14.2V and 13.9V are not used to determine whether the battery has reached the end of its life, because it will calculate the remaining power and ambient temperature and adopt different charging strategies.
As far as I know, chargers (not just yours) are prone to overheating of the incoming wire and poor ground contact, which can lead to charging termination.
And after unplugging the charger, its warning will disappear. You need to pay attention to its indicator light or APP the next time it appears.
Shouldn't the car still be under warranty?I think it can work. Please note the high DC voltage output, which determines whether it corresponds to LFP or NMC battery.
I agree with #10MG4 is single phase 7kw in China, seems to be the same in Europe, in some countries it is 3 phase 11kw
https://www.mg.co.uk/new-cars/mg4-ev
Performance
Estimated Charging Time (7kW Fast Charger) 10 to 100%
The size of 12V lead-acid battery, which is called 54465 in our country, can be viewed in the PDF below
https://www.leoch.com/pdf/sli/automobile-battery/Flood-EN/54465.pdf
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