2nd cars not charging as expected

[ppmt]

a few weeks ago I configure predbat for my new car and all worked well. Now we have 2 electric cars and I just can't get it to charge as I want.

I suspect it is a bad config on my side but....
Here is my config for both cars

Le me know if this is not enough info.

So when I plug a car I have a switch which I use to say which car is connected. When I select the first one (lulu) then it works perfectly. I can set the initial SOC (none of my car can report it!), I can also say how much I want to charge the car and predbat does its magic and all is good.

When I select the second one (ioniq) and do the same it behaves completely differently. whatever initial SOC I enter predbat seems to assume it needs to charge the car from 0%. That is annoying but we could work around that.
So If I work around and say to charge 10k it will select the correct amount of slot to deliver the 10k.

What is not good is that the sensor input_number.predbat_car_charging_manual_soc_kwh does not increase as the car is charging. So as far as predbat is concerned the car is not charging and it constantly reschedules new slow. The result is that the car get overcharged until it is full.

It works perfectly when I charge the first car. I can see that input_number.predbat_car_charging_manual_soc_kwh is increasing as the car is charging.

As I said I suspect I have a bad config but I can't work it out and would appreciate some guidance.

Thank you

[ppmt]

I have made some progress but still something is wrong for the second car.
In my original config I didn't set the initial SOC so I added that in the apps.yaml

  car_charging_soc:
    - input_number.car_initial_charge
    - input_number.car_initial_charge

That improves the situation and now predbat knows where my second car is starting from and it calculates the right amount of kw to charge the car.

But still the predbat_car_charging_manual_soc_kwh does not increase as the car charges. The result is then the same the car keeps charging until it reaches full capacity since predbat keeps recalculating new slots.

I have read the documentation over and over and I really don't understand what I am missing

[gcoan]

I don't have an EV, let alone two, so can't test any of this, but looking at the code, it appears as if predbat only has the ability for there to be one car_charging_manual_soc_kwh, and that applies to car number 1 in the predbat config.

        # Car SoC increment
        if scheduled:
            for car_n in range(self.num_cars):
                if (car_n == 0) and self.car_charging_manual_soc:
                    self.log("Car charging Manual SoC current is {} next is {}".format(self.car_charging_soc[car_n], self.car_charging_soc_next[car_n]))
                    if self.car_charging_soc_next[car_n] is not None:
                        self.expose_config("car_charging_manual_soc_kwh", dp3(self.car_charging_soc_next[car_n]))

Can you swap the car configs around to see if this is the case? Do you not have a car SoC kWh for either of your EV's through the EV charger integration?

[ppmt]

I had noticed that there is only one car_charging_manual_soc_kwh but assume the code was taking care of that. May be not!

At the moment we go around the problem by doing what you suggest. We either swap around the config and then it works.

But obviously it would be easier if we didn't have to.
So it could be a "bug" then. I was hoping others would have 2 EVs and it was working for them.

My son is living with me at the moment and we both happened to need a newer car at more or less the same time and he decided to copy me :)

[gcoan]

Potentially I could try to change the code to recognise two manual car charging soc's as its a bit inconsistent to not have two when predbat allows more than one car charging rate, but you'd have to test it for me.

How have you got car_charging_exclusive setup, do you charge both cars at the same time or independently?

[ppmt]

I am more than willing to test anything you send me.

car_charging_exclusive is set to True for both cars. We can only charge one car at time

[gcoan]

opened issue #2937 to track further development