Trickle Charging issues on MG ZS EV

[Tim Green]

My son has recently purchased a 2020 Mk1 excite model (33000 mi) and is having problems with the granny only charging to 7 bars or about 110 miles GOM. I have leant him my granny to see whether that solves the problem.
I have a 2020 Exclusive Mk1 (25000 m) and I noticed that my son's car seems to have the original fascia software, eg: no continuous display of GOM and no temperature display. Has it missed out on the update or did it not apply to the excite model?

 

[Tim Green]

Test with my granny shows the same result. Put on charge at 7pm with 75 miles GOM. 10am in morning shows 8 bars (full) but only 115 miles GOM. Miles/kWh shows 4.2. Something must be wrong - any thoughts? Son has had the car for about 3 months, 2020 car mileage 34k miles.

 

[fred12345]

Test with my granny shows the same result. Put on charge at 7pm with 75 miles GOM. 10am in morning shows 8 bars (full) but only 115 miles GOM. Miles/kWh shows 4.2. Something must be wrong - any thoughts? Son has had the car for about 3 months, 2020 car mileage 34k miles.

if he bought it from a dealer, he should ask them to have a look and make sure the car is in good order. I think he would have 6 months window to refuse the car if there is something seriously wrong with it.
miles/kWh of 4.2 could be his last drive? and GOM depends on how he drives the car. How is your GOM and mi/kWh compared to his?

 

[Tim Green]

My car is same age and similar mileage and gets consistent 170 miles after full charge. M/kw much the same at about 4. It is very odd, but I think there must be something wrong with my sons car.

 

[fred12345]

My car is same age and similar mileage and gets consistent 170 miles after full charge. M/kw much the same at about 4. It is very odd, but I think there must be something wrong with my sons car.

Ask him to get the battery down to 9%-10% and then charge to 100% on a granny charger and leave it balancing until it stops charging by itself - could take 12 hours or so + 1-3 hours balancing when the car says it's already on 100%. That should balance the battery and refresh GOM ...

 

[Tim Green]

Worth a try I suppose. He has had it on charge (with the granny) for long periods of time in an effort to get the GOM mileage up.