MG4 Granny Lead - AU 8A vs UK 10A ?

[frumper]

the MG granny charger that comes with the Australian MG4's is only rated and outputting 8A which is annoying considering our outlets are usually on 20A circuits and more than happy to do at least 10A and 15A with the correct socket. any chance someone could take a photo of the internals of a UK 10A unit, on the off chance there's a jumper set different?

 

[JoeBlow]

While we wait for a UK person to respond, I tried my car with a 10A Tesla UMC and it also maxed out at 8A.

It also will only pull 30A from a 32A 1 phase charger, so tops out at 6.5kw just like the BYD cars do.

I'm yet to try the 15A tail on the Tesla UMC so I'm not sure what it would pull with that.

The car only offers 8 and 16 (and "AC Current") as options so it's like they've programmed the "80%" rule into the car itself without taking into account our lack of that rule and also that our common size is 10A and 15A not 10A and 20A.

 

[frumper]

I have a UMC with a confirmed firmware updated 15A tail, i get 2.9kW into the MG4 consistently (not sure what it's drawing as i don't have a meter on that circuit).

 

[JoeBlow]

That's what I expected. Mine are firmware updated as well.

 

[jpk]

I got about 3.2KW using the blue 16amp commando socket on the the Tesla UMC when I tried it at work, seemed surprisingly efficient

 

[JoeBlow]

3.2KW using the blue 16amp

So from my math that's roughly 80% too. But I'm not entirely familiar with that style of socket, I think they are used in australia, but not super common.

 

[SimonS]

Pic of UK charger below. Silkscreen in the bottom left corner suggests this is an EU version V1.1. I can't read the silkscreen on your pic.

Rear label suggests max 10amp output equal to 2.3kW. The actual taken by the car is 1.9kW or 8.26 amps.

 

[Rolfe]

I get two significant figures after the decimal point, and it generally shows 1.87 Kw.

 

[siteguru]

On our nominal 230V AC system that equates to just over 8A charging current.

 

[fnegroni]

On our nominal 230V AC system that equates to just over 8A charging current.

I think it’s more to do with the onboard charger losses

 

[frumper]

Looks the same to me, so i guess it's just software. the way it's built i suspect it's rated to 16A.

While we wait for a UK person to respond, I tried my car with a 10A Tesla UMC and it also maxed out at 8A.

It also will only pull 30A from a 32A 1 phase charger, so tops out at 6.5kw just like the BYD cars do.

I'm yet to try the 15A tail on the Tesla UMC so I'm not sure what it would pull with that.

The car only offers 8 and 16 (and "AC Current") as options so it's like they've programmed the "80%" rule into the car itself without taking into account our lack of that rule and also that our common size is 10A and 15A not 10A and 20A.

I just put a meter on both, the UMC with 10A tail pulls 9A and car gets ~1.7kW while the AU MG granny pulls 7A and the car gets ~1.45kW