🙅♀️ not in my case. Driver may be on long holiday or working abroad for > 1 month. Might want to change month of taxation. May only drive their Cyberster in the Summer 😎
IMHO, no. For reasons mentioned in my posting below...
Better to have an adjustable supply, as @johnb80 mentioned - see my link in post #24. Or telecoms PSU such as Eltec Flatpack, Emerson or Chargeverter.
https://www.mgevs.com/threads/solar-battery-and-v2l.20084/post-371810
Provided the...
@rpannell was referring to voltage, rather than power. It can be an issue for some users (e.g. @Montego as detailed in the thread below). It could be that other households on the same phase as you have recently added EVSE and pulled your local voltage down.
As well as testing without...
Sounds like a good plan. Hopefully the car is OK if it works with the granny, unless the fault is specific to charging at a greater rate than the granny can provide.
Has anything else changed, especially with regard to your power supply, that coincided with the failures? e.g. have you had...
Do you have a granny charger to test it from?
Does it work at an AC slow charger at a supermarket?
Doing those tests should help pinpoint whether the issue is with the car vs. your Zappi (or OE).
I agree, but there could be a caveat in that as Rolfe's installer said it is not possible it could be that Rolfe's system uses HV batteries, rather than standard 15S or 16S "nominal 48V" low voltage system. As far as I can see, Givenergy have both LV and HV systems 🤷♀️
You say the AA checked the 12V battery and found no faults - do you know if they just measured the open-circuit voltage or did they use some load test equipment on it (hopefully, the latter). If so, I'd say its unlikely to be the 12V battery, from the symptoms you've described. Having said...
The solution that I and others (e.g. @johnb80) have detailed on other threads - assuming you have standard low-voltage (nominal 48V) system is to charge / top up your home storage batteries via an adjustable telecoms-type power supply from V2L output of the MG. e.g. as discussed in the thread...
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