about the same regardless of state of charge. I used to hear the brakes come on if the discs had a bit of light surface rust on them. First time I lifted off in my fully charged MG4 and sailed merrily on it took me a moment to realise I had to apply the brakes myself! I was always impressed as to how sorted the i3 was, especially as mine was an early 2014 version.

 

[robrymond]

When my old BMW i3 was fully charged and I lifted off the accelerator it automatically applied the brakes to slow down at about the same rate as regen would when it wasn't fully charged, so it always behaved about the same regardless of state of charge. I used to hear the brakes come on if the discs had a bit of light surface rust on them. First time I lifted off in my fully charged MG4 and sailed merrily on it took me a moment to realise I had to apply the brakes myself! I was always impressed as to how sorted the i3 was, especially as mine was an early 2014 version.

I guess this is how I expected the MG4 to react. It made sense that there is no regen taking place but I still thought the reaction would be the same.

 

[MuzGB1970]

Regen normal from 98% on my Trophy. Had a few anxious moments after a full charge and needing to press the brakes much harder.

 

[jonney]

I guess this is how I expected the MG4 to react. It made sense that there is no regen taking place but I still thought the reaction would be the same.

Yeah most manufacturers set that up. It's not a great idea to have different braking performance because of the charge.

 

[Diggsy]

Yeah most manufacturers set that up. It's not a great idea to have different braking performance because of the charge.

Going by some of the other anomalies, if MG set that up the car would probably do hand brake turns!

 

[Deleted member 9692]

When my old BMW i3 was fully charged and I lifted off the accelerator it automatically applied the brakes to slow down at about the same rate as regen would when it wasn't fully charged, so it always behaved about the same regardless of state of charge. I used to hear the brakes come on if the discs had a bit of light surface rust on them. First time I lifted off in my fully charged MG4 and sailed merrily on it took me a moment to realise I had to apply the brakes myself! I was always impressed as to how sorted the i3 was, especially as mine was an early 2014 version.

I had an i3 and mine if fully charged would have no regen at all. It could be quite alarming when I first had the car given the temporary absence of the normally strong regen it did result in some “oh sh*t” moments approaching junctions. As soon as the battery had depleted a bit then normal regen returned, quite quickly I recall when down to 99%. I agree it was a very well sorted car.

 

[Bluesparky]

nearly caught me out the first time I fully charged the car, I live on a steep hill and regen allows me to roll down at a reasonable speed, had to hit the brakes sharpish the first time regen didn't kick in, didn't notice the warning that comes up when you start the car until a later date.

 

[LeoRBK]

I believe no regen is more obvious after say 95%. I believe you can set the top limit for a charge in the infotainment which is recommended for better battery life. It serves two purposes if we are to set it to 95%, constant regen and battery lifetime.

 

[PeteC]

I had an i3 and mine if fully charged would have no regen at all. It could be quite alarming when I first had the car given the temporary absence of the normally strong regen it did result in some “oh sh*t” moments approaching junctions. As soon as the battery had depleted a bit then normal regen returned, quite quickly I recall when down to 99%. I agree it was a very well sorted car.

So not just MGs that behave differently! Mine definitely (audibly) put the brakes on at a junction not half a mile from our house after a full charge. It had a tiny battery so I guess it could have dropped to 99% by there, but I still heard the brakes come in.