@hesselonline thanks.
Had anyone noted that the current charging power isn’t the same as the value in the wallbox app.
Hi, as I just got my EV yesterday, I’m still experimenting with the data. However, your post made me look into the charging_power value. It is indeed also 0 for me (although I’m currently charging at 10.9Kw). This seems to be something in the api, the python library used also reports 0 for me, and if I look in the basecode of this library it does little to modify data. Could also be car related maybe, state of charge is also not shown for me, are there others where this does work?
Congrats. Me too! Meaning got my Polestar yesterday.
The Wallbox worked fine immediately. Mine is only single phase 7.4 kW. The HA integration seems to work, that is it is showing that it is charging and enabling the pause button (did not try if it worked).
But:
- the SoC was not reported
- the charging power was incorrectly reported as 0.12 kW instead of 7 kW (-ish)
- the added energy was incorrectly reported as 0.05 kWh instead of 3.12 shown by the app
- the added range was incorrectly reported as 25 km
Thoughts:
- where does the SoC come from, the app does not show the SoC?
- The reported 0.05 kWh is in line with the reported 0.12 kW. The multiplier is close to 60. Somewhere a minutes vs. hours mistake? You see 0 for the power reading, or is that 10.9/60 rounded?
- where does it even get the added range, why does it think I can do 0.2 kWh/100 km? I wish! Or is that the same factor 60 off?
Hope this helps. Let me know if you want me to try something specific. Enjoy your car!!!
Thanks! Strange BTW, my charging power isn’t reported. However, the added range seems a reasonable number (175km currently). Charging time is way off for me, (2k minutes, my charger isn’t that slow ;-)).
I think that it depends on the car what data is shared with the Wallbox, that would explain these differences. Charging power is just a plain 0 for me if I access the API directly. Enjoy the Polestar!
The charging power that is reported is a fixed number. Rock solid throughout the charge. Independ from (a widely varying) mains voltage. That is defenitely not correct.
The charging time seems to reset when I start a charge, but not stop when it is finished. Do you see the same?
I tried the pause button. It works. So it should be possible to create a HA to schedule and even to control charging based on mains voltage. I live at the end of a thin wire with new houses with large solar installations and a few electric cars. The mains voltage exceeds 253 V when the sun is out and drops below 207 V in the early evening. Maybe I can help to stabilize that a bit.
Most interesting to get working now is SoC. What can I do to help?
I just pushed a slightly changed version to github (only sensor.py changed) → the idea here is that if you set the logging to debug level (Logger - Home Assistant) it will dump the full API response data in the log. Also, you should be able to read this data, it is in a key:value format.
Can you try this? I actually think (based on my own data) that the API response just doesn’t contain the right data. Furthermore, as our results differ, I think that this is due to what the car ‘sends’ to the wallbox.
Thanks. I’m just about to leave for a few days (taking the Polestar on a trip), so it will be next week before I can try.
@hesselonline first of all excellent work here. I have ordered an EV as well and even today I received a proposal to install a wallbox pulsar +. My question is, if your component will be compatible with the model I refer above. As you speak are you able via te component changing the charging current? I’m looking to be able to control for a slow/fast charge and mainly to pause/resume charging when I have solar power available.
I have updated my HA Wallbox integration installation (updated all files to make sure). I have also updated the charger to version 5.0.6.
The charging power now works. It varies with the mains voltage. The reading is correct.
The state of charge reading still only shows ‘Unknown’. This is the only reading the Wallbox MUST get from the car. It seems indeed that that communication is not implemented or is not working. Note that the Wallbox app does not show SoC either.
I have tried the logging:
#Logging
logger:
logs:
custom_components.wallbox: debug
but I can’t find anything useful in the logs. Not sure what I’m doing here.
Overview of the status on my end:
Is the Charging Power working for you now?
Hi, I think it works fine with that model, maybe others who use it with that model can confirm? You can set the charging current (amps) and pause/resume. Of course your car needs to support this also, I understood that the VW cars don’t resume charging after a long pause.
Ok, I will try the debugging option myself if I find the time. I put it together in an hurry last week, next charge I will see how it works on my end.
Cool thanks! If someone owns (Pulsar+) one please let me know. It will be a XC40 Recharge…the battery is really small only 10.7kw but want to be able to recharge with solar power only, so be able to pause and resume will be essential. As well dynamically adjust the charging…quick question thought I suppose we can change the Amps whenever we want? Or do I need to pause or restart the recharge cycle?
I have the Pulsar Plus and yes it works. You can change the current limit while charging, no need to pause.
I too am planning to do some automation with HA. In my case to stop charging when the mains voltage drops too low. I see voltages between 200V (early evening, no sun) and 265V (mid day, full sun). It is not the house connection, it is the under-dimensioned mains power line in the street.
I will do some experiments with HA automations on the charger and report back.
1 Like
I’m looking to add a second charger to my home; does this integration support multiple chargers?
Yes, rename the second charger when adding
@VdR appreciate your feedback, please do share when you have more details about your automations.
@hesselonline any updates on the official HA integration? Last comments was the HA crew was quite busy to review the code. Any update syou may share?
No progress, I made some changes as requested by the HA team, but the pull request is still open. I do understand that they are quite busy… However, so am I, and I am wondering if its worth the effort 
Maybe some of you guys could weigh in / show support by commenting op the PR: https://github.com/home-assistant/core/pull/48082
Totatlly understand and indeed it’s just a nice to have! The custom component works for me as well!
I’m a bit short of time, so I have not made much progress with automations.
I did wonder about the SoC reading and why we do not get a good reading and if that relates to the Wallbox app not showing SoC while charging. So I contact customer service through the app, for some reason I ended up sending a message to Wallbox in the US, and asked if it would be possible to add the SoC reading to the app. I received a bit of strange answer as if nobody had ever thought of this. Anyway see below. Surely if they would add the SoC reading we should be getting a good reading too.
Im pretty happy with the HA integration. The SoC reading would be icing on the cake.
Turns out I do not need to control the charge current to protect the mains voltage. The charger or the car seems to do that all on it’s own. See my dashboard (under development) below. The first charge part is up to the 70% limit set in the car, then I raised to 90% (for testing purposes). The charger goes into a pause state when there is no longer demand from the car, and kicks right back in when I raised to 90%. The car goes to sleep about five minutes after of reaching the demanded SoC. Then the charger current goes completely to zero. The car and charger play very well together.
