Recent content by Coulomb

I did recently get a sudden bunch of warnings about tyre pressures, but they were legitimate. When I pumped up the tyres, the warnings stopped, after a few minutes of driving.

Oh, sorry. Yes, I guess that since a fill only takes 5 minutes, the cable won't immediately melt. But it means that if you're the second or third BYD to fill up, you'll "only" get some 500 A. That's assuming that they derate the maximum charge current with cable temperature, as they obviously...

That's what RMS is all about: making AC the same as DC from the point of view of heating etc. There is a slight skin effect even at 50 Hz. But it's mostly about getting the heat out. The calculations are based on continuous loads. Fuses, breakers, and the cables they protect can take...

The cable in the video looked like it was just thick enough for one conductor, and of course you need two very heavy conductors, plus the cooling. Ok, with cooling, the conductors can be a little thinner, but I'm sceptical.

I believe that it's mainly, probably only, an issue with the pre facelift model (Mark 1).

You may be thinking of the eZS app, for Android only. Available from the Google Play Store. But I don't know if it will work with the MG4.

A pretty reasonable test to me would be see if it can make roughly 91%, or whatever the claimed State Of Health is, of the stated new car range, under roughly Worldwide Harmonised Light vehicles Test Procedure (WLTP) conditions. Running full battery to turtle, of course. You can't prove the last...

I find it hard to believe that they can get the connectors and even the cable (as Everest mentioned above) to handle 1000 A (1000 kW = 10⁶ W = 1000 V x 1000 A!). The connector is a sliding contact by mechanical necessity. Having that maintain milli-ohm resistance (each milli Ohm is a volt of...

Possibly this one: https://www.mgevs.com/threads/frunk-solution-zs.4762/ I didn't read to the end to see if it fits the latest model (Mark 2). There was also a fancy one from a Scandinavian country, but that might have been MG4 only.

I'm pretty sure that I've read on this forum that if they need to reprogram a key, then they have to have both keys there to do it correctly, or possibly to do it at all. It sounds to me that this dealership possibly doesn't reprogram keys very often, and missed at least one step in the process.

I assume that the boot lid motor is a fairly substantial 12V load. So if the 12V battery has high internal resistance, then with a heavy load the battery voltage would sag significantly, triggering the low battery warning. High internal resistance can happen for several reasons. It may be that...

Unfortunately, neutral requires the HV battery to be present. It's not like there is a clutch or multi-speed transmission there to achieve neutral mechanically. With a permanent magnet motor, neutral is achieved by actively generating a three phase voltage that opposes the permanent magnet...

There are some posts about getting the latch for the rear hatch adjusted.

It's probably the Rear Collision Warning, as discussed in this MG4 thread and elsewhere: https://www.mgevs.com/threads/hazard-lights-flashing.13158/

Basically, yes. But it's impractical to discharge to 0% usable SoC, so take the remaining SoC into account as well. But then there is charging efficiency to take into account as well. So it's much easier to just accept the car's SoH estimation instead.