Car Charging Prediction not working correctly

[brettjenkins]

Describe the bug
I use octopus intelligent go with the zappi integration. I have setup predbat to know my cars state of charge and target charge. Predbat is assuming that every intelligent go slot the car will be charging at full rate even when the car will have charged up by then, which means that predbat will not export.

If the car isn't actively charging it then seems like it will mark every slot as car kwh '-'.

I've tried setting up car_charging_planned: and car_charging_planned_response: and while predbat seems to understand it (because the slots will only stay green and low rate if it's plugged in, if I change the regex so it doesn't match predbat will show the slots as normal rate) - the car kwh doesn't get populated. If I take this code out, the car kwh does get populated again.

I've set
switch.predbat_octopus_intelligent_ignore_unplugged to true
switch.predbat_octopus_intelligent_consider_full to true

Expected behaviour
Because predbat knows the car soc and the car target charge (note, not the octopus target charge) and it knows the rate of charge and the car battery kwh total, I would expect predbat to predict when the car will be done charging (in the same sort of way it can predict solar - unless I'm misunderstanding how this should work?)

Predbat version

v8.32.12

Environment details

Sigenergy 12kw inverter
2x sigenergy 9kwh batteries

Docker

Relevant Settings

  car_charging_energy: 're:(sensor.myenergi_zappi_[0-9a-z]+_charge_added_session|sensor.wallbox_portal_added_energy)'

  num_cars: 1
  car_charging_battery_size:
  - 76.0
  car_charging_soc:
  - sensor.millie_battery
  car_charging_limit:
  - number.millie_charge_limit

Screenshots

When the car isn't charging:

Log file

predbat(2).log

Predbat debug yaml file

predbat_debug2.yaml.txt

[brettjenkins]

Although the car is charging right now, and it's still showing '-' - it seems a bit random.

I've got a 2021 Long Range Model 3 - which according to https://ev-database.org/car/1525/Tesla-Model-3-Long-Range-AWD has a nominal capacity of 82.0 kWh, and a usable capacity of 76.0 kWh - so i've set the car_charging_battery_size to 76.

[brettjenkins]

I've fixed this now, I realised that when car_charging_limit and octopus_charge_limit are provided, octopus_charge_limit overrides the car_charging_limit. The fix was to comment out octopus_charge_limit and now it's predicting the car charge as expected.

[gcoan]

I've fixed this now, I realised that when car_charging_limit and octopus_charge_limit are provided, octopus_charge_limit overrides the car_charging_limit. The fix was to comment out octopus_charge_limit and now it's predicting the car charge as expected.

thanks, I will highlight this in the documentation