Turbo - red circle of death, perhaps a fix for my car... but battery idle issue

[TurboSpain]

you can force the car to update the SoC shown in the app by using the app to change to battery charge limit %

Yes, that can work. Activating the car's turn signals/horn also works. But be careful, this will wake the car from "sleep" mode and it will consume a little more energy.

Anyway, I don't want to make a big deal out of this. 1% = 1 kWh can mean €0 if you charge with solar panels, or €0.06 x 30 = €1.80 per month with Octopus' Intelligent Go tariff


In our old ICE vehicles, although the loss was less because they had less electronics, it was also compensated for by a little more gasoline consumption to charge the 12V battery...

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[ChrisFromUK]

...
Anyway, I don't want to make a big deal out of this. 1% = 1 kWh can mean €0 if you charge with solar panels, or €0.06 x 30 = €1.80 per month with Octopus' Intelligent Go tariff
...

In summer I drove down from Manchester to Southampton and parked up for 2 weeks at 68% whilst I went on a cruise.

When I got back, the SoC was only 55% which meant I didn't quite have enough range to get to my planned lunch venue on the trip home.

So the loss does matter, although not financially.

My wife's Renault electric has been left for up to 6 weeks with only a 1% SoC loss.

As an aside, I'm on Octopus Intelligent Go too. I never charge the car from solar as it's more profitable to export any excess for 15p/KW and only charge up over night at 7p/KW

 

[TurboSpain]

My wife's Renault electric has been left for up to 6 weeks with only a 1% SoC loss.

Renault may be very efficient, but I still have a doubt. The SoC that cars usually display is calculated using an algorithm (just like the range indicator), and each manufacturer/engineer does it differently. The only known way to determine the capacity of an EV battery is by charging "x" kWh and checking how many "y" kWh it can discharge; everything else is an approximation.

As an aside, I'm on Octopus Intelligent Go too. I never charge the car from solar as it's more profitable to export any excess for 15p/KW and only charge up over night at 7p/KW

You're so lucky, Octopus only pays me €0.04 for the excess... At least I live in a sunny country

 

[ChrisFromUK]

... SoC that cars usually display is calculated using an algorithm (just like the range indicator), and each manufacturer/engineer does it differently. The only known way to determine the capacity of an EV battery is by charging "x" kWh and checking how many "y" kWh it can discharge; everything else is an approximation.
...

Even if the SoC is wrong and I accept it's possible, the loss of drive-able range is very real which does imply the loss of charge is probably real.

 

[TomekGnomek]

I’m with Petzi on this one, mine also does not loose almost any power when left idle for longer time like a week or two. Same for Taycan.

 

[Petzi]

Yes, sorry for the typo (SoC)

I don't want to start a debate. If someone thinks an EV doesn't lose energy over two weeks, good for them. That's not the case with my car, and I don't think it's the case with most others either. There's a lot of information out there about other EVs, but for Porsche in particular, there isn't much data.

For example, this article summarizes it like this:
https://chargerigs.com/do-electric-cars-lose-charge-when-parked/

It doesn't matter if the energy comes from the auxiliary battery or the main battery, since the auxiliary is charged with the main. We also don't know how the Macan calculates the SoC (because it's a calculation based on the cells, not a direct measurement), but what is certain is that there is power consumption.
The Macan user manual says that it should be left connected to a charger if it's going to be parked for a while. There must be a reason for this recommendation.

thats the point that got sidetracked (again, as always here) by a the debate how often the soc updates in the app. fact is that my car is parked for 13 days and has lost 0% soc

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