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After many attempts to get hold of MG richmond Portsmouth. They eventually agreed to have the car in next week to update the BMS as car keeps asking to slow charge. So when I have been carrying out a balance it is not actually doing it even though the light indicates it is 🙄

Interesting. Just wonder why mine is so temperamental. Could be a number of things. Doesn't really matter too much now as we have a charger installed. Will test the granny charger at friends house when required

No nothing like that, no powerlone adapters etc...

Yes used all available sockets and proved with other devices

Socket tested OK, using tough leads 5m extension with in line RCD

Using mine to charge the zs whilst waiting on home charger install. It is really temperamental, sometimes works first time. Sometimes I get the whizz whizz and "connected but not charging" What are everyone's thoughts?

Seeing improvements now after many a balance been carried out. Seeing around 150 miles on the "guess oh meter" on normal and about 162 on eco. Thank you to all those who chipped in for advice, I t is very much appreciated

Finished work today, checked what I believe is BCM build number (picture attached), reset all trips, ensured all 12v loads off and currently (pardon the pun) on slow charge using the granny charger. Will leave it to 100% and balance. Will report back shortly. With hopefully improved range after...

Thank you for advise, very much appreciated. I would agree looks like used for short journeys with, in my opinion battery never looked after. Good suggestion I will document SOC etc.. I have already ordered an ODB2 reader so I can check the battery stats, firmware, software....

Thank you for that, I am using a granny charger In the garage wall socket (awaiting home charger install pod point) I will try another charge and balance tonight ensuring all 12v items are switched off and reset both meters before hand. Is it worth disconnecting the 12v battery on the negative...

Yes both trip computers reset

After a full charge and balance over night the attached picture was the outcome. Looks like we have an older BMS and that millage is very low. Thoughts would be much appreciated? Edit, heating was on, jumped to 141 miles once off but still low right, will do another balance tonight.

I hope I don't have the same issue with months of balancing

Will let it do a full balance, trip to work then do another full balance. Like you said don't think it's ever been done.

Thank you for the reply. I have sent the dealer the software version we have and awaiting reply. Also had a "please slow charge the vehicle" when I left work today. Will update once I hear back from the dealer Checking with the dealer today and just awaiting reply 👌

Good afternoon all, new to the forum. Apologies if this has been covered but can't find it. I recently bought a MG ZS ev 2020. One thing I have noticed is the voltage reading on the main battery pack is around 431v. I have been reading this should be around the 450v mark. I will carry out a...