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It's an all-too common problem with the CCU that generally only seems to be fixed by replacing it (under warranty) - see this (lengthy) thread. Zappi failing to charge car to 80% (Edit update: Not a problem with Zappi. Issue with AC charging/New CCU ordered)

Had my first successful home AC charging for 5 months this week, after a new CCU was fitted 10 days ago. Hopefully it will continue.

Finally got my replacement CCU fitted earlier this week. Not had a chance to charge it at home yet since the garage tested it by fully charging the battery to 100% (first battery balance charging for 4 months). Hopefully the problem is fixed (and there is a supply of CCU's in the country).

No luck with having a replacement CCU fitted - garage say they ordered the correct part, but what was in the box was wrong - only took them 2 weeks to discover this. They are now trying to get the correct part (from 16th December) but no progress so far - seems there are none available in the...

It can't be coincidental that the MG shuts down discharging when the load drawn exceeds 7kW (see MG4 rocking 7kW V2L Real full home use possible.). If 2.2kW was the peak output available for discharge then surely they would have set this as the cutout power level?

Whilst MG advertise that their V2L is capable of delivering 2.2kW I can't find anywhere in their documentation where they specify that this is the maximum power that can be draw from the car, and that exceeding this limit might void their warranty.

I agree with Coulomb - there is a simple mod to tell the MG4 how much power it can deliver when discharging (470 ohm resistor in the plug), which really is just to indicate that the discharge cable is capable of conducting 30amps. The MG4 V2L cable is provided primarily to power AC mains devices...

I think you should insist that they charge it to 80-100% to demonstrate it is charging correctly before taking it back - may mean leaving with them an extra night, but a much better and more demonstrable test.

My main usage will be to power a heat pump, where the main demand is in the wintertime when the power I get from my 3kW solar panels is often <<1kW. Re-charging the car batteries will be overnight, when cheaper grid power, which will also be powering the heat pump. I might expect to use 8-10 kWh...

My dealer has also had approval from MG to replace the CCU - costs ~£1800, fitting next week hopefully. However, there may be a shortage of them if demand is strong - hopefully there are plenty available. Looks like MG may have been fitting sub-standard units at the end of 2022 for the batch of...

Whenever I need it - then the grid or solar powers the house.

A bi-directional charger would be useful but is currently not economically justifiable. The solution is to manually switch between the charging cable (overnight charging) and the discharging cable.

I am not particularly interested to use the car as an off-grid emergency backup supply - we have only had only 2 or 3 (usually brief) power outages in our area in the past 30 years. However, being able to use the 64kWh battery of the car to power the house is appealing as a very efficient and...

I do have solar panels. However, have used these much less to charge the car over the past 2 months whilst using cheap rate overnight charging - this was really when it started for me.

I assume that these inverters would use the AC output from the car in island mode, disconnecting the house from the grid? If it was possible to take the AC output from the car, convert it to DC and then feed this into a hybrid inverter (DC voltage level from converter matched to DC input of...

Went to visit my dealer (Glyn Hopkins, St Albans) today due to the lack of information regarding progress an assessing the problem for my MG4. They told me that ALL issues associated with eh car's high voltage system required explicit consultation with MG China (a messaging system with no...

This is my first visit to the dealer since I collected the car at the end of March so have had no experience of how good or useless they are. However, I am not encouraged by the fact that they may be asking the same questions and getting the same answers as you, but not making much progress in...

Retro-modifying current vehicles to output DC seems less likely than anticipating the availability of a hybrid invertor that could take in the V2L AC output, or as a DC source that has been generated by using a convertor for AC to DC conversion.

My conversation with someone at the dealer this afternoon indicated they had been asked to provide information regarding DCDC and EVCC issues - not clear if this is just a software check, but they were saying it was going to take a full day to undertake. More news tomorrow (hopefully).

So would there be a real opportunity for a hybrid invertor company to develop a version that would take a low impedance input - demand that surely will be on the increase given the number of EV's that provide V2L to various degrees, whilst none make DC available to output.